The Permian ( / ˈ p ɜːr m i . ə n / PUR -mee-ən ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period 298.9 million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the sixth and last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison , who named it after the region of Perm in Russia .
99-678: Bad Kissingen is a German spa town in the Bavarian region of Lower Franconia and seat of the district Bad Kissingen . Situated to the south of the Rhön Mountains on the Franconian Saale river , it is one of the health resorts, which became famous as a "Weltbad" in the 19th century. In 2021 the town became part of the transnational UNESCO World Heritage Site under the name " Great Spa Towns of Europe ", because of its famous mineral springs and its architecture exemplifying
198-697: A Prussian victory. Imperial Chancellor Otto von Bismarck visited Bad Kissingen's spas many times. In 1874, during the Kulturkampf , he survived an assassination attempt in the town by the Catholic Eduard Franz Ludwig Kullmann. In 1877, he dictated the Kissingen Dictation (German: Kissinger Diktat ), in which he explained the principles of his foreign policy. Bismarck's former home in Bad Kissingen
297-901: A century after its original naming, with the United States Geological Survey until 1941 considering the Permian a subsystem of the Carboniferous equivalent to the Mississippian and Pennsylvanian . The Permian Period is divided into three epochs , from oldest to youngest, the Cisuralian, Guadalupian, and Lopingian. Geologists divide the rocks of the Permian into a stratigraphic set of smaller units called stages , each formed during corresponding time intervals called ages. Stages can be defined globally or regionally. For global stratigraphic correlation,
396-630: A city in Perm Krai. The stage was introduced by Alexandr Antonovich Stukenberg in 1890. The Kungurian currently lacks a defined GSSP. Recent proposals have suggested the appearance of Neostreptognathodus pnevi as the lower boundary. The Guadalupian Series is named after the Guadalupe Mountains in Texas and New Mexico, where extensive marine sequences of this age are exposed. It was named by George Herbert Girty in 1902. The Roadian
495-630: A coal swamp community, has an upper canopy consisting of lycopsid tree Sigillaria , with a lower canopy consisting of Marattialean tree ferns, and Noeggerathiales. Early conifers appeared in the Late Carboniferous, represented by primitive walchian conifers, but were replaced with more derived voltzialeans during the Permian. Permian conifers were very similar morphologically to their modern counterparts, and were adapted to stressed dry or seasonally dry climatic conditions. The increasing aridity, especially at low latitudes, facilitated
594-541: A dramatic increase in diversification during the Early Permian. Towards the end of the Permian, there was a substantial drop in both origination and extinction rates. The dominant insects during the Permian Period were early representatives of Paleoptera , Polyneoptera , and Paraneoptera . Palaeodictyopteroidea , which had represented the dominant group of insects during the Carboniferous, declined during
693-681: A one-year interruption in 1945, the only closure in its history. Shortly prior to World War II Manteuffel Kaserne (Manteuffel barracks) was established at the eastern edge of the Bad Kissingen town center by the German military as part of Hitler's program to expand the German Wehrmacht . In 1945, the American army entered the town peacefully and took over the Kaserne, which was renamed Daley Barracks in 1953. The barracks were closed in
792-481: A peak of diversity in the Cisuralian, with a substantial decline during the Guadalupian-Lopingian following Olson's extinction, with the family diversity dropping below Carboniferous levels. Embolomeres , a group of aquatic crocodile-like limbed vertebrates that are reptilliomorphs under some phylogenies. They previously had their last records in the Cisuralian, are now known to have persisted into
891-525: A protective cover, over plants such as ferns that disperse spores in a wetter environment. The first modern trees ( conifers , ginkgos and cycads ) appeared in the Permian. Three general areas are especially noted for their extensive Permian deposits—the Ural Mountains (where Perm itself is located), China, and the southwest of North America, including the Texas red beds. The Permian Basin in
990-732: A spa town. Spa towns in South Africa include: Spa towns in Spain include: Taiwan is home to a number of towns and cities with tourism infrastructure centered on hot springs. These include: There are several spa towns in Turkey . The most famous of these is Pamukkale, Denizli where the Pamukkale thermal springs are located. Some but not all UK spa towns contain "Spa", "Wells", or "Bath" in their names, e.g., Matlock Bath . Some towns are designated Spa Heritage Towns. Two out of four of
1089-448: Is a renaissance architecture design from 1577. The town hall of today is the former mansion of the noble family von Heußlein, built by Johann Dientzenhofer in 1706. Between 1838 and 1913, the arcade ( Arkadenbau ) was built around the spa garden by Friedrich von Gärtner , as well as the halls for the use of the mineral water ("Brunnenhalle") and for promenades ("Wandelhalle"), following a design by Max Littmann . Littmann also designed
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#17327935083401188-642: Is a global hiatus in the terrestrial fossil record during the late Kungurian and early Roadian , referred to as "Olson's Gap" that obscures the nature of the transition. Other proposals have suggested that the North American and Russian records overlap, with the latest terrestrial North American deposition occurring during the Roadian, suggesting that there was an extinction event, dubbed " Olson's Extinction ". The Middle Permian faunas of South Africa and Russia are dominated by therapsids, most abundantly by
1287-663: Is defined by the first appearance of the conodont Jinogondolella aserrata. The Capitanian is named after the Capitan Reef in the Guadalupe Mountains of Texas, named by George Burr Richardson in 1904, and first used in a chronostratigraphic sense by Glenister and Furnish in 1961 as a substage of the Guadalupian Stage. The Capitanian was ratified as an international stage by the ICS in 2001. The GSSP for
1386-686: Is known for its more than 500 mineral springs, including the hottest spring in the Balkans at Sapareva Banya - 103 °C. Other famous spa towns include Sandanski , Hisarya , Bankya , Devin , Kyustendil , Varshets , Velingrad . In Bulgarian , the word for a spa is баня (transliterated banya ). Harrison Hot Springs is one of the oldest among 18 in British Columbia; there are also two in Alberta and one in Ontario. In Croatia ,
1485-595: Is now the Bismarck Museum. In June 1911 Alfred von Kiderlen-Waechter , German Secretary of State, and the French ambassador Jules Cambon had negotiations in Bad Kissingen about Morocco without achieving a solution. The failure of the negotiations led to the Agadir Crisis . The resort's clientele changed in the 20th century, with ordinary people increasingly replacing nobility as guests. The spa suffered
1584-638: Is rich in thermal waters with health benefits, and many spa towns are popular tourist destinations. Budapest has several spas , including Turkish style spas dating back to the 16th century. Eger also has a Turkish spa. Other famous spas include the ones at Hévíz , Harkány , Bük , Hajdúszoboszló , Gyula , Bogács , Bükkszék , Zalakaros , the Cave Bath at Miskolctapolca and the Zsóry-fürdő at Mezőkövesd . In Italy , spa towns, called città termale (from Latin thermae ), are very numerous all over
1683-514: Is the largest spa town in Germany. The most popular spa towns in Greece are Aidipsos , Agkistro, Serres , Loutraki , Kamena Vourla , Kimolos , Loutra Kyllinis , Sidirokastro, Serres , Lakkos Milos , Loutrochori, Aridaia, Pella (Pozar) In Hungary , the word fürdő or the more archaic füred ("bath"), fürdőváros ("spa town") or fürdőhely ("bathing place") implies a spa town. Hungary
1782-452: Is thought to have existed during the Early Permian. Though the fossil record is fragmentary, lungfish appear to have undergone an evolutionary diversification and size increase in freshwater habitats during the Early Permian, but subsequently declined during the middle and late Permian. Conodonts experienced their lowest diversity of their entire evolutionary history during the Permian. Permian chondrichthyan faunas are poorly known. Members of
1881-666: The Kurtheater Bad Kissingen , completed in 1905, and the concert hall Regentenbau , inaugurated in 1913. The train station building was designed and supervised by Friedrich Bürklein . The Bad Kissingen Train station was constructed between 1871 and 1874. Other architectural attractions in Bad Kissingen include: During the World Cup 2006, Bad Kissingen was home to the Ecuador national team (the Croatia team
1980-663: The Central Highlands of Victoria . Most are in and around Daylesford and Hepburn Springs . Daylesford and Hepburn Springs call themselves "Spa Country" and the "Spa Centre of Australia". In Queensland , many towns have mineral springs created by artesian bores into the Great Artesian Basin , often the only or primary water supply to the towns. Some of these towns had periods of popularity as spa towns, including Ararmac , Barcaldine , Dalby , Helidon , Innot Hot Springs , and Muckadilla , mostly in
2079-599: The International Commission on Stratigraphy (ICS) ratify global stages based on a Global Boundary Stratotype Section and Point (GSSP) from a single formation (a stratotype ) identifying the lower boundary of the stage. The ages of the Permian, from youngest to oldest, are: For most of the 20th century, the Permian was divided into the Early and Late Permian, with the Kungurian being the last stage of
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#17327935083402178-726: The North China Craton , the South China Block and Indochina fused to each other and Pangea by the end of the Permian. The Zechstein Sea , a hypersaline epicontinental sea , existed in what is now northwestern Europe. Large continental landmass interiors experience climates with extreme variations of heat and cold (" continental climate ") and monsoon conditions with highly seasonal rainfall patterns. Deserts seem to have been widespread on Pangaea. Such dry conditions favored gymnosperms , plants with seeds enclosed in
2277-704: The Paleo-Tethys Ocean , a large ocean that existed between Asia and Gondwana. The Cimmeria continent rifted away from Gondwana and drifted north to Laurasia , causing the Paleo-Tethys Ocean to shrink. A new ocean was growing on its southern end, the Neotethys Ocean , an ocean that would dominate much of the Mesozoic Era. A magmatic arc, containing Hainan on its southwesternmost end, began to form as Panthalassa subducted under
2376-601: The Sydney Basin , and palaeoclimatic models of the Earth's climate based on the behaviour of modern weather patterns showing that such a megamonsoon would occur given the continental arrangement of the Permian. The aforementioned increasing equatorial aridity was likely driven by the development and intensification of this Pangaean megamonsoon. Permian marine deposits are rich in fossil mollusks , brachiopods , and echinoderms . Brachiopods were highly diverse during
2475-447: The U.S. states of Texas and New Mexico is so named because it has one of the thickest deposits of Permian rocks in the world. Sea levels dropped slightly during the earliest Permian (Asselian). The sea level was stable at several tens of metres above present during the Early Permian, but there was a sharp drop beginning during the Roadian, culminating in the lowest sea level of the entire Palaeozoic at around present sea level during
2574-399: The Ural Mountains in the years 1840 and 1841. Murchison identified "vast series of beds of marl , schist , limestone , sandstone and conglomerate" that succeeded Carboniferous strata in the region. Murchison, in collaboration with Russian geologists, named the period after the surrounding Russian region of Perm, which takes its name from the medieval kingdom of Permia that occupied
2673-577: The pseudosuchians , dinosaurs , and pterosaurs in the following Triassic, first appeared and diversified during the Late Permian, including the first appearance of the Archosauriformes during the latest Permian. Cynodonts , the group of therapsids ancestral to modern mammals , first appeared and gained a worldwide distribution during the Late Permian. Another group of therapsids, the therocephalians (such as Lycosuchus ), arose in
2772-544: The 'Bad' on Kissingen in 1883, were among the guests of the spa at this time. Other well-known visitors to the resort included author Leo Tolstoy , composer Gioachino Rossini and artist Adolph von Menzel . On 10 July 1866, during the Mainfeldzug (campaign at the river Main ) of the Austro-Prussian War , Kissingen was the site of fierce battle between Bavarian and Prussian troops, which ended with
2871-476: The 14th century. Kissingen was first mentioned as "oppidum" (town) in 1279. The town developed into a spa in the 1500s and recorded its first official spa guest in 1520. In 1814, Kissingen became part of Bavaria . The town grew to be a fashionable resort in the 19th century, and was extended during the reign of Ludwig I of Bavaria . Crowned heads of state such as Empress Elisabeth of Austria , Tsar Alexander II of Russia and King Ludwig II of Bavaria , who bestowed
2970-533: The 1990s after the fall of the Iron Curtain when the American troops were withdrawn. After the war, the Department of Social Security built clinics in the town. A change in health legislation in the 1990s reduced the opportunities for German health insurance contracts to fund spa visits, which led to job losses. As a result, efforts were made to attract a new kind of clientele, helped in no small part by
3069-605: The Asselian, Sakmarian, and Artinskian stages. The Kungurian was later added to conform to the Russian "Lower Permian". Albert Auguste Cochon de Lapparent in 1900 had proposed the "Uralian Series", but the subsequent inconsistent usage of this term meant that it was later abandoned. The Asselian was named by the Russian stratigrapher V.E. Ruzhenchev in 1954, after the Assel River in the southern Ural Mountains. The GSSP for
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3168-414: The Carboniferous. Pangaea was surrounded by the superocean Panthalassa . The Carboniferous rainforest collapse left behind vast regions of desert within the continental interior. Amniotes, which could better cope with these drier conditions, rose to dominance in place of their amphibian ancestors. Various authors recognise at least three, and possibly four extinction events in the Permian. The end of
3267-691: The Cisuralian. Another cool period began around the middle Capitanian. This cool period, lasting for 3-4 Myr, was known as the Kamura Event. It was interrupted by the Emeishan Thermal Excursion in the late part of the Capitanian, around 260 million years ago, corresponding to the eruption of the Emeishan Traps . This interval of rapid climate change was responsible for the Capitanian mass extinction event. During
3366-450: The Cisuralian. Permian synapsids included some large members such as Dimetrodon . The special adaptations of synapsids enabled them to flourish in the drier climate of the Permian and they grew to dominate the vertebrates. A faunal turnover occurred around the transition between the Cisuralian and Guadalupian, with the decline of amphibians and the replacement of pelycosaurs (a paraphyletic group) with more advanced therapsids , although
3465-805: The EMNID survey which named Bad Kissingen Germany's best-known spa town. In 2015, about 1.5 million overnight stays of more than 238,000 visitors were registered in the town. With the opening of the KissSalis Therme in February 2004, Bad Kissingen gained a spa leisure centre and, in December 2004, the German-Chinese Football Academy was opened in the town, where the Chinese "08 Star Team" lived and trained in preparation for
3564-500: The Early Permian Chemnitz petrified forest of Germany demonstrates that they had complex branching patterns similar to modern angiosperm trees. By the Late Permian, high thin forests had become widespread across the globe, as evidenced by the global distribution of weigeltisaurids. The oldest likely record of Ginkgoales (the group containing Ginkgo and its close relatives) is Trichopitys heteromorpha from
3663-640: The Early Permian ( Cisuralian ) saw a major faunal turnover, with most lineages of primitive " pelycosaur " synapsids becoming extinct, being replaced by more advanced therapsids . The end of the Capitanian Stage of the Permian was marked by the major Capitanian mass extinction event , associated with the eruption of the Emeishan Traps . The Permian (along with the Paleozoic) ended with the Permian–Triassic extinction event (colloquially known as
3762-599: The Early Permian. Glenister and colleagues in 1992 proposed a tripartite scheme, advocating that the Roadian-Capitanian was distinct from the rest of the Late Permian, and should be regarded as a separate epoch. The tripartite split was adopted after a formal proposal by Glenister et al. (1999). Historically, most marine biostratigraphy of the Permian was based on ammonoids ; however, ammonoid localities are rare in Permian stratigraphic sections, and species characterise relatively long periods of time. All GSSPs for
3861-568: The Early Triassic, but a Permian origin is suspected. The diversity of coelacanths is relatively low throughout the Permian in comparison to other marine fishes, though there is an increase in diversity during the terminal Permian (Changhsingian), corresponding with the highest diversity in their evolutionary history during the Early Triassic. Diversity of freshwater fish faunas was generally low and dominated by lungfish and "Paleopterygians". The last common ancestor of all living lungfish
3960-491: The English towns granted the title "Royal", Royal Leamington Spa and Royal Tunbridge Wells , are spa towns. Terms used in various countries: Permian The Permian witnessed the diversification of the two groups of amniotes , the synapsids and the sauropsids ( reptiles ). The world at the time was dominated by the supercontinent Pangaea , which had formed due to the collision of Euramerica and Gondwana during
4059-652: The Great Dying), the largest mass extinction in Earth's history (which is the last of the three or four crises that occurred in the Permian), in which nearly 81% of marine species and 70% of terrestrial species died out, associated with the eruption of the Siberian Traps . It took well into the Triassic for life to recover from this catastrophe; on land, ecosystems took 30 million years to recover. Prior to
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4158-551: The Helidon Spa falling into disuse by 1994. Many towns in Queensland continue to provide bathing facilities fed by hot springs, but these are promoted as relaxing holiday activities rather than as medical treatments. Brazil has a growing number of spa towns. The traditional ones are: Águas de Lindoia , Serra Negra , Águas de São Pedro , Caxambu , Poços de Caldas , Caldas Novas , Araxá , and São Lourenço . Bulgaria
4257-472: The Late Permian. Members of the modern orders Archostemata and Adephaga are known from the Late Permian. Complex wood boring traces found in the Late Permian of China suggest that members of Polyphaga , the most diverse group of modern beetles, were also present by the Late Permian. The terrestrial fossil record of the Permian is patchy and temporally discontinuous. Early Permian records are dominated by equatorial Europe and North America, while those of
4356-617: The Late Permian. By the Changhsingian, only a handful (4-6) genera remained. Corals exhibited a decline in diversity over the course of the Middle and Late Permian. Terrestrial life in the Permian included diverse plants, fungi , arthropods , and various types of tetrapods . The period saw a massive desert covering the interior of Pangaea . The warm zone spread in the northern hemisphere, where extensive dry desert appeared. The rocks formed at that time were stained red by iron oxides,
4455-623: The Lopingian in China. Modern amphibians ( lissamphibians ) are suggested to have originated during Permian, descending from a lineage of dissorophoid temnospondyls or lepospondyls . The diversity of fish during the Permian is relatively low compared to the following Triassic. The dominant group of bony fishes during the Permian were the " Paleopterygii " a paraphyletic grouping of Actinopterygii that lie outside of Neopterygii . The earliest unequivocal members of Neopterygii appear during
4554-418: The Lopingian series. The GSSP for the base of the Wuchiapingian is located at Penglaitan, Guangxi , China and was ratified in 2004. The boundary is defined by the first appearance of Clarkina postbitteri postbitteri The Changhsingian was originally derived from the Changxing Limestone, a geological unit first named by the Grabau in 1923, ultimately deriving from Changxing County , Zhejiang .The GSSP for
4653-408: The Lopingian to a series, including all Permian deposits in South China that overlie the Maokou Limestone. In 1995, a vote by the Subcommission on Permian Stratigraphy of the ICS adopted the Lopingian as an international standard chronostratigraphic unit. The Wuchiapinginan and Changhsingian were first introduced in 1962, by J. Z. Sheng as the "Wuchiaping Formation" and "Changhsing Formation" within
4752-450: The Middle Permian. There were no flying vertebrates, though the extinct lizard-like reptile family Weigeltisauridae from the Late Permian had extendable wings like modern gliding lizards , and are the oldest known gliding vertebrates. Permian stem-amniotes consisted of lepospondyli and batrachosaurs , according to some phylogenies; according to others, stem-amniotes are represented only by diadectomorphs . Temnospondyls reached
4851-547: The Middle and Late Permian are dominated by temperate Karoo Supergroup sediments of South Africa and the Ural region of European Russia. Early Permian terrestrial faunas of North America and Europe were dominated by primitive pelycosaur synapsids including the herbivorous edaphosaurids , and carnivorous sphenacodontids , diadectids and amphibians . Early Permian reptiles, such as acleistorhinids , were mostly small insectivores. Synapsids (the group that would later include mammals) thrived and diversified greatly during
4950-410: The Ochoan, corresponding to the Lopingian. During the Permian, all the Earth 's major landmasses were collected into a single supercontinent known as Pangaea , with the microcontinental terranes of Cathaysia to the east. Pangaea straddled the equator and extended toward the poles, with a corresponding effect on ocean currents in the single great ocean (" Panthalassa ", the "universal sea"), and
5049-505: The Olympic Games in Beijing in 2008. There are 7 mineral springs in Bad Kissingen, all of which are still used today. All but the Schönborn spring are cold, containing high levels of sodium, carbonates, and sulphates. The springs are located in the Kissingen-Haßfurt fault zone, absorbing minerals from Permian -era sediment layers. Bad Kissingen was one of the leading spas in the 19th and early 20th century, which in German are called "Weltbad". They differ from other spa resorts mainly through
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#17327935083405148-444: The Permian are based around the first appearance datum of specific species of conodont , an enigmatic group of jawless chordates with hard tooth-like oral elements. Conodonts are used as index fossils for most of the Palaeozoic and the Triassic. The Cisuralian Series is named after the strata exposed on the western slopes of the Ural Mountains in Russia and Kazakhstan. The name was proposed by J. B. Waterhouse in 1982 to comprise
5247-582: The Permian, representing up to a third of all insects at some localities. Mecoptera (sometimes known as scorpionflies) first appeared during the Early Permian, going on to become diverse during the Late Permian. Some Permian mecopterans, like Mesopsychidae have long proboscis that suggest they may have pollinated gymnosperms. The earliest known beetles appeared at the beginning of the Permian. Early beetles such as members of Permocupedidae were likely xylophagous , feeding on decaying wood. Several lineages such as Schizophoridae expanded into aquatic habitats by
5346-473: The Permian-Triassic boundary, corresponding to the eruption of the Siberian Traps , which released more than 5 teratonnes of CO 2 , more than doubling the atmospheric carbon dioxide concentration. A -2% δ O excursion signifies the extreme magnitude of this climatic shift. This extremely rapid interval of greenhouse gas release caused the Permian-Triassic mass extinction, as well as ushering in an extreme hothouse that persisted for several million years into
5445-454: The Permian. Xenacanthiformes , another extinct group of shark-like chondrichthyans, were common in freshwater habitats, and represented the apex predators of freshwater ecosystems. Four floristic provinces in the Permian are recognised, the Angaran , Euramerican, Gondwanan, and Cathaysian realms. The Carboniferous Rainforest Collapse would result in the replacement of lycopsid -dominated forests with tree-fern dominated ones during
5544-456: The Permian. The extinct order Productida was the predominant group of Permian brachiopods, accounting for up to about half of all Permian brachiopod genera. Brachiopods also served as important ecosystem engineers in Permian reef complexes. Amongst ammonoids , Goniatitida were a major group during the Early-Mid Permian, but declined during the Late Permian. Members of the order Prolecanitida were less diverse. The Ceratitida originated from
5643-515: The Permian. This is likely due to competition by Hemiptera , due to their similar mouthparts and therefore ecology. Primitive relatives of damselflies and dragonflies ( Meganisoptera ), which include the largest flying insects of all time, also declined during the Permian. Holometabola , the largest group of modern insects, also diversified during this time. " Grylloblattidans ", an extinct group of winged insects thought to be related to modern ice crawlers , reached their apex of diversity during
5742-475: The Usolka section in the southern Urals, which was ratified in 2018. The GSSP is defined by the first appearance of Sweetognathus binodosus . The Artinskian was named after the city of Arti in Sverdlovsk Oblast , Russia. It was named by Karpinsky in 1874. The Artinskian currently lacks a defined GSSP. The proposed definition for the base of the Artinskian is the first appearance of Sweetognathus aff. S. whitei. The Kungurian takes its name after Kungur ,
5841-401: The Word Formation by Johan August Udden in 1916, Glenister and Furnish in 1961 was the first publication to use it as a chronostratigraphic term as a substage of the Guadalupian Stage. The GSSP for the base of the Wordian is located in Guadalupe Pass, Texas, within the sediments of the Getaway Limestone Member of the Cherry Canyon Formation , which was ratified in 2001. The base of the Wordian
5940-413: The Wuchiapingian, followed by a slight rise during the Changhsingian. The Permian was cool in comparison to most other geologic time periods, with modest pole to Equator temperature gradients. At the start of the Permian, the Earth was still in the Late Paleozoic icehouse (LPIA), which began in the latest Devonian and spanned the entire Carboniferous period, with its most intense phase occurring during
6039-418: The affix). Portugal is well known by famous spa towns throughout of the country. Due to its high quality, as well as the landscape where are located, the most important ones are: In Romania , the word Băile implies a spa town. The most famous spa towns in Romania are Băile Herculane , Băile Felix , Mangalia , Covasna , Călimănești & Borsec . Serbia is known for its many spa cities. Some of
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#17327935083406138-506: The amount of lava estimated to have been produced during this period, the worst-case scenario is the release of enough carbon dioxide from the eruptions to raise world temperatures five degrees Celsius. Another hypothesis involves ocean venting of hydrogen sulfide gas. Portions of the deep ocean will periodically lose all of its dissolved oxygen allowing bacteria that live without oxygen to flourish and produce hydrogen sulfide gas. If enough hydrogen sulfide accumulates in an anoxic zone ,
6237-411: The ancestors of many present-day families. Rich forests were present in many areas, with a diverse mix of plant groups. The southern continent saw extensive seed fern forests of the Glossopteris flora. Oxygen levels were probably high there. The ginkgos and cycads also appeared during this period. Insects, which had first appeared and become abundant during the preceding Carboniferous, experienced
6336-405: The base of the Asselian is located in the Aidaralash River valley near Aqtöbe , Kazakhstan, which was ratified in 1996. The beginning of the stage is defined by the first appearance of Streptognathodus postfusus . The Sakmarian is named in reference to the Sakmara River in the southern Urals, and was coined by Alexander Karpinsky in 1874. The GSSP for the base of the Sakmarian is located at
6435-418: The base of the Capitanian is located at Nipple Hill in the southeast Guadalupe Mountains of Texas, and was ratified in 2001, the beginning of the stage is defined by the first appearance of Jinogondolella postserrata. The Lopingian was first introduced by Amadeus William Grabau in 1923 as the "Loping Series" after Leping , Jiangxi , China. Originally used as a lithostraphic unit, T.K. Huang in 1932 raised
6534-404: The base of the Changhsingian is located 88 cm above the base of the Changxing Limestone in the Meishan D section, Zhejiang, China and was ratified in 2005, the boundary is defined by the first appearance of Clarkina wangi. The GSSP for the base of the Triassic is located at the base of Bed 27c at the Meishan D section, and was ratified in 2001. The GSSP is defined by the first appearance of
6633-684: The best known springs are the Vrnjačka Banja , Bukovička Banja , Vrujci , Sokobanja and Niška Banja . The hottest spring in Serbia is at Vranjska Banja (96°C) In Serbia, the word Banja implies a spa town. Slovakia is well known by its spa towns. The most famous is the city of Piešťany in Trnava Region . Other notable spa towns in Slovakia include: Spa towns in Slovenia include Rogaška Slatina , Radenci , Čatež ob Savi , Dobrna , Dolenjske Toplice, Šmarješke Toplice, Moravske Toplice , Rimske Toplice , Laško and Topolšica . They offer accommodation in hotels, apartments, bungalows, and camp sites. The Slovenian words terme or toplice imply
6732-429: The chondrichthyan clade Holocephali , which contains living chimaeras , reached their apex of diversity during the Carboniferous-Permian, the most famous Permian representative being the "buzz-saw shark" Helicoprion , known for its unusual spiral shaped spiral tooth whorl in the lower jaw. Hybodonts , a group of shark-like chondrichthyans, were widespread and abundant members of marine and freshwater faunas throughout
6831-449: The climate became notably more arid at the end of the Carboniferous and beginning of the Permian. Nonetheless, temperatures continued to cool during most of the Asselian and Sakmarian, during which the LPIA peaked. By 287 million years ago, temperatures warmed and the South Pole ice cap retreated in what was known as the Artinskian Warming Event (AWE), though glaciers remained present in the uplands of eastern Australia, and perhaps also
6930-399: The conodont Hindeodus parvus . The Russian Tatarian Stage includes the Lopingian, Capitanian and part of the Wordian, while the underlying Kazanian includes the rest of the Wordian as well as the Roadian. In North America, the Permian is divided into the Wolfcampian (which includes the Nealian and the Lenoxian stages); the Leonardian (Hessian and Cathedralian stages); the Guadalupian; and
7029-434: The continental interior by the more advanced seed ferns and early conifers as a result of the Carboniferous rainforest collapse . At the close of the Permian, lycopod and equisete swamps reminiscent of Carboniferous flora survived only in Cathaysia , a series of equatorial islands in the Paleo-Tethys Ocean that later would become South China . The Permian saw the radiation of many important conifer groups, including
7128-630: The country because of the intense geological activity of the territory. These places were known and used since the Roman age. Most spa towns in Poland are located in the Lesser Poland and Lower Silesian Voivodeships. Some of them have an affix " Zdrój " in their name (written with hyphen or separately), meaning "water spring", to denote their spa status, but this is not a general rule (e.g. Ciechocinek and Inowrocław are spa towns, but do not use
7227-686: The decline of early synapsid clades was apparently a slow event that lasted about 20 Ma, from the Sakmarian to the end of the Kungurian . Predator-prey interactions among terrestrial synapsids became more dynamic. If terrestrial deposition ended around the end of the Cisuralian in North America and began in Russia during the early Guadalupian, a continuous record of the transition is not preserved. Uncertain dating has led to suggestions that there
7326-534: The diverse Dinocephalia . Dinocephalians become extinct at the end of the Middle Permian, during the Capitanian mass extinction event . Late Permian faunas are dominated by advanced therapsids such as the predatory sabertoothed gorgonopsians and herbivorous beaked dicynodonts , alongside large herbivorous pareiasaur parareptiles . The Archosauromorpha , the group of reptiles that would give rise to
7425-465: The earliest Permian of France. The oldest known fossils definitively assignable to modern cycads are known from the Late Permian. In Cathaysia, where a wet tropical frost-free climate prevailed, the Noeggerathiales , an extinct group of tree fern-like progymnosperms were a common component of the flora The earliest Permian (~ 298 million years ago) Cathyasian Wuda Tuff flora, representing
7524-573: The early Wuchiapingian, following the emplacement of the Emeishan Traps, global temperatures declined as carbon dioxide was weathered out of the atmosphere by the large igneous province's emplaced basalts. The late Wuchiapingian saw the finale of the Late Palaeozoic Ice Age, when the last Australian glaciers melted. The end of the Permian is marked by a temperature excursion, much larger than the Emeishan Thermal Excursion, at
7623-431: The end of the Permian. Nautiloids , a subclass of cephalopods, surprisingly survived this occurrence. There is evidence that magma , in the form of flood basalt , poured onto the Earth's surface in what is now called the Siberian Traps , for thousands of years, contributing to the environmental stress that led to mass extinction. The reduced coastal habitat and highly increased aridity probably also contributed. Based on
7722-580: The family Daraelitidae within Prolecanitida during the mid-Permian, and extensively diversified during the Late Permian. Only three families of trilobite are known from the Permian, Proetidae , Brachymetopidae and Phillipsiidae . Diversity, origination and extinction rates during the Early Permian were low. Trilobites underwent a diversification during the Kungurian-Wordian, the last in their evolutionary history, before declining during
7821-591: The following criteria: In addition to the main town of Bad Kissingen, its districts include (with population numbers given in brackets, as of 1 January 2011): The Council of Bad Kissingen (2020–2026), elected on 15 March 2020: In May 2020, three members of the CSU changed to DBK. Since then, the CSU has had 6 members in the town council, the DBK seven. Bad Kissingen is twinned with: The Botenlauben Castle Ruins from 1180 overlooks Bad Kissingen from above. The old town hall
7920-429: The gas can rise into the atmosphere. Oxidizing gases in the atmosphere would destroy the toxic gas, but the hydrogen sulfide would soon consume all of the atmospheric gas available. Hydrogen sulfide levels might have increased dramatically over a few hundred years. Models of such an event indicate that the gas would destroy ozone in the upper atmosphere allowing ultraviolet radiation to kill off species that had survived
8019-531: The hot mineral waters there and in 1676 wrote A discourse of Bathe, and the hot waters there. Also, Some Enquiries into the Nature of the water . This brought the purported health-giving properties of the waters to the attention of the aristocracy, who started to partake in them soon after. The term spa is used for towns or resorts offering hydrotherapy , which can include cold water or mineral water treatments and geothermal baths. There are mineral springs in
8118-666: The introduction of the term Permian , rocks of equivalent age in Germany had been named the Rotliegend and Zechstein , and in Great Britain as the New Red Sandstone . The term Permian was introduced into geology in 1841 by Sir Roderick Impey Murchison , president of the Geological Society of London , after extensive Russian explorations undertaken with Édouard de Verneuil in the vicinity of
8217-448: The late 1800s and early 1900s when mineral spas were believed to cure various medical conditions. However, the remote locations of most of these towns made them expensive to visit and only small-scale spa facilities developed there. Helidon, a day trip from Brisbane by car, was more successful, particularly with growing owernship of cars after World War II . However, concerns about radioactivity and bacterial contamination resulted in
8316-748: The late Carboniferous in Euramerica, and result in the differentiation of the Cathaysian floras from those of Euramerica. The Gondwanan floristic region was dominated by Glossopteridales , a group of woody gymnosperm plants, for most of the Permian, extending to high southern latitudes. The ecology of the most prominent glossopterid, Glossopteris , has been compared to that of bald cypress , living in mires with waterlogged soils. The tree-like calamites , distant relatives of modern horsetails , lived in coal swamps and grew in bamboo -like vertical thickets. A mostly complete specimen of Arthropitys from
8415-664: The latter part of the Pennsylvanian epoch. A significant trend of increasing aridification can be observed over the course of the Cisuralian. Early Permian aridification was most notable in Pangaean localities at near-equatorial latitudes. Sea levels also rose notably in the Early Permian as the LPIA slowly waned. At the Carboniferous-Permian boundary, a warming event occurred. In addition to becoming warmer,
8514-514: The most extensive extinction event recorded in paleontology : the Permian–Triassic extinction event . 90 to 95% of marine species became extinct , as well as 70% of all land organisms. It is also the only known mass extinction of insects. Recovery from the Permian–Triassic extinction event was protracted; on land, ecosystems took 30 million years to recover. Trilobites , which had thrived since Cambrian times, finally became extinct before
8613-473: The most potent greenhouse gases ) into the atmosphere to raise world temperatures an additional five degrees Celsius. The frozen methane hypothesis helps explain the increase in carbon-12 levels found midway in the Permian–Triassic boundary layer. It also helps explain why the first phase of the layer's extinctions was land-based, the second was marine-based (and starting right after the increase in C-12 levels), and
8712-414: The mountainous regions of far northern Siberia. Southern Africa also retained glaciers during the late Cisuralian in upland environments. The AWE also witnessed aridification of a particularly great magnitude. In the late Kungurian, cooling resumed, resulting in a cool glacial interval that lasted into the early Capitanian, though average temperatures were still much higher than during the beginning of
8811-713: The next geologic epoch, the Triassic. The Permian climate was also extremely seasonal and characterised by megamonsoons , which produced high aridity and extreme seasonality in Pangaea's interiors. Precipitation along the western margins of the Palaeo-Tethys Ocean was very high. Evidence for the megamonsoon includes the presence of megamonsoonal rainforests in the Qiangtang Basin of Tibet, enormous seasonal variation in sedimentation, bioturbation, and ichnofossil deposition recorded in sedimentary facies in
8910-507: The popularity of spa resorts in Europe during the 18th through 20th centuries. The town was first documented in the year 801 under the name chizzicha and was renowned above all for its mineral springs, which are recorded from as early as 823. At that time, Kissingen was under the domination of Fulda Abbey , later it fell to the Counts of Henneberg and was sold to the bishops of Würzburg in
9009-439: The result of intense heating by the sun of a surface devoid of vegetation cover. A number of older types of plants and animals died out or became marginal elements. The Permian began with the Carboniferous flora still flourishing. About the middle of the Permian a major transition in vegetation began. The swamp -loving lycopod trees of the Carboniferous, such as Lepidodendron and Sigillaria , were progressively replaced in
9108-587: The same area hundreds of years prior, and which is now located in the Perm Krai administrative region. Between 1853 and 1867, Jules Marcou recognised Permian strata in a large area of North America from the Mississippi River to the Colorado River and proposed the name Dyassic , from Dyas and Trias , though Murchison rejected this in 1871. The Permian system was controversial for over
9207-408: The southeastern South China. The Central Pangean Mountains , which began forming due to the collision of Laurasia and Gondwana during the Carboniferous, reached their maximum height during the early Permian around 295 million years ago, comparable to the present Himalayas , but became heavily eroded as the Permian progressed. The Kazakhstania block collided with Baltica during the Cisuralian, while
9306-532: The spread of conifers and their increasing prevalence throughout terrestrial ecosystems. Bennettitales , which would go on to become in widespread the Mesozoic, first appeared during the Cisuralian in China. Lyginopterids , which had declined in the late Pennsylvanian and subsequently have a patchy fossil record, survived into the Late Permian in Cathaysia and equatorial east Gondwana. The Permian ended with
9405-413: The toxic gas. There are species that can metabolize hydrogen sulfide. Another hypothesis builds on the flood basalt eruption theory. An increase in temperature of five degrees Celsius would not be enough to explain the death of 95% of life. But such warming could slowly raise ocean temperatures until frozen methane reservoirs below the ocean floor near coastlines melted, expelling enough methane (among
9504-937: The word Toplice implies a spa town. The most famous spa towns in Croatia are Daruvar , Šibenik and Sisak . In Czech , the word Lázně implies a spa town. The most famous spa towns in Czech Republic are the West Bohemian Spa Triangle of Karlovy Vary , Františkovy Lázně and Mariánské Lázně , listed on UNESCO World Heritage Site . Other important spas are Luhačovice , Teplice , Jáchymov , Konstantinovy Lázně , Jeseník , Třeboň , Poděbrady , Bechyně or Velké Losiny . Traditionally, Hanko , Rauma and Kalajoki have been considered spa towns. Today there are more than 50 spas ( kylpylä ) in Finland; some towns known for their spa centers include Ikaalinen , Naantali and Imatra . In France ,
9603-950: The words bains , thermes and eaux in city names often imply a spa town. There are more than 50 spa towns in France, including Vichy , Aix-les-Bains , Bagnoles-de-l'Orne , Dax , and Enghien-les-Bains . Borjomi is one such example in south Georgia. In Germany , the word Bad implies a spa town. Among the many famous spa towns in Germany are Bad Aachen , Baden-Baden , Bad Brückenau , Bad Ems , Bad Homburg , Bad Honnef , Bad Kissingen , Bad Kreuznach , Bad Mergentheim , Bad Muskau , Bad Oeynhausen , Bad Pyrmont , Bad Reichenhall , Bad Saarow , Bad Schandau , Bad Schönborn , Bad Segeberg , Bad Soden , Bad Tölz , Bad Wildbad , Bad Wimpfen , Bad Wildstein , Berchtesgaden , Binz , Freudenstadt , Heiligendamm , Heringsdorf , Kampen , Königstein , Radebeul , Schwangau , St. Blasien , Titisee , Tegernsee , Travemünde and Zingst . Wiesbaden
9702-474: Was in Bad Brückenau ). Sports facilities and infrastructure were upgraded for the team. Spa town A spa town is a resort town based on a mineral spa (a developed mineral spring ). Patrons visit spas to "take the waters" for their purported health benefits. Thomas Guidott set up a medical practice in the English town of Bath in 1668. He became interested in the curative properties of
9801-667: Was named in 1968 in reference to the Road Canyon Member of the Word Formation in Texas. The GSSP for the base of the Roadian is located 42.7m above the base of the Cutoff Formation in Stratotype Canyon, Guadalupe Mountains, Texas, and was ratified in 2001. The beginning of the stage is defined by the first appearance of Jinogondolella nankingensis . The Wordian was named in reference to
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