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25-765: Weald Clay or the Weald Clay Formation is a Lower Cretaceous sedimentary rock unit underlying areas of South East England , between the North and South Downs , in an area called the Weald Basin . It is the uppermost unit of the Wealden Group of rocks within the Weald Basin, and the upper portion of the unit is equivalent in age to the exposed portion of the Wessex Formation on

50-662: A concentration of refugees in Liaodong. The peninsula was an important area of conflict during the First Sino-Japanese War (1894–1895). Defeat precipitated decline in the Qing dynasty which was exploited by colonial powers who extracted numerous concessions. The peninsula was ceded to Japan, along with Taiwan and Penghu , by the Treaty of Shimonoseki of 17 April 1895. However the ceding of Liaodong peninsula

75-688: A soft slate, is quite dry and hard and will support the weight of buildings quite easily. Because it is quite impermeable, and so dry, it does not get broken by tree roots. It is typically found at 750mm down below a layer of yellow clay. Yellow, found on the surface, absorbs water quite readily so becomes very soft in the winter. The two different types make quite different bricks. Baryonyx B. walkeri Multiple partial skulls, one of which had an associated postcranial skeleton. Horshamosaurus H. rudgwickensis "Vertebrae, partial fore and hindlimbs, osteoderms." A dubious genus of nodosaurid ankylosaur belonging to Polacanthinae . Originally named as

100-604: A species of Polacanthus . Valdosaurus V. canaliculatus A dryosaurid , also known from the Wessex Formation Numerous insect species are known from several localities in the Weald Clay, including Rudgwick Brickworks, Auclaye Brickworks, Smokejacks and Clockhouse Brickworks This article about a specific United Kingdom geological feature is a stub . You can help Misplaced Pages by expanding it . Lower Cretaceous Proposals for

125-766: Is a peninsula in southern Liaoning province in Northeast China , and makes up the southwestern coastal half of the Liaodong region. It is located between the mouths of the Daliao River (the historical lower section of the Liao River ) in the west and the Yalu River in the east, and encompasses the territories of the whole sub-provincial city of Dalian and parts of prefectural cities of Yingkou , Anshan and Dandong . The word "Liaodong" literally means "Liao region's east", referring initially to

150-650: The Gojoseon kingdom, which encompassed the northern Korean Peninsula and the region southeast of the Liao River. In the late 4th century BC, the expanding Chinese State of Yan conquered this region from Gojoseon , and established the Liaodong Commandery . After the fall of the Yan state , the region was taken over by the short-lived Qin dynasty , and then its prominent successor Han dynasty . After

175-527: The Isle of Wight . It predominantly consists of thinly bedded mudstone. The un-weathered form is blue/grey, and the yellow/orange is the weathered form, it is used in brickmaking . The formation was deposited in lagoonal , lacustrine and alluvial conditions that varied from freshwater to brackish . The clay alternates with other subordinate lithologies, notably hard red-weathering beds of ironstone , limestone ( Sussex Marble ) and sandstones, notably including

200-666: The Late Jurassic continued to persist. Angiosperms (flowering plants) appeared for the first time during the Early Cretaceous; Archaefructaceae , one of the oldest fossil families (124.6 Ma) was found in the Yixian Formation , China. This time also saw the evolution of the first members of the Neornithes (modern birds). Sinodelphys , a 125 Ma-old boreosphenidan mammal found in

225-865: The Panthalassic Ocean the Pacific Plate continued to grow; the Arctic Alaska-Chukotka terrane formed the Bering Strait. Continued rifting opened new basins in the Indian Ocean, separating India, Antarctica, and Australia. By 110 Ma the Mid-Atlantic Ridge reached south into the Proto-Caribbean and South Atlantic, effectively separating South America from Africa, and continued rifting in

250-628: The Prudhoe Bay Oil Field has been interpreted as being sourced from the Triassic Shublik Formation shale and carbonate, Lower Cretaceous highly radioactive zone shale, and Lower Jurassic Kingak Shale . [REDACTED] Geology portal [REDACTED] Palaeontology portal Liaodong Peninsula The Liaodong or Liaotung Peninsula ( simplified Chinese : 辽东半岛 ; traditional Chinese : 遼東半島 ; pinyin : Liáodōng Bàndǎo )

275-696: The Warring States period Yan commandery of Liaodong , which encompassed an area from modern Liaoning- Jilin border in the north to the Chongchon River on the Korean Peninsula in the south, and from just east of the Qian Mountains to a now-disappeared large wetland between the western banks of middle Liao River and the base of Yiwulü Mountain , historically known as the "Liao Mire " (遼澤, Liáo zé ) roughly in between

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300-691: The Han dynasty fragmented at the turn of the 3rd century, the region changed hands between various warlord states such as the Gongsun Yuan , the nomadic Wuhuan , and Cao Wei , before eventually falling under the reunified Western Jin dynasty . However, after the Western Jin fell from the Uprising of the Five Barbarians and during the subsequent chaotic Sixteen Kingdoms periods, the region

325-654: The South Pacific at c. 120 Ma, is by far the largest LIP in Earth's history. The Ontong Java Plateau today covers an area of 1,860,000 km . In the Indian Ocean another LIP began to form at c. 120 Ma, the Kerguelen Plateau – Broken Ridge , together covering 2,300,000 km . Another LIP on the Liaodong Peninsula , China, c.  131–117 Ma, lasted for 10 million years. It

350-577: The Yixian Formation, China, is one of the oldest mammal fossils found. The fossil location indicates early mammals began to diversify from Asia during the Early Cretaceous. Sinodelphys was more closely related to metatherians (marsupials) than eutherians (placentals) and had feet adapted for climbing trees. Steropodon is the oldest monotreme (egg-lying mammal) discovered. It lived in Gondwana (now Australia) at 105 Ma. Oil in

375-706: The banks of Newfoundland and to connect to the Canada Basin in the Arctic Ocean. With the opening of the Labrador Sea , Greenland became a separate tectonic plate and Laurentia became North America . The Proto-Caribbean Sea continued to grow and the Paraná-Etendeka LIP began to break Africa into three pieces. The Falkland Plateau broke off from southern Africa at 132 Ma and Madagascar ceased to move independently c. 120 Ma. In

400-615: The bloody Siege of Port Arthur . As a consequence of the Treaty of Portsmouth (5 September 1905), which ended the Russo-Japanese War, both sides agreed to evacuate Manchuria and return it to China, with the exception of the Liaodong Peninsula leased territory which was transferred to Japan, which was to administer it as the Kwantung Leased Territory . After Japan lost World War II , and

425-563: The calcareous sandstone unit referred to as the Horsham Stone . It has a gradual, conformable contact with the underlying Tunbridge Wells Sand Formation , and has a sharp, unconformable contact with the overlying Atherfield Clay Formation , a shallow marine unit deposited after marine transgression during the Aptian . The weathered and unweathered forms of the Weald Clay have different physical properties. Blue looks superficially like

450-630: The exact age of the Barremian–Aptian boundary ranged from 126 to 117 Ma until recently (as of 2019), but based on drillholes in Svalbard the defining early Aptian Oceanic Anoxic Event 1a (OAE1a) was carbon isotope dated to 123.1±0.3 Ma, limiting the possible range for the boundary to c. 122–121 Ma. There is a possible link between this anoxic event and a series of Early Cretaceous large igneous provinces (LIP). The Ontong Java - Manihiki - Hikurangi large igneous province, emplaced in

475-711: The modern Xinmin , Liaozhong , Tai'an , Panshan and Beizhen ). The modern usage of "Liaodong" ,however, simply refers to the half of Liaoning province to the left/east bank of the Liao/Daliao River. The Liaodong Peninsula lies on the northern shore of the Yellow Sea , dividing the Liaodong Bay (the largest of the three bays of the Bohai Sea ) to its west from the Korea Bay to its east. It forms

500-610: The northern end completed the longitudinal extent of the Atlantic. In Panthalassa the Ontong-Java Mega-LIP resulted in the formation of new tectonic plates and in the Indian Ocean the Kerguelen LIP began to push India northward. During this time many new types of dinosaur appeared or came into prominence, including ceratopsians , spinosaurids , carcharodontosaurids and coelurosaurs , while survivors from

525-640: The southern part of a mountain belt that continues northward in the Changbai Mountains . The part of the mountain range on the peninsula is known as the Qianshan Mountains , named after Qian Mountain in Anshan , which includes Dahei Mountain in Dalian . The Liaodong region was settled since prehistoric times by Neolithic people such as Xinle culture . It later came under the rule of

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550-811: Was rescinded after the Triple Intervention of 23 April 1895 by Russia, France and Germany. In the aftermath of this intervention, the Russian government pressured the Qing dynasty to lease Liaodong and the strategically important Lüshunkou (Port Arthur) for use by the Russian Navy. As in the First Sino-Japanese War, the Liaodong peninsula was the scene of major fighting in the Russo-Japanese War (1904–1905), including

575-634: Was ruled by Former Yan , Former Qin , Later Yan and later Goguryeo , before being reconquered by the Tang dynasty . In 698 AD, Wu Zhou 's defeat at the Battle of Tianmenling allowed the newly founded Balhae to rule the region for the next two centuries, before they were supplanted by the Khitan Liao dynasty , and followed by the Jin dynasty , Yuan dynasty , Ming dynasty and Qing dynasty . Liaodong

600-576: Was the primary destination of Shandong and Hebei refugees from the Northern Chinese Famine of 1876-1879 . A prior Qing prohibition on immigration to Northeast China was officially relaxed, marking the start of Chuang Guandong . In 1876, Chinese officials told the Customs commissioner at Yingkou that 600,000 people had landed on the Liaodong Peninsula. Government efforts to keep Manchu heartlands free of Chinese settlement resulted in

625-801: Was the result of the subduction of the Kula and Pacific plates, which was probably caused by a superplume . During the opening of the South Atlantic the Paraná–Etendeka LIP produced 1.5 million km of basalts and rhyolites , beginning 133 Ma and lasting for a million years. The opening of the Central Atlantic continued as the Mid-Atlantic Ridge spread north to separate the Iberian Peninsula from

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