Misplaced Pages

#358641

80-633: After being purchased by the Syrian government from the Al-Azm family and undergoing several reconstruction works, the palace now houses the Museum of Arts and Popular Traditions. The palace was built during the Ottoman era over the former site of a Mamluk palace as a residence for the governor of Damascus, As'ad Pasha al-Azm during the reign of Sultan Mahmud I . Serving as a joint residence and guesthouse,

160-455: A Mohs hardness of 2 to 4, dense limestone can have a crushing strength of up to 180 MPa . For comparison, concrete typically has a crushing strength of about 40 MPa. Although limestones show little variability in mineral composition, they show great diversity in texture. However, most limestone consists of sand-sized grains in a carbonate mud matrix. Because limestones are often of biological origin and are usually composed of sediment that

240-463: A bloom of cyanobacteria or microalgae . However, stable isotope ratios in modern carbonate mud appear to be inconsistent with either of these mechanisms, and abrasion of carbonate grains in high-energy environments has been put forward as a third possibility. Formation of limestone has likely been dominated by biological processes throughout the Phanerozoic , the last 540 million years of

320-434: A carbonate rock outcrop can be estimated in the field by etching the surface with dilute hydrochloric acid. This etches away the calcite and aragonite, leaving behind any silica or dolomite grains. The latter can be identified by their rhombohedral shape. Crystals of calcite, quartz , dolomite or barite may line small cavities ( vugs ) in the rock. Vugs are a form of secondary porosity, formed in existing limestone by

400-616: A central quartz grain or carbonate mineral fragment. These likely form by direct precipitation of calcium carbonate onto the ooid. Pisoliths are similar to ooids, but they are larger than 2 mm in diameter and tend to be more irregular in shape. Limestone composed mostly of ooids is called an oolite or sometimes an oolitic limestone . Ooids form in high-energy environments, such as the Bahama platform, and oolites typically show crossbedding and other features associated with deposition in strong currents. Oncoliths resemble ooids but show

480-449: A change in environment that increases the solubility of calcite. Dense, massive limestone is sometimes described as "marble". For example, the famous Portoro "marble" of Italy is actually a dense black limestone. True marble is produced by recrystallization of limestone during regional metamorphism that accompanies the mountain building process ( orogeny ). It is distinguished from dense limestone by its coarse crystalline texture and

560-949: A composition reflecting the organisms that produced them and the environment in which they were produced. Low-magnesium calcite skeletal grains are typical of articulate brachiopods , planktonic (free-floating) foraminifera, and coccoliths . High-magnesium calcite skeletal grains are typical of benthic (bottom-dwelling) foraminifera, echinoderms , and coralline algae . Aragonite skeletal grains are typical of molluscs , calcareous green algae , stromatoporoids , corals , and tube worms . The skeletal grains also reflect specific geological periods and environments. For example, coral grains are more common in high-energy environments (characterized by strong currents and turbulence) while bryozoan grains are more common in low-energy environments (characterized by quiet water). Ooids (sometimes called ooliths) are sand-sized grains (less than 2mm in diameter) consisting of one or more layers of calcite or aragonite around

640-412: A considerable fraction of the limestone bed. At depths greater than 1 km (0.62 miles), burial cementation completes the lithification process. Burial cementation does not produce stylolites. When overlying beds are eroded, bringing limestone closer to the surface, the final stage of diagenesis takes place. This produces secondary porosity as some of the cement is dissolved by rainwater infiltrating

720-483: A drop of dilute hydrochloric acid is dropped on it. Dolomite is also soft but reacts only feebly with dilute hydrochloric acid, and it usually weathers to a characteristic dull yellow-brown color due to the presence of ferrous iron. This is released and oxidized as the dolomite weathers. Impurities (such as clay , sand, organic remains, iron oxide , and other materials) will cause limestones to exhibit different colors, especially with weathered surfaces. The makeup of

800-637: A few million years, as this is the most stable form of calcium carbonate. Ancient carbonate formations of the Precambrian and Paleozoic contain abundant dolomite, but limestone dominates the carbonate beds of the Mesozoic and Cenozoic . Modern dolomite is quite rare. There is evidence that, while the modern ocean favors precipitation of aragonite, the oceans of the Paleozoic and middle to late Cenozoic favored precipitation of calcite. This may indicate

880-455: A few thousand years. As rainwater mixes with groundwater, aragonite and high-magnesium calcite are converted to low-calcium calcite. Cementing of thick carbonate deposits by rainwater may commence even before the retreat of the sea, as rainwater can infiltrate over 100 km (60 miles) into sediments beneath the continental shelf. As carbonate sediments are increasingly deeply buried under younger sediments, chemical and mechanical compaction of

SECTION 10

#1732782344359

960-490: A high percentage of the mineral dolomite , CaMg(CO 3 ) 2 . Magnesian limestone is an obsolete and poorly-defined term used variously for dolomite, for limestone containing significant dolomite ( dolomitic limestone ), or for any other limestone containing a significant percentage of magnesium . Most limestone was formed in shallow marine environments, such as continental shelves or platforms , though smaller amounts were formed in many other environments. Much dolomite

1040-435: A limestone sample except in thin section and are less common in ancient limestones, possibly because compaction of carbonate sediments disrupts them. Limeclasts are fragments of existing limestone or partially lithified carbonate sediments. Intraclasts are limeclasts that originate close to where they are deposited in limestone, while extraclasts come from outside the depositional area. Intraclasts include grapestone , which

1120-471: A lower Mg/Ca ratio in the ocean water of those times. This magnesium depletion may be a consequence of more rapid sea floor spreading , which removes magnesium from ocean water. The modern ocean and the ocean of the Mesozoic have been described as "aragonite seas". Most limestone was formed in shallow marine environments, such as continental shelves or platforms . Such environments form only about 5% of

1200-525: A lower diversity of organisms and a greater fraction of silica and clay minerals characteristic of marls . The Green River Formation is an example of a prominent freshwater sedimentary formation containing numerous limestone beds. Freshwater limestone is typically micritic. Fossils of charophyte (stonewort), a form of freshwater green algae, are characteristic of these environments, where the charophytes produce and trap carbonates. Limestones may also form in evaporite depositional environments . Calcite

1280-523: A mechanism for dolomitization, with one 2004 review paper describing it bluntly as "a myth". Ordinary seawater is capable of converting calcite to dolomite, if the seawater is regularly flushed through the rock, as by the ebb and flow of tides (tidal pumping). Once dolomitization begins, it proceeds rapidly, so that there is very little carbonate rock containing mixed calcite and dolomite. Carbonate rock tends to be either almost all calcite/aragonite or almost all dolomite. About 20% to 25% of sedimentary rock

1360-448: A plausible source of mud. Another possibility is direct precipitation from the water. A phenomenon known as whitings occurs in shallow waters, in which white streaks containing dispersed micrite appear on the surface of the water. It is uncertain whether this is freshly precipitated aragonite or simply material stirred up from the bottom, but there is some evidence that whitings are caused by biological precipitation of aragonite as part of

1440-449: A radial rather than layered internal structure, indicating that they were formed by algae in a normal marine environment. Peloids are structureless grains of microcrystalline carbonate likely produced by a variety of processes. Many are thought to be fecal pellets produced by marine organisms. Others may be produced by endolithic (boring) algae or other microorganisms or through breakdown of mollusc shells. They are difficult to see in

1520-472: A word of Arabic whereas Mehmed was apparently thoroughly Arabized". Ismail Pasha, who later became wāli (governor) of Tripoli, was transferred to Damascus in 1725 at the request of the mufti , after fighting between different factions of janissaries prevented the Hajj caravan from departing on time. His brother became the wali of Tripoli, and his son became the wali of Sidon. In 1730 when Sultam Ahmed III

1600-726: Is a prominent Damascene family. Their political influence in Ottoman Syria began in the 18th century when members of the family administered Maarrat al-Nu'man and Hama . A scion of the family, Ismail Pasha al-Azm , was appointed wāli of Damascus Eyalet in 1725. Between 1725 and 1783, members of the family, including As'ad Pasha al-Azm , held power in Damascus for 47 years, in addition to periodical appointments in Sidon Eyalet , Tripoli Eyalet , Hama , Aleppo Eyalet , and Egypt Eyalet . The family's influence declined in

1680-416: Is a type of carbonate sedimentary rock which is the main source of the material lime . It is composed mostly of the minerals calcite and aragonite , which are different crystal forms of CaCO 3 . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as

SECTION 20

#1732782344359

1760-560: Is also favored on the seaward margin of shelves and platforms, where there is upwelling deep ocean water rich in nutrients that increase organic productivity. Reefs are common here, but when lacking, ooid shoals are found instead. Finer sediments are deposited close to shore. The lack of deep sea limestones is due in part to rapid subduction of oceanic crust, but is more a result of dissolution of calcium carbonate at depth. The solubility of calcium carbonate increases with pressure and even more with higher concentrations of carbon dioxide, which

1840-482: Is an uncommon mineral in limestone, and siderite or other carbonate minerals are rare. However, the calcite in limestone often contains a few percent of magnesium . Calcite in limestone is divided into low-magnesium and high-magnesium calcite, with the dividing line placed at a composition of 4% magnesium. High-magnesium calcite retains the calcite mineral structure, which is distinct from dolomite. Aragonite does not usually contain significant magnesium. Most limestone

1920-402: Is carbonate rock, and most of this is limestone. Limestone is found in sedimentary sequences as old as 2.7 billion years. However, the compositions of carbonate rocks show an uneven distribution in time in the geologic record. About 95% of modern carbonates are composed of high-magnesium calcite and aragonite. The aragonite needles in carbonate mud are converted to low-magnesium calcite within

2000-474: Is clusters of peloids cemented together by organic material or mineral cement. Extraclasts are uncommon, are usually accompanied by other clastic sediments, and indicate deposition in a tectonically active area or as part of a turbidity current . The grains of most limestones are embedded in a matrix of carbonate mud. This is typically the largest fraction of an ancient carbonate rock. Mud consisting of individual crystals less than 5 μm (0.20 mils) in length

2080-416: Is commonly white to gray in color. Limestone that is unusually rich in organic matter can be almost black in color, while traces of iron or manganese can give limestone an off-white to yellow to red color. The density of limestone depends on its porosity, which varies from 0.1% for the densest limestone to 40% for chalk. The density correspondingly ranges from 1.5 to 2.7 g/cm . Although relatively soft, with

2160-420: Is controlled largely by the amount of dissolved carbon dioxide ( CO 2 ) in the water. This is summarized in the reaction: Increases in temperature or decreases in pressure tend to reduce the amount of dissolved CO 2 and precipitate CaCO 3 . Reduction in salinity also reduces the solubility of CaCO 3 , by several orders of magnitude for fresh water versus seawater. Near-surface water of

2240-545: Is converted to low-magnesium calcite. Diagenesis is the likely origin of pisoliths , concentrically layered particles ranging from 1 to 10 mm (0.039 to 0.394 inches) in diameter found in some limestones. Pisoliths superficially resemble ooids but have no nucleus of foreign matter, fit together tightly, and show other signs that they formed after the original deposition of the sediments. Silicification occurs early in diagenesis, at low pH and temperature, and contributes to fossil preservation. Silicification takes place through

2320-503: Is deposited close to where it formed, classification of limestone is usually based on its grain type and mud content. Most grains in limestone are skeletal fragments of marine organisms such as coral or foraminifera . These organisms secrete structures made of aragonite or calcite, and leave these structures behind when they die. Other carbonate grains composing limestones are ooids , peloids , and limeclasts ( intraclasts and extraclasts  [ ca ] ). Skeletal grains have

2400-460: Is described as coquinite . Chalk is a soft, earthy, fine-textured limestone composed of the tests of planktonic microorganisms such as foraminifera, while marl is an earthy mixture of carbonates and silicate sediments. Limestone forms when calcite or aragonite precipitate out of water containing dissolved calcium, which can take place through both biological and nonbiological processes. The solubility of calcium carbonate ( CaCO 3 )

2480-617: Is described as micrite . In fresh carbonate mud, micrite is mostly small aragonite needles, which may precipitate directly from seawater, be secreted by algae, or be produced by abrasion of carbonate grains in a high-energy environment. This is converted to calcite within a few million years of deposition. Further recrystallization of micrite produces microspar , with grains from 5 to 15 μm (0.20 to 0.59 mils) in diameter. Limestone often contains larger crystals of calcite, ranging in size from 0.02 to 0.1 mm (0.79 to 3.94 mils), that are described as sparry calcite or sparite . Sparite

Al-Azm Palace - Misplaced Pages Continue

2560-462: Is distinguished from micrite by a grain size of over 20 μm (0.79 mils) and because sparite stands out under a hand lens or in thin section as white or transparent crystals. Sparite is distinguished from carbonate grains by its lack of internal structure and its characteristic crystal shapes. Geologists are careful to distinguish between sparite deposited as cement and sparite formed by recrystallization of micrite or carbonate grains. Sparite cement

2640-541: Is more likely that a Beduin family in the Ottoman service should become partly turkicized and live for a while in Anatolia than that a Turkish family should seek to derive prestige by falsely attributing its origins to a Beduin tribe." On the other hand, Dr Abdul Karim Rafeq "opts for the local-origin theory without committing himself to the beduin part." In response to primary sources stating "that Sadeddin [Pasha al-Azm]

2720-522: Is no proof that the Azms themselves claimed to be of bedouin origin". The controversy can be understood in light of statements made by Dr. Shamir Shimon and Dr. Abdul Karim Rafeq. Dr. Shimon Shamir states that "although none of the views is supported by definite proofs, the latter [that is, the Beduin theory] seems to be more acceptable. In the realities of Syria in the seventeenth and eighteenth centuries, it

2800-560: Is one of the first minerals to precipitate in marine evaporites. Most limestone is formed by the activities of living organisms near reefs, but the organisms responsible for reef formation have changed over geologic time. For example, stromatolites are mound-shaped structures in ancient limestones, interpreted as colonies of cyanobacteria that accumulated carbonate sediments, but stromatolites are rare in younger limestones. Organisms precipitate limestone both directly as part of their skeletons, and indirectly by removing carbon dioxide from

2880-473: Is otherwise chemically fairly pure, with clastic sediments (mainly fine-grained quartz and clay minerals ) making up less than 5% to 10% of the composition. Organic matter typically makes up around 0.2% of a limestone and rarely exceeds 1%. Limestone often contains variable amounts of silica in the form of chert or siliceous skeletal fragments (such as sponge spicules, diatoms , or radiolarians ). Fossils are also common in limestone. Limestone

2960-472: Is produced by decaying organic matter settling into the deep ocean that is not removed by photosynthesis in the dark depths. As a result, there is a fairly sharp transition from water saturated with calcium carbonate to water unsaturated with calcium carbonate, the lysocline , which occurs at the calcite compensation depth of 4,000 to 7,000 m (13,000 to 23,000 feet). Below this depth, foraminifera tests and other skeletal particles rapidly dissolve, and

3040-518: Is secondary dolomite, formed by chemical alteration of limestone. Limestone is exposed over large regions of the Earth's surface, and because limestone is slightly soluble in rainwater, these exposures often are eroded to become karst landscapes. Most cave systems are found in limestone bedrock. Limestone has numerous uses: as a chemical feedstock for the production of lime used for cement (an essential component of concrete ), as aggregate for

3120-551: Is “A characteristic of the monumental masonry of Damascus .” The Museum of Arts and Popular Traditions contains, among others, a rich collection of Syrian traditional costumes , most of which have been reproduced by the Syrian artist Ziad Zukkari . [REDACTED] Media related to Azem Palace at Wikimedia Commons 33°30′37″N 36°18′25″E  /  33.51028°N 36.30694°E  / 33.51028; 36.30694 Al-Azm family Al-Azm family ( Arabic : آل العظم ʾĀl al-ʿAẓm , Turkish : Azm Ailesi )

3200-401: The harem , the selamlek and the khademlek . The harem is the family wing, which contains the private residences of the family and includes the baths, which are a replica of the public baths in the city on a smaller scale. The selamlek is the guest wing, and it comprises the formal halls, reception areas and large courtyards with traditional cascading fountain, while in the northern part of

3280-568: The Great Syrian Revolution , the French government shelled Damascus to put down the rebellion, and the old quarter of Damascus was shelled which caused extensive damage to the palace, as the main reception room, the private baths and the roofs were all set on fire while the walls were destroyed. Following the end of the revolution, the French government set about reconstructing the buildings. The restoration work began immediately and

Al-Azm Palace - Misplaced Pages Continue

3360-677: The 19th century, failing to establish a true dynasty. The origins of the Azm family are relatively obscure and evidence has been described as "contradictory and generally unsatisfactory." One of the most prominent families in Ottoman Syria, the Al-Azm's may have originated from the region of Konya in Anatolia ; hence, their roots in Turkey may shed light on recruitment and career patterns of

3440-491: The Damascus-Medina caravan route, and later migrated to Anatolia, then to Ma'arra." In fact, there is no doubt, however, that to eighteenth century local annalists and European observers the ‘Aẓms were known as a family of Arab (Bedouin) origin... It may very well be that the latter view [being of Turkish stock] is a mistaken conclusion based on the family's long residence in the province of Konya. However, "there

3520-496: The Earth's history. Limestone may have been deposited by microorganisms in the Precambrian , prior to 540 million years ago, but inorganic processes were probably more important and likely took place in an ocean more highly oversaturated in calcium carbonate than the modern ocean. Diagenesis is the process in which sediments are compacted and turned into solid rock . During diagenesis of carbonate sediments, significant chemical and textural changes take place. For example, aragonite

3600-556: The Ottoman administration with hereditary tax farms in Homs , Hama and Ma'arrat al-Nu'man. In an article written by a member of the family, Professor Sadiq Jalal al-Azm , the introductory author, Jean-Pierre Rondas , describes Al-Azm as: ...in fact of 'Ottoman' and Turkish descent. His family belonged to the Ottoman ruling class in Damascus; its power dates back to the 17th and 18th centuries... The Turkish family al-Azm continued to stay in Damascus [...] under French mandate. A member of

3680-420: The Ottoman era. Family members were using the name Azmzade in the nineteenth century, in reference to the Azm clan with the zade being an addition indicating nobility. The Latin inscription of the name translated from Arabic script has evolved over time and is now written in different ways. Some family members have the family name Azme, Aladem, Alazm, Aladam, Alzm or some other surnames, although they all belong to

3760-430: The accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite , a closely related rock, which contains

3840-434: The base of roads, as white pigment or filler in products such as toothpaste or paint, as a soil conditioner , and as a popular decorative addition to rock gardens . Limestone formations contain about 30% of the world's petroleum reservoirs . Limestone is composed mostly of the minerals calcite and aragonite , which are different crystal forms of calcium carbonate ( CaCO 3 ). Dolomite , CaMg(CO 3 ) 2 ,

3920-657: The beds. This may include the formation of vugs , which are crystal-lined cavities within the limestone. Diagenesis may include conversion of limestone to dolomite by magnesium-rich fluids. There is considerable evidence of replacement of limestone by dolomite, including sharp replacement boundaries that cut across bedding. The process of dolomitization remains an area of active research, but possible mechanisms include exposure to concentrated brines in hot environments ( evaporative reflux ) or exposure to diluted seawater in delta or estuary environments ( Dorag dolomitization ). However, Dorag dolomitization has fallen into disfavor as

4000-570: The building of this palace were several types of stones including limestone , sandstone , basalt , and marble , chosen to provide a natural decoration. The ceilings have painted wooden panels that display natural scenes. Dr. Andrew Petersen, director of Research in Islamic Archaeology at the University of Wales Lampeter states that the use of ablaq (alternating courses of white limestone and black basalt ) in this building

4080-466: The depositional fabric of carbonate rocks. Dunham divides the rocks into four main groups based on relative proportions of coarser clastic particles, based on criteria such as whether the grains were originally in mutual contact, and therefore self-supporting, or whether the rock is characterized by the presence of frame builders and algal mats. Unlike the Folk scheme, Dunham deals with the original porosity of

SECTION 50

#1732782344359

4160-469: The deposits are highly porous, so that they have a spongelike texture, they are typically described as tufa . Secondary calcite deposited by supersaturated meteoric waters ( groundwater ) in caves is also sometimes described as travertine. This produces speleothems , such as stalagmites and stalactites . Coquina is a poorly consolidated limestone composed of abraded pieces of coral , shells , or other fossil debris. When better consolidated, it

4240-540: The director of the museum, which opened in 1954. The crowd for the museum's opening greatly exceeded expectations that led Shafiq Imam to design a new staircase for the main hall to allow visitors to enter from one side and leave from another. The palace received the Aga Khan Award for Architecture in 1983. The palace is 6400 m, and its architecture is an excellent example of Damascene traditional houses. The structure consists of several buildings and three wings:

4320-406: The earth's oceans are oversaturated with CaCO 3 by a factor of more than six. The failure of CaCO 3 to rapidly precipitate out of these waters is likely due to interference by dissolved magnesium ions with nucleation of calcite crystals, the necessary first step in precipitation. Precipitation of aragonite may be suppressed by the presence of naturally occurring organic phosphates in

4400-445: The family members who held high positions as Ottoman officers in the Syrian provinces. The Al-Azm's began to emerge as a major influence in the region when Ibrahim al-'Azm, "a rural notable possibly of Turkish stock", went to Ma'arrat al-Nu'man to restore order in the mid-seventeenth century. Upon his death, Ibrahim al-'Azm's sons, Ismail Pasha al-Azm and Sulayman Pasha al-Azm , completed their father's task and were rewarded by

4480-467: The family to govern Damascus was Abdullah Pasha al-Azm who served intermittently between 1795 and 1807. In the mid-18th century the al-Azm family reconciled itself to power centres outside the family. Consequently, two members of its family, Layla bint al-Sayyid Ibrahim al-Azm and Khadija bint Nasuh Pasha, were married to Turkish mamluks in the family's service to retain the Azm family name. The lineage descending from Layla indicates that this branch of

4560-530: The family were concentrated around Hama, and many held government posts there. Al-Azm's era brought a building boom to Damascus where dozens of baths , khans , schools and souqs were built, many of which still remain today. Most famous of them are the Azm Palace in Damascus, and the Azm Palace in Hama, both of which were built by As'ad Pasha al-Azm as palatial residences. Last names were not used during

4640-589: The family, Khalid bey al-Azm , even became prime minister. The family's political influence lasted until 1963, when the pan-Arabic nationalist Baath party seized power. In addition to the Turkish origin theory, an Arab origin is believed to be possible. In particular, the Azm family is believed to be part of "the Banu Azm tribe of the northern Hijaz, [who] served the Ottomans in the sixteenth century by protecting

4720-399: The first refers to the grains and the second to the cement. For example, a limestone consisting mainly of ooids, with a crystalline matrix, would be termed an oosparite. It is helpful to have a petrographic microscope when using the Folk scheme, because it is easier to determine the components present in each sample. Robert J. Dunham published his system for limestone in 1962. It focuses on

4800-572: The formation of distinctive minerals from the silica and clay present in the original limestone. Two major classification schemes, the Folk and Dunham, are used for identifying the types of carbonate rocks collectively known as limestone. Robert L. Folk developed a classification system that places primary emphasis on the detailed composition of grains and interstitial material in carbonate rocks . Based on composition, there are three main components: allochems (grains), matrix (mostly micrite), and cement (sparite). The Folk system uses two-part names;

4880-429: The geologic record are called bioherms . Many are rich in fossils, but most lack any connected organic framework like that seen in modern reefs. The fossil remains are present as separate fragments embedded in ample mud matrix. Much of the sedimentation shows indications of occurring in the intertidal or supratidal zones, suggesting sediments rapidly fill available accommodation space in the shelf or platform. Deposition

SECTION 60

#1732782344359

4960-479: The new building blended perfectly into the 18th century walls of the palace. Upon Syrian independence in 1946, the French Institute was dissolved and evacuated from the building and the house was returned to the Azm family, six years later in 1951 it was purchased by the Syrian government for 100,000 pounds ($ 30,000), which turned it into the Museum of Arts and Popular Traditions. Shafiq Imam was appointed

5040-410: The ocean basins, but limestone is rarely preserved in continental slope and deep sea environments. The best environments for deposition are warm waters, which have both a high organic productivity and increased saturation of calcium carbonate due to lower concentrations of dissolved carbon dioxide. Modern limestone deposits are almost always in areas with very little silica-rich sedimentation, reflected in

5120-515: The owner's consent". After al-Azm's death, the palace continued to house his descendants for generations later. While touring Damascus in 1898, Emperor Wilhelm II of Germany visited the palace. The palace remained in the ownership of the Azm family until 1920, when the palace was sold to the French. The central court or haremlek was purchased for 4000 gold pounds (after 1958 the currency unit name in English changed from "Lira" to "Pound"). During

5200-432: The palace was a monument to 18th-century Arab architecture. The palace was built by 800 workers in a span of three years, and the building was decorated with highly sophisticated and expensive decorative elements. A local Damascene barber, Shaikh Ahmad Al-Bidiri Al-Halaq recorded in his diary how "every time he [Al-Azem] heard of an antiquity or rare work of marble or porcelain, he would send someone to get it - with or without

5280-501: The palace were the servant quarters and the center of housekeeping activities. One of the palace's most interesting parts is the hammam , or baths. It is composed of a succession of small rooms and narrow corridors leading to the main steam room in the heart of the building. Near the hammam is the main marble-floored reception hall, and behind it is a second, smaller courtyard with a number of rooms now used to display various traditional crafts such as glass, copper and textiles. Used in

5360-457: The pilgrim caravan. The Ottoman state was also interested in confiscating the wealth al-Azm accumulated during his tenure in office. The large amounts of money collected made the state revalue its currency. He was transferred to Aleppo and later dismissed and executed. This marked the end of the family's golden age. It continued to assert some influence, and many of its members served as walis later, but its great days were over. The last member of

5440-594: The province of Damascus. Despite As'ad Pasha's ability to ensure the security of the pilgrim caravan, the new Ottoman authorities in Istanbul deposed him in 1757 after fourteen years of governance. The Grand Vizier at the time, Raghib Pasha , denounced him as a, "peasant son of a peasant," after a deal between the two of them failed. In addition, the Kizlar Agha of Istanbul disliked al-Azm for apparently not taking good care of him when he passed through Damascus on

5520-426: The reaction: Fossils are often preserved in exquisite detail as chert. Cementing takes place rapidly in carbonate sediments, typically within less than a million years of deposition. Some cementing occurs while the sediments are still under water, forming hardgrounds . Cementing accelerates after the retreat of the sea from the depositional environment, as rainwater infiltrates the sediment beds, often within just

5600-482: The relative purity of most limestones. Reef organisms are destroyed by muddy, brackish river water, and carbonate grains are ground down by much harder silicate grains. Unlike clastic sedimentary rock, limestone is produced almost entirely from sediments originating at or near the place of deposition. Limestone formations tend to show abrupt changes in thickness. Large moundlike features in a limestone formation are interpreted as ancient reefs , which when they appear in

5680-460: The rock. The Dunham scheme is more useful for hand samples because it is based on texture, not the grains in the sample. A revised classification was proposed by Wright (1992). It adds some diagenetic patterns to the classification scheme. Travertine is a term applied to calcium carbonate deposits formed in freshwater environments, particularly waterfalls , cascades and hot springs . Such deposits are typically massive, dense, and banded. When

5760-423: The same family. In addition, some members of the family that remained in Turkey have a variety of different last names which were selected following the promulgation of a 1934 law which made last names mandatory and banned the use to references of nobility. It is not clear whether some use the surname Kemikoğlu, literally meaning "the son the bone". Limestone Limestone ( calcium carbonate CaCO 3 )

5840-479: The sediments increases. Chemical compaction takes place by pressure solution of the sediments. This process dissolves minerals from points of contact between grains and redeposits it in pore space, reducing the porosity of the limestone from an initial high value of 40% to 80% to less than 10%. Pressure solution produces distinctive stylolites , irregular surfaces within the limestone at which silica-rich sediments accumulate. These may reflect dissolution and loss of

5920-662: The sediments of the ocean floor abruptly transition from carbonate ooze rich in foraminifera and coccolith remains ( Globigerina ooze) to silicic mud lacking carbonates. In rare cases, turbidites or other silica-rich sediments bury and preserve benthic (deep ocean) carbonate deposits. Ancient benthic limestones are microcrystalline and are identified by their tectonic setting. Fossils typically are foraminifera and coccoliths. No pre-Jurassic benthic limestones are known, probably because carbonate-shelled plankton had not yet evolved. Limestones also form in freshwater environments. These limestones are not unlike marine limestone, but have

6000-533: The water by photosynthesis and thereby decreasing the solubility of calcium carbonate. Limestone shows the same range of sedimentary structures found in other sedimentary rocks. However, finer structures, such as lamination , are often destroyed by the burrowing activities of organisms ( bioturbation ). Fine lamination is characteristic of limestone formed in playa lakes , which lack the burrowing organisms. Limestones also show distinctive features such as geopetal structures , which form when curved shells settle to

6080-553: The water. Although ooids likely form through purely inorganic processes, the bulk of CaCO 3 precipitation in the oceans is the result of biological activity. Much of this takes place on carbonate platforms . The origin of carbonate mud, and the processes by which it is converted to micrite, continue to be a subject of research. Modern carbonate mud is composed mostly of aragonite needles around 5 μm (0.20 mils) in length. Needles of this shape and composition are produced by calcareous algae such as Penicillus , making this

6160-489: Was "un autre pacha arabe de nation"; and that Mehmed [Pasha al-Azm] was of an Arab family... [and] that the 'Azms were "Arabs" (awlad al-'Arab) from the Arab lands (al-bilad al-'Arabiyya)," Dr Rafeq advocates for treating these statements with great caution, especially the epithet "Arab", which he takes to mean "local" as opposed to Ottoman. Finally, it is important to note that there is evidence that "Sulayman Pasha al-Azm knew not

6240-471: Was deposed they were all dismissed, but not for long. Sulayman Pasha al-Azm , brother of Ismail Pasha, became wali of Damascus between 1733 and 1738 and again from 1741 until his death in 1743. He was succeeded by his nephew As'ad Pasha al-Azm who reigned between 1743 and 1757, and was considered the greatest governor of Damascus in Ottoman times. As'ad Pasha overcame all his local adversaries after three years struggle. In his reign Hama and Homs were added to

6320-411: Was handled by architects Lucien Cavaro, and Michel Ecochard. The architects conducted a simplified, less ornate reconstruction of the palace. Following reconstruction, the French government used the palace to house the newly created French Institute, and Michel Ecochard, who worked in reconstructing the site, was commissioned to design a new house for the director of the institute. Although fairly modern,

6400-416: Was likely deposited in pore space between grains, suggesting a high-energy depositional environment that removed carbonate mud. Recrystallized sparite is not diagnostic of depositional environment. Limestone outcrops are recognized in the field by their softness (calcite and aragonite both have a Mohs hardness of less than 4, well below common silicate minerals) and because limestone bubbles vigorously when

#358641