Carbonate platform. The Shanganning Carbonate Platform (SCP) of the Nort...

The Anguilla Bank is the largest carbonate platform (area of

Tectonic extension and drowning of the Inici platform in the Pliensbachian produced a vast fault-bounded pelagic carbonate platform, the Sciacca Plateau (Muraro & Santantonio, 2002, 2003).Within the general picture of a drowned intrabasinal high capped by a thin pelagic succession, the San Vincenzo area of the Sciacca Plateau displays quite a remarkable set of unique features, which have not ...Current classifications of carbonate platforms use depositional gradient as the main criterion for separating systems into two end-member types, ramps and flat-topped platforms (FTPs). However ...Jan 1, 2000 · The architecture of carbonate platform is determined by the efficiency of the carbonate factory and by the rate of creation of accommodation space, which reflect the interplay of different factors ... Interpretation of two Miocene carbonate platforms in Southeastern part of Central Luconia Province has provided an insight of the structural history of the platforms, relating syn-depositional ...The Adriatic Carbonate Platform (AdCP), was a separate shallowmarine depositional system characterized by a lack of terrigenous input and was connected to Gondwana towards the South via Gavrovo ...Nov 1, 2017 · Backstepping of carbonate platform margins is an important process for understanding how carbonate platform responds to paleoenvironment changes. The products of backstepping, such as backstepped margin, backstepping surface and backstepping succession have been widely documented on both modern and ancient platforms around the world. The Xisha Archipelago is a group of isolated carbonate platforms located in South China Sea (SCS) (Fig. 1).The Xuande Atoll is developed with an area of >600 km 2 on the north part of the Xisha Archipelago. The ongoing deposition on the Xuande Atoll (Fig. 2), thus, serve as a good candidate for examining the processes that control the …Backstepping of carbonate platform margins is an important process for understanding how carbonate platform responds to paleoenvironment changes. The products of backstepping, such as backstepped margin, backstepping surface and backstepping succession have been widely documented on both modern and ancient platforms around the world.A carbonate (non-rimmed) ramp platform, evolving from homoclinal to distally steepened, shaped the pre-fall shelf by depositing carbonates (Dalmiapuram Formation) while, organic-rich glauconite ...Dec 1, 2015 · Six types of carbonate platform marginal slope have been identified in the Cambrian-Ordovician of Tarim Basin. These include a progradational carbonate ramp platform, a progradational carbonate rimmed platform, an aggradational rimmed carbonate platform, a retrogradational rimmed carbonate platform, an aggradational margin on an isolated carbonate platform and a retrogradational margin on a ... Isolated carbonate platforms of the OIB are classified as of the volcanic pedestal platform type (sensu Bosence, 2005) which developed on the top of pre-existing volcanic seamounts and ridges, surrounded by deep water settings, and therefore isolated from any terrigenous sediment supply. In essence, the spatial distribution and morphologies of ...The seafloor around carbonate platforms is largely shaped and modified by downslope processes. However, the role of alongslope processes, including bottom currents, on the morphological ...The vertical scale is given in two-way-time, the horizontal scale is in kilometer. The base of the carbonate platform is sealing most of the extensional tectonics before it was overthrusted by the Palawan-Borneo wedge (right). The "Red" unconformity is located well above the carbonate platform. So it is a post-rift-feature in the trough.In this paper, we present sedimentological and geochemical data across two uppermost Pliensbachian to lower Toarcian shallow-marine carbonate platform successions exposed in the Tibetan Himalaya, deposited at a low latitude (∼21.8°S to ∼26.1°S) in the southern hemisphere (Fig. 1 A; Huang et al., 2015).We assess the environmental evolution of these platforms through the T-OAE, and discuss ...The carbonate factory shut down when the platform was suffocated by siliciclastic mud sourced from the west, and tidal activity diminished as the whole basin shallowed. The interpretation of the carbonate platform presented herein is radically different from previous views that considered the Waterton and Altyn formations to be predominantly of ...Sediment type within carbonate turbidites is variable and controlled by source. Turbidites are among the few carbonates that have been transported significant distances. Close to the basin-platform margin carbonate turbidite deposits form irregular ribbons of channel-fill that are perpendicular to depositional strike. Furthermore, varying marine carbonate mineral distributions ascribed to changes in water temperature are observed across carbonate ramps and platforms in both temperate and tropical settings, as well as on local scales (Rao and Adabi, 1992; Swart and Eberli, 2005). Therefore, mineralogical differences in marine carbonates are related to ...The abundance and types of reef-bearing carbonate platforms reflect the evolution of Devonian climate, with conspicuous microbial-algal reefs in the warm Early and Late Devonian and sponge-coral reefs in the cooler Middle Devonian. A dolomitized Wenlock-Lower Devonian microbial-algal reef-bearing carbonate platform hosts epigenetic copper-cobalt-germanium (Cu-Co-Ge) sulfide mineralization at ...Abstract. The middle Miocene onset of modern ocean circulation patterns changed the growth style of isolated tropical carbonate platforms because surface and contour currents began shaping the flanks of these edifices. Since then, ocean currents have redistributed the off-bank-transported sediment, reduced sedimentation by particle sorting or ...Dec 1, 2022 · Backstepping of carbonate platform margins is an important process for understanding how carbonate platform responds to paleoenvironment changes. The products of backstepping, such as backstepped margin, backstepping surface and backstepping succession have been widely documented on both modern and ancient platforms around the world. For the present study, only dolomitized outcrops of the progradational carbonate platform were analyzed, but particular emphasis was placed on the outcrop called "Seru Grandi" located in the Washington-Slagbaai National Park, the northern side of the island. The excellent exposures of the Mio-Pliocene dolomite bodies allow detailed studies ...China's Paleozoic deep carbonate effective reservoirs, mainly non-porous reservoirs, are generally formed under the interaction of late diagenesis, hydrothermal fluids, and structural fractures. Faults and their deformation mechanism and internal structure of fault zones play an important role in the formation of carbonate reservoirs and hydrocarbon accumulation. Based on the detailed ...The Neogene carbonate succession on the island of Bonaire (Netherland Antilles) shows complex geometries associated with a sequence of depositional and erosional events which reflects the history of this isolated platform and the interaction between eustasy and tectonics. Three major episodes of carbonate platform deposition are defined which show contrasting depositional styles: 1 ...The growth potential of carbonate platforms, i.e., the maximum rate at which they can aggrade vertically, is difficult to assess. To estimate the growth potential from the conservative side and search for variations with time, we have compiled published accumulation rates from the Phanerozoic. Accumulation rates vary in a pattern, with maximum rates up to 200 m/Ma or more (not corrected for ...The two carbonate platforms studied are located in the Galve sub-basin, on the western side of the Maestrat Basin in the eastern Iberian Chain (E Spain) (Fig. 1 A). This basin developed as a result of Late Jurassic-Early Cretaceous rifting that affected the eastern Iberian Plate. During this time, a Mesozoic sedimentary succession up to a ...Carbonate Ramp. A carbonate ramp is a platform or shelf that is gently inclined (<1°) towards an open sea or ocean with no major build-up of reefs or steep slopes (Figure 4). From: Encyclopedia of Geology, 2005. View all Topics. Add to Mendeley. The carbonate platform, where bunch of petroleum reserves are accumulated and discovered, is commonly a place with natural temporal-spatial boundaries (Red, 1985; Pomar, 2001). The boundaries of ...The late Albian–early Turonian Sarvak Formation is the most important carbonate reservoir of the Abadan Plain, SW Iran. Twelve microfacies were identified, representing six facies belts: lagoon, shoal, rudist biostrome, slope, proximal, and distal open marine. The lower and middle parts of the Sarvak Formation were deposited in a …The depositional organization and architecture of the middle–late Devonian. Yangdi rimmed carbonate platform margin in the Guilin area of South China.The depositional organization and architecture of the middle–late Devonian. Yangdi rimmed carbonate platform margin in the Guilin area of South China.It is pointed out that the carbonate platform in the Xisha sea area adjacent to the Huaguang Sag in the Qiongdongnan Basin and the northern Zhongjiannan Basin is a potential area for oil and gas ...Most of these carbonate platforms are located nearshore or around the shelf break of the South China Sea continental shelf, and only very few offshore carbonate platforms detached from continent have been explored. Located northwest offshore of Borneo and Palawan, the Dangerous Grounds is a continental slope area characterized by large amounts ...In this paper, we present sedimentological and geochemical data across two uppermost Pliensbachian to lower Toarcian shallow-marine carbonate platform successions exposed in the Tibetan Himalaya, deposited at a low latitude (∼21.8°S to ∼26.1°S) in the southern hemisphere (Fig. 1 A; Huang et al., 2015).We assess the environmental evolution of these platforms through the T-OAE, and discuss ...Carbonate Ramp. A carbonate ramp is a platform or shelf that is gently inclined (<1°) towards an open sea or ocean with no major build-up of reefs or steep slopes (Figure 4). From: Encyclopedia of Geology, 2005. View all Topics. Add to Mendeley.Here we present geochemical, stratigraphic and palaeolatitudinal data from the carbonate platforms drilled during ODP Legs 143 and 144. Based on the stable-isotope geochemistry of calcite cements ...The geology overlaid on the decorrelated image of Landsat TM spectral bands (7, 5, 4) exhibits occurrence of the sedimentary cover in reddish yellow, Arabian Carbonate Platform in pink, ophiolites ...Distribution of facies on carbonate platforms; rimmed vs. unrimmed platforms; cross-bedded shoal facies; autocyclic and allocyclic models for genesis of mete...The exploration area of Ordovician carbonate platform in eastern Tarim Basin may exceed 12000 km 2 (Fig. 1). The total resource of Shunnan limestone and Gucheng dolomite is up to hundreds of billions in cubic meters. And it is an important realistic field of gas exploration. Fracture-cave limestone reservoir in Shunnan had obvious seismic ...Lower-Middle Ordovician platform carbonates are important oil and gas reservoir rocks in the Ordos Basin of the North China craton (NCC). In recent years, numerous cores have been recovered from these units, but the depositional environments and facies architecture of this large carbonate platform system have not yet been reported in detail.This study presented recently reprocessed multi-channel seismic data and multi-beam bathymetric map to reveal the geomorphology and stratigraphic architecture of the Yongle isolated carbonate platform in the Xisha Archipelago, northwestern South China Sea. Our results show that the upper slope angles of Yongle carbonate platform exceed 10° and even reach to ∼32.5° whereas the lower slope ...Six types of carbonate platform marginal slope have been identified in the Cambrian-Ordovician of Tarim Basin. These include a progradational carbonate ramp platform, a progradational carbonate rimmed platform, an aggradational rimmed carbonate platform, a retrogradational rimmed carbonate platform, an aggradational margin on an isolated carbonate platform and a retrogradational margin on a ...The buildup morphology and seismic facies are linked to core facies that can help to uncover the complex development of the carbonate platform. Core-seismic calibration was used to create maps illustrating carbonate depositional settings for each stratigraphic unit.These carbonate platforms, with their irregular geometry and their internal architectures are similar to those of the Great Bahamas Bank (Eberli and Ginsburg, 1989) and the Mesozoic Maiella platform (Eberli et al., 1993). Thus, the latter displays two-stage evolution from aggradation to progradation geometry that provides analogs for platforms ...Other isolated carbonate platforms such as the Bahamas, the Maldives, or the platforms off northeastern Australia also record this episode of high Pliocene eustatic sea level (Eberli and Ginsburg ...May 1, 2018 · Many biotic carbonate platforms of the northern hemisphere western Tethys drowned or shifted to non-skeletal platforms during the early Toarcian. However, southern hemisphere records of Toarcian carbonate platforms are rare, and thus the extent and significance of biotic platform demise during the T-OAE is unclear. Standard carbonate facies models are widely used to interpret paleoenvironments, but they do not address how carbonate platforms are affected by relative changes in sea level. An understanding of how the subtidal carbonate "factory" responds to relative sea-level changes and the role played by other environmental factors towards influencing the ...Carbonate Platform; Carbonate Ramp; Shelf Carbonate; These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves. Download chapter PDF Basics: Classification of carbonate environments and obligatory reading. ...Most carbonate sediments originate on a shallow-water platform, shelf, or ramp and are transported landward and basinward. "Platform" is a general term for the shallow-water environment, whereas "shelf" and "ramp" refer to topography—shelves with flat platform tops and steep foreslopes and ramps having gently dipping platform tops and ...Jun 12, 2020 · Carbonate Platforms. Examples of hidden mechanisms that modulate CO 2 outgassing are carbonate platforms, seen in the video above. These carbonate reservoirs—formed through eons of carbonate ... The carbonate platforms from the Yadana area are thus a representative example of the interplay between global mechanisms and local paleoenvironmental parameters on carbonate platform initiation ...One singularity of carbonate platforms is that they can drown, that is, the platform top can be submerged below the photic zone; in that case, the platform cannot catch up to sea-level and the carbonate production is irreversibly shut down (Schlager, 1981, Schlager, 1999a, Schlager, 1999b, Hallock and Schlager, 1986). The geometry and facies of ...The reason for the very large size of some carbonate reservoirs is not surprising when one considers the sheer scale of even modern-day carbonate settings. The shallow submerged platform area of the Bahamas extends more than 400 km (248 mi) north–south and covers an area of about 125,000 km 2 (48,263 mi 2).The Lansdowne Bank is a partly drowned, isolated carbonate platform of around 4000 km 2 located 300 km west of New Caledonia, in the SW Pacific Ocean, in water depths of 20 to 100 m. New multibeam bathymetric data, high resolution seismic reflection profiles and sediment gravity cores have been acquired on the bank top and adjacent slopes. This dataset reveals an almost continuous 4 km wide ...The Xisha carbonate platforms initiated on a basement high, the Xisha Uplift, in the early Miocene and have remained active to the present. Their distribution is limited to pre-existing localized ...Summary The varied depositional settings in which carbonate accumulate have become better known largely through the exploration for more hydrocarbon reserves and their exploitation in the last 35 years. Though reefs and grainstone shoals have been cited as common hydrocarbon exploration targets and so have been more intensively examined, other carbonate facies from both basin and/or platform ...A sedimentary model of carbonate ramp (gently inclined slope) and rimmed platform of Callovian-Oxfordian Stage in Amu Darya Basin (Reference [8,16]). 1 Concept ...B. Retrogradation of carbonate platforms during earliest middle Miocene on the western Xisha carbonate platform. Carbonate production failed to keep pace with acceleration in the rate of relative sea-level rise in slope environments. Carbonate platforms retreated toward topography highs and the area of carbonate platform growth shrank. C.A carbonate platform is a sedimentary body which possesses topographic relief, and is composed of autochthonic calcareous deposits. [1] Platform growth is mediated by sessile organisms whose skeletons build up the reef or by organisms (usually microbes) which induce carbonate precipitation through their metabolism.Most of these carbonate platforms are located nearshore or around the shelf break of the South China Sea continental shelf, and only very few offshore carbonate platforms detached from continent have been explored. Located northwest offshore of Borneo and Palawan, the Dangerous Grounds is a continental slope area characterized by large amounts ...The oolitic shoal reservoirs of the Lower Triassic Feixianguan Formation carbonates in the Sichuan Basin of southwest China are an important target for gas exploration in the basin. Their occurrence, like other cases worldwide, can be divided into two locations in general, i.e., platform interior and platform margin locations. Their differences of reservoir features and origins, however, have ...II) Platform and shelf carbonates A. Carbonate depositon mostly on platforms B. Carbonate platform is defined as: 1."a large edifice formed by the accumulation of sediment in an area of subsidence" C. Examples: rimmed platform, isolated platform, ramp. III. Platform Characteristics A. Most platforms: 1. have a flat top 2. steep sides 3. can be ...Carbonate platform drowning, i.e. the sudden to gradual demise of a shallow-water carbonate factory, is common in the geological record. Eustatic sea-level changes, variations in subsidence rates and environmental effects have been identified as controlling factors for such a development (Schlager, 2005 ).. Carbonate platform's morphology also strongly influenced by hydThe studied samples from the drill-core of Site 1003A, Modern seismic data have become an essential toolkit for studying carbonate platforms and reservoirs in impressive detail. Whilst driven primarily by oil and gas exploration and development, data sharing and collaboration are delivering fundamental geological knowledge on carbonate systems, revealing platform geomorphologies and how their evolution on millennial time scales, as well as ...The Apulia Carbonate Platform (ACP) is one of the most extensive isolated carbonate domains of the Tethyan Ocean, which persisted for a long span of time (Triassic to Miocene). The Late Jurassic ... carbonate s. When this climate is arid then high rates of evaporati The Late Jurassic extensional regime from the Neotethyan area favoured the development of a complex system of carbonate platforms (Missoni and Gawlick 2011).In this context, shallow-water carbonates were accumulating during Jurassic, on a large crustal block belonging to the Dacia Mega Unit (Schmid et al. 2008).Corpus of Carbonate Platforms with Lexical Annotations for Named Entity Recognition. Zhichen Hu 1, Huali Ren 2, Jielin Jiang 1, Yan Cui 4, Xiumian Hu 3, Xiaolong Xu 1,*. 1 School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing, 210044, China 2 Institution of Artificial Intelligence and Blockchain, … Other isolated carbonate platforms such a...

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