Carbonate platform

Drowned carbonate platforms on passive margins present a paradox, because their great growth potential exceeds the typical rates of passive margin subsidence and any relative sea-level rise driven ...

Carbonate platform's morphology also strongly influenced by hydrodynamic factors (Wind and Waves). SFM has been used to test the hypothesis on factors that controlled the evolution of carbonate ...Apr 28, 2020 · Carbonate platforms in the Maldives recorded similar drift bodies and moat features with the sudden onset of intense Asian summer monsoon winds at ~12.9 Ma and a predated weaker proto-monsoon 7,8 ... carbonate s. When this climate is arid then high rates of evaporation and the deposition of evaporites (either supratidal or subaqueous) are a common response. . Karstification of exposed carbonate platforms may occur during sea level lowstand by rainfall in humid regions (James and The electric-vehicle (EV) market is estimated to grow at a 20 percent CAGR through 2030, when sales of xEVs are estimated to reach 64 million—four times the estimated EV sales volume in 2022. 1 Based on data from the McKinsey Center for Future Mobility. Ensuring the EV component supply is sufficient to meet this rapid rise in estimated demand is critical, and the supply of silicon carbide ...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 ...Carbonate platform evolution and the role of geotectonics The Cambrian through Lower Ordovician North China Carbonate Platform shows a clear pattem of evolutionary development, where six stages can be differentiated (Fig. 6). The Lower Cambrian flood- ing of the platform from the east leading to the deposition of clastics, phosphorites and some ...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.Platform flooding is the first-order prerequisite controlling platform-top sediment production and subsequent sediment export of tropical carbonate platforms (Schlager et al., 1994; Jorry et al ...

The most well known carbonate platform geometry is associated with tropical manufacturing processes, where carbonate platforms can be subdivided into three main ...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 ...Structural carbonate in the CFA and calcite cements co-occurring in partially phosphatic digitate stromatolite buildups and adjacent carbonate grainstone generally ... which support a depositional facies model of a persistently submerged, wave-swept carbonate platform environment — subtidal zone, above fair-weather wave-base (Misi and ...The term carbonate platform is both a stratigraphic term for thick deposits of shallow-water carbonate rocks, and is also used to describe the following different carbonate shelf morphologies (Fig. 4). The terms carbonate platform and carbonate shelf are often used synonymously for both modern sediments and ancient rocks formed in this environment: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.Results from petrographic evidence as well as facies analysis demonstrate that the depositional environment of Jamal Formation in the studied area (Kharu village, East Tabas) exhibits the characteristics of a homoclinal carbonate ramp platform with the gentle slope. This platform is mainly composed of tidal flat, lagoon, and shoal sub …A carbonate platform lies at depths between 60 and 90 m on the outer continental shelf off western India (figure 1).It is located off the Narmada and Tapi rivers that debouch abundant water and terrigenous sediments (Rao 1975).This platform is separated from the mainland by a huge clastic depocenter - the Dahanu depression, in which, pro-delta sediments were extensively deposited (figure 1 ...

In the Mt. Olympos region of northeastern Greece, continental margin strata and basement rocks were subducted and metamorphosed under blueschist facies conditions, and thrust over carbonate platform strata during Alpine orogenesis.aspect of carbonate platforms is the predomi- nant role of organisms in producing, processing and/or trapping carbonate sediment, even in Precambrian examples. …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 ...Published: Oct. 23, 2023 at 10:05 a.m. ET. By Chris Wack. Li-Cycle Holdings shares were down 46% at $1.23 after the company paused construction work on its Rochester Hub project in New York ...carbonate platforms than about most other sedi- mentary systems. Evolution has altered both the constructive and destructive effects of platform- dwelling organisms on carbonate fabrics, with ...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 …

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Semantic Scholar extracted view of "Great Basin Paleozoic carbonate platform; facies, facies transitions, depositional models, platform architecture, ...The Murge plateau is the central part of the thick carbonate Mesozoic sequence of the Apulian platform. It consists of a broad highland oriented in a NW-SE direction, with a saddle which divides it into the north-western Murge with a max-imum elevation of 680ma.s.l and the south-eastern Murge with a maximum elevation of about 500ma.s.l. (Boenzi andIncreased volcanism-related phosphorus delivery to the Late Ordovician ocean helps explain widespread cooling and eutrophication-driven extinctions, as shown by a biogeochemical model ...These biotic carbonate platforms were commonly modified by drowning or a shift to non-skeletal carbonates during the early Toarcian, temporally consistent with the extinction of reef-building ...We present a best-estimate forward model of a high-relief Triassic carbonate platform (Southern Alps, Italy) generated using CARB3D+, a 3D process-based forward modelling package able to simulate ...

Isolated carbonate platforms are common and contain significant hydrocarbon accumulations, particularly in the tectonically complex Sirt Basin in Libya. This study investigates the margin cyclicity of two carbonate stratigraphic sequences developed on an isolated carbonate platform in the NW Sirt Basin using 3-D post-stack seismic volume and ...Drowned carbonate platforms on passive margins present a paradox, because their great growth potential exceeds the typical rates of passive margin subsidence and any relative sea-level rise driven ...carbonate s. When this climate is arid then high rates of evaporation and the deposition of evaporites (either supratidal or subaqueous) are a common response. . Karstification of exposed carbonate platforms may occur during sea level lowstand by rainfall in humid regions (James and The isolated carbonate platform is recognized based on diagnostic criteria defined by (Burgess et al. 2013) such as a positive antecedent topography, marked stratal thickening, high angle flanks, stacking patterns, distinct reflection amplitude, and geometry, and onlaps of surrounding sediments. Middle to Late Miocene time has witnessed the ...Drowned carbonate platforms on passive margins present a paradox, because their great growth potential exceeds the typical rates of passive margin …Carbonate Reservoirs. In Developments in Sedimentology, 2001. The mature hydrologic phase: regional meteoric water systems developed during sea level lowstands. Carbonate shelves and isolated platforms generally tend to be steep sided and relatively flat topped (Chapter 2).A relative drop in sea level (eustatic fall or tectonic uplift) may lead to the …Thus, marine carbonate platforms are not randomly distributed in the world oceans, neither in the Modern, nor in the Past 9, 24. Global mapping of carbonate platforms shows indeed that...Carbonate definition, a salt or ester of carbonic acid. See more.The late Aptian Lower Serdj Formation (LSF) in the Northern Atlas of Tunisia records a mixed carbonate–siliciclastic system from the southern margin of Tethys. Sedimentological investigations of key sections in the Serdj-Bargou area along a NE–SW-platform-to-basin profile reveal five shallow-marine carbonate units (Cu1, Cu2, Cu3, Cu4a and Cu4b), dominated by subtidal deposits, separated by ...

Similar carbonate fabrics may result from different pathways of precipitation and diagenetic replacement. Distinguishing the underlying mechanisms leading to a given carbonate fabric is relevant, both in terms of an environmental and diagenetic interpretation. Prominent among carbonate fabrics are aragonite botryoids and spherulites, typically interpreted as direct seawater precipitates and ...

Dolomitization of the Middle Permian carbonate platform in South China occurred in successive phases, partially influenced by the emplacement of the Emeishan Large Igneous Province. The main ...We present here a new biostratigraphic, sedimentological and high-resolution carbonate-isotope analysis of the Campo section to reassess the PETM record, locate precisely the P/E boundary, reconstruct the environmental and sea-level changes across the PETM, and investigate hydrological changes and carbonate-platform response to the PETM abrupt ...Drowned carbonate platforms on passive margins present a paradox, because their great growth potential exceeds the typical rates of passive margin subsidence and any relative sea-level rise driven by long-term processes in the geologic record. In this study, manned submersible observations, sampling, and high-resolution acoustic data were used to investigate a drowned isolated carbonate ...1 Introduction Isolated carbonate platforms (ICPs) are common in the geologic record and constitute one of the crucial targets for petroleum exploration in mature basins ( Fyhn et al., 2013; Bashir et al., 2021; Hendry et al., 2021 ).The spectrum of carbonate-platform types, their heterogeneities, and their architecture is complex. Each platform succession has a distinctive and unique character that is a response to the ...(A) Growth history of an isolated carbonate platform in Luconia into stages reflecting variation in carbonate production, subsidence sea-level fluctuation and terrigenuos influx (Epting, 1989).The widely used morphological classification of carbonate platforms was presented nearly 30 years ago by J.L. Wilson (1975).In this classification Wilson integrated Ahr's (1973) carbonate ramp with his carbonate platform model, with major offshore banks, to provide a framework for the description and interpretation of carbonate platforms (Fig. 1). ...The Archean carbonate platform on top a major unconformity, exposing wide areas of mafic rocks of the greenstone belt, in combination with ongoing hydrothermal activity, provided sufficient amounts of micro- and macro-nutrients, perhaps with occasional P limitation, sustaining a microbial community which may be capable of fixing carbon and ...Aug 16, 2021 · The late Aptian Lower Serdj Formation (LSF) in the Northern Atlas of Tunisia records a mixed carbonate–siliciclastic system from the southern margin of Tethys. Sedimentological investigations of key sections in the Serdj-Bargou area along a NE–SW-platform-to-basin profile reveal five shallow-marine carbonate units (Cu1, Cu2, Cu3, Cu4a and Cu4b), dominated by subtidal deposits, separated by ... Carbonate platform margins may have variable architecture and constituent facies ranging from almost continuous frame-constructed barrier reefs to oolitic or bioclastic sand shoals with or without isolated patch reefs or microbial mounds (e.g., James, 1983, Fagerstrom, 1987). A variety of different margin types occurred on the Devonian ...

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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 ...Soussi, M., Zaghbib-Turki, D., Ouribane, M. and Turki, M.M. (1996) Biosedimentary characteristics of Upper Tithonian carbonate platform in Zaghouan area (NE Tunisia) An example of isolated shallow marine platform to basin translation, in International Association of Sedimentologists, Field Trips Guide Book, 17 th IAS Regional African …The most distinguishable stratigraphic sequence is the Nido carbonate sequence (Steuer et al. 2013) (Fig. 2), which is composed of the carbonate platforms in shallow marine environment. This Nido carbonate sequence is cover on top by limestones, wackestones, and packstones, deposited in an open marine of shallow shelf to bathyal …The carbonate platform studied is the Sedini Limestone Unit (Arnaud et al. 1992; Thomas and Gennesseaux 1986), situated in the Perfugas Basin.Benisek et al. present a sequence-stratigraphic subdivision of the carbonate platform succession into two depositional sequences (Fig. 3) overlying volcanics (19.5-18.9 Ma old, Beccaluva et al. 1985) and volcanoclastics together with lacustrine sediments.Drowning unconformities are carbonate platform drowning surfaces that usually produce distinct reflection horizons and have better stratigraphic value in the subsurface than platform-embedded subaerial unconformities. This discussion is supported by examples of subaerial disconformities from the Devonian, Carboniferous, and …The Segitiga Platform (1400 km 2) contains Terumbu Formation carbonate strata as much as 1800 m thick that were deposited in platform interior, reef and shoal margin, and slope to basin environments.Drowned carbonate platforms on passive margins present a paradox, because their great growth potential exceeds the typical rates of passive margin subsidence and any relative sea-level rise driven ...The Great Bahama Bank (GBB), an isolated carbonate platform that is dominated by nonskeletal sands and muds (15-17), has been at the center of the debate for over a century (8, 18-24). Broadly, there are three prevailing hypotheses for mud formation. First, carbonate mud could be formed by algae (7, 20, 25).Carbonate platform drowning events are recorded in Upper Jurassic–Lower Cretaceous carbonates of the Baltimore Canyon area, offshore United States East Coast, and lower Miocene carbonates of the Pearl River Mouth Basin, offshore People’s Republic of China. Cursory examination of seismic data from both areas would indicate that the …Carbonate platform and reservoir strata are very susceptible to dissolution that can create seismic-scale features such as palaeokarst. The seismic expressions of epikarst have been studied for a long time . Recent advances stem from reservoirs associated with major unconformities such as the Middle Ordovician in China and Texas, or the ...The Central Luconia province in the South China Sea, offshore Sarawak, features extensive development of Middle to Late Miocene isolated carbonate platforms. This study presents a regional seismic architecture - seismic facies review of platform flank geometries and off-platform depositional styles, with the goals of understanding their ...ABSTRACT The depositional organization and architecture of the middle-late Devonian Yangdi rimmed carbonate platform margin in the Guilin area of South China were related to oblique, extensional faulting in a strike-slip setting. The platform margin shows two main stages of construction in the late Givetian to Frasnian, with a bioconstructed margin evolving into a sand-shoal system. ….

Highlights Carbonate platform paired δ 13 C carb and δ 13 C org record of the early Toarcian CIE. Demise of Lithiotis/Palaeodasycladus carbonate factory at the onset of the T-OAE CIE. Palaeophysiology indicates sensitivity of hypercalcifiers to ocean acidification. Shift from biotic to chemical carbonate factory across the T-OAE. Platform …promoted the latitudinal expansion of carbonate platforms (30, 31). Coeval with high carbonate accumulation on the shelves was a proliferation (increase in relative species diversity/richness) of theand uniqueness of the platform come from abun-dant carbonate sedimentation with only <10% terrigenous material, despite its location in the proximity of major rivers. The surficial sediments on the platform comprise various type of carbonate deposits of Late Quaternary age. Rao and Wagle (1997) reviewed the genesis of authigenic, carbon-It can be related to a mid-ramp carbonate platform environment, with depth mainly below and sometimes above the fair-weather wave base (Burchette and Wright, 1992). This interval may represent the carbonate platform recovery and progradation during the sea level high stand, after the rise (Schlager, 2005; Łabaj and Pratt, 2016).The co-evolution of continental arc lengths and carbonate platforms must therefore be considered when considering arc carbon fluxes. Increased volcanic carbon outgassing fluxes are expected when continental arc lengths are longer than at the present-day, as the potential of crustal carbonate intersection is greater ( Lee et al., 2013 , 2015 ...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 ...8/13/2019 Carbonate Platforms 1/47Carbonate Platforms8/13/2019 Carbonate Platforms 2/47I. Intro1. Limestones are biochemicalrocks2. Composed of CaCO31. Calcite, Aragonite3.…Furthermore, carbonate microfacies of the Cretaceous (Aptian) carbonate platform in the Betic Cordillera and Jurassic carbonate platform in Tibet provide the data from case studies for the testing and initial validation of the proposed ontology. The carbonate ontology is under continuous expansion following the bottom-up approach and open ... Carbonate platform, [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1], [text-1-1]