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 platforms and reefs emerge, grow and die in response to intrinsic and extrinsic mechanisms forced primarily by tectonics, oceanography, climate, ecology and eustasy. These mechanisms, or controls, create the physical, biological and chemical signals accountable for the myriad of carbonate depositional responses that, together, form ...The eastern Tarim Basin (Tadong Area) has gained wide attentions on large-scale marine carbonate reservoirs in Cambrian-Ordovician due to significant hydrocarbon discoveries. A systematic analysis combining thin sections, cores, wireline logs, and seismic data is conducted on Cambrian-Ordovician carbonate platform in the whole eastern …Marine carbonate burial represents the largest long-term carbon sink at Earth's surface, occurring in both deep-sea (pelagic) environments and shallower waters along continental margins. ... (1988), taken as the sum of their estimates for carbonate platform and slope-rise systems and adjusted to alkalinity equivalents. (D) Global sea-level ...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 ...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 Pine Island Shale records carbonate platform biologic community collapse and drowning associated with the combined effects of ocean anoxic event (OAE) 1A and transgression in the early Aptian ...Carbonate platforms are large-scale sedimentary bodies resulting from photosynthetically controlled biomineralisation by biological communities in the shallow water of the Tropical latitudes (Michel et al. 2019). The most significant present-day examples are the land-attached Florida Platform or the Australian Great Barrier Reef, or the ...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 ...Carbonate platforms developed in the southwestern Provence area during the late Cretaceous on the rims of a narrow deep E-W oriented basin. The upper Cenomanian lower Member Fontblanche 1 of the Fontblanche Limestones Formation is exceptionally rich in rudists. This member is well exposed in two quarries with flat outcrop surfaces, thanks to ...Submarine sinkholes are found on carbonate platforms around the world. They are thought to form and grow when groundwater interactions generate conditions corrosive to carbonate minerals. Because their morphology can restrict mixing and water exchange, the effects of biogeochemical processes can accumulate such that the sinkhole water properties considerably diverge from the surrounding ocean ...The aim of the present study is to use REE and other trace elements to explore palaeoenvironmental signatures associated with the formation of a stromatolitic carbonate platform in the 3.45 billion year old Strelley Pool Formation, Pilbara Craton, Western Australia.Carbonate platforms show high-amplitude continuous reflection at the top and high reflection alternative with weak reflection. The above analysis provided information about the influence of ...Microfacies types are essential indicators of carbonate platform's sedimentary facies (Wilson, 1975;Flügel, 2010; Zhang et al., 2020). In carbonate rocks, the texture of rocks is widely ...Carbonate platform and reservoir strata are ver y susceptible to dissolution that can create sei smic . scale features such as palaeokarst. The seismic expr essions of epikarst have been studied ...Jan 1, 2000 · Carbonate platforms are open systems with natural boundaries in space and time. Across their spatial boundaries there are fluxes of energy (e.g. light, chemical energy in compounds, and kinetic energy in currents and mass flows) and matter (e.g. nutrients, dissolved gases such as CO 2, and sediment - especially, of course, carbonates). Abstract Isolated carbonate platforms (ICPs) are spectacular features of Mediterranean geology. There has been a resurgence of interest in the resource potential of ICPs in the region following recent exploration success in this play in the eastern Mediterranean. These features have developed in the context of the geologic evolution of the Mediterranean region over the last 250 million years ...The study area is located in the Interior Fars Province, one of the six subdivisions of ZFTB, southwestern Iran and northeastern part of the Arabian Plate (see Alavi 2004, 2007) (Fig. 1).During the Middle Cretaceous, this part of the Arabian Plate was a widespread shallow carbonate platform with some intra-shelf basins on the …The Adriatic Carbonate Platform (AdCP) is one of the largest Mesozoic carbonate platforms of the Perimediterranean region. Its deposits comprise a major part of the entire carbonate succession of ...Microfacies types are essential indicators of carbonate platform's sedimentary facies (Wilson, 1975;Flügel, 2010; Zhang et al., 2020). In carbonate rocks, the texture of rocks is widely ...The carbonate platform depositional system is sensitive to many variables, a number of which are interrelated, making it difficult to clarify how each variable affects the growth pattern of a carbonate platform. A simple computer model that simulates the carbonate platform depositional system provides an efficient means of overcoming this problem.8/13/2019 Carbonate Platforms 1/47Carbonate Platforms8/13/2019 Carbonate Platforms 2/47I. Intro1. Limestones are biochemicalrocks2. Composed of CaCO31. Calcite, Aragonite3.…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 ...The Red Lake-Wallace Lake carbonate platform in Superior Province of north-western Ontario has only been the subject of an overview by Hofmann et al. . It is the oldest known thick carbonate platform and is exposed in wave washed outcrops on the shores of Red and Wallace Lakes (Fig. 1).In contrast, Proterozoic and Phanerozoic carbonate platforms are typically 100s of meters thick and many kilometers in extent. The oldest limestone-dolostone sequences with these dimensions are ~ 2.78-2.94 Ga in age. One of the thickest and best-preserved of these is the ~ 2.8 Ga old limestone at Steep Rock Lake in Northwestern Ontario.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:Abstract Isolated carbonate platforms (ICPs) are spectacular features of Mediterranean geology. There has been a resurgence of interest in the resource potential of ICPs in the region following recent exploration success in this play in the eastern Mediterranean. These features have developed in the context of the geologic evolution of the Mediterranean region over the last 250 million years ...Based on high-resolution seismic and well datasets, this paper examines the evolution and drowning history of a Paleocene-Eocene carbonate platform in the Offshore Indus Basin of Pakistan. This study uses the internal seismic architecture, well log data as well as the microfauna to reconstruct factors that governed the carbonate platform growth and demise. Carbonates dominated by larger ...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 ).aspect of carbonate platforms is the predomi- nant role of organisms in producing, processing and/or trapping carbonate sediment, even in Precambrian examples. …The Serpukhovian carbonate succession exposed along the Ushozen river has been selected for the study because it includes cycles with a variety of carbonate lithologies. Therefore, it provides a valuable opportunity to investigate seawater dynamics on an ancient carbonate platform and their relationship with the cyclic sedimentary record.The Xisha Islands are located on the northwestern continental slope of the South China Sea (SCS), adjacent to the continental shelf of Hainan Island in the northwest, the Xisha Trough in the north, the northwestern sub-basin of SCS in the east, and the Zhongsha Trough in the southeast (Fig. 1).The Xisha Islands are isolated carbonate platforms located around 190 km from the continental shelf ...The variations of lithostratigraphy, foraminifera, geochemical elements, and organic biomarkers in well XK1 from the Xisha (Paracel) Islands reveal the history of carbonate platform development since the early Miocene in the South China Sea. Our results indicate that reef growth was more active in the middle Miocene than in any earlier periods, decreased in the late Miocene, revitalized in the ...Carbonate platforms are mainly distributed in tropical and subtropical low-latitude ocean shallow water areas, and their growth and development are very sensitive to environmental changes, such as water depth, temperature, waves, salinity, dissolved oxygen, sediment and nutrients [1,2,3,4].Changes in any of these controlling factors may …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 ...During the Late Jurassic-Early Cretaceous, a complex system of carbonate platforms, named by Patrulius as the Getic Carbonate Platform, was developed within the intra-Neotethyan carbonate factory at the present time represented by numerous calcareous deposits structurally belonging to the sedimentary cover of the Getic Nappe of the Southern Carpathians (Patrulius 1969, 1976; Săndulescu 1984).Shallow-water carbonate platforms with high sedimentation rates and abundant biota are crucial to understanding the environmental and ecological changes associated with the PETM. Carbonate platforms grown all along the borders of the Tethys Ocean, which was an extensive east–west subtropical seaway during the Paleogene, offer a wide variety ...aspect of carbonate platforms is the predomi- nant role of organisms in producing, processing and/or trapping carbonate sediment, even in Precambrian examples. …Chattian carbonate platform is composed of a high variety of carbonate producing (Stages I, II, and III), representing a fore-Stepping stacking pattern. Aquitanian Carbonate Platform is a soft-grained carbonate ramp with a low-angle gradient comprising two different Stages: IV and V. The Burdigalian platform (Stage VI) is composed of meters to ...Variations in ichnological features along a proximal‒distal transect within carbonate platforms such as the studied Tirgan ramp, were triggered by changes in different physical, chemical and biological parameters. Variable sedimentary processes, e.g., wave- and tide-dominated hydrodynamic regime and influx of the fresh water from the …Carbonate platforms of extensional margins may be grouped into several major categories. Homoclinal ramps have gentle slopes into deep water, may have skeletal or ooid/pellet sand shoal complexes, that grade without break in slope into deep-ramp nodular limestone, and then into pelagic/hemipelagic basin facies they generally lack significant slump and sediment gravity flow deposits in the ...Comparisons between Central Luconia carbonates and age-equivalent carbonate platforms elsewhere in East Natuna Basin showed that Central Luconia carbonate platforms were drowned earlier (latest late Miocene time) than East Natuna carbonate platforms (Early Pliocene time).The carbonate platforms in the continental rifting lacustrine environment, in the Early Cretaceous of the Campos and Santos Basin, Brazil, is a result of the breakup of the Gondwana and continuous ...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 ...Our results further suggest that the Yongle carbonate platform is situated upon a pre-existing fault-bounded block with a flat pre-Cenozoic basement rather than a large scale volcano as previously ...These vertical variations are explained and demonstrated by the depositional model proposed by Al-Qayim and Rashid, (2012) for the evolution of the Qamchuqa carbonate platform and its relation to ...Five main tectonic phases previously proposed were recognized: (1) Late Triassic–Jurassic rifting between South and North America that led to the formation of the proto-Caribbean plate; this event is interpreted as half grabens controlled by fault family 1 as the east-northeast–south-southwest–striking faults; (2) Middle–Late Jurassic ...Microfacies types are essential indicators of carbonate platform's sedimentary facies (Wilson, 1975;Flügel, 2010; Zhang et al., 2020). In carbonate rocks, the texture of rocks is widely ...Platforms. Carbonate platforms are areas of shallow submarine accumulation of carbonate sediment that vary based on several factors: sediment production, sediment supply/proximity to a continental landmass, existing topography, sea level oscillations, and ramp morphology/slope (Harris, 1986; Fig. 1). Carbonate ramps are very low angle slopes.Many isolated carbonate platforms are found in this area, providing mass-wasting materials as a sediment source for MTDs. The MTDs in the study area were divided into three types (slide, slump ...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).The set of units determines the type of section. Three types of sections are distinguished in domanicoid deposits, corresponding to different paleostructural zones of their accumulation: the intrashelf basin, the slope of the intrashelf basin, and the shelf of the carbonate platform.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.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 ...Furthermore, the restricted platform is located at the landward region of carbonate bank (Fig. 2). Here, seawater is restricted, thus causing a reducing and quiet environment, and contacts with ...The model was designed to simulate diagenesis in shallow carbonate platform environments, from which most constraints in modern or Recent carbonate sediments are derived. In contrast, carbonate sediments in pelagic environments that are dominated by planktonic calcite may exhibit different initial compositions and diagenetic parameters (i.e ...The Shanganning Carbonate Platform (SCP) of the North China Craton (NCC) was located in the Trade Winds belt during the Cambrian, which influenced its facies development. In recent years, numerous drillcores have been recovered from these units, but the depositional environments and facies architecture of this large (~2.0 × 10 5 km 2 ...Epting, 1980, Epting, 1989 suggests that the overall architecture of the carbonate platforms is determined by four major processes, namely: (i) the rate of skeletal carbonate production, (ii) subsidence, (iii) relative sea-level fluctuation and (iv) the supply of clastic material from the Borneo deltas. Epting, 1980, Epting, 1989 concluded that the termination of the platform was caused by sea ...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, …Carbonate rock aquifers in Paleozoic rocks are flatlying to gently folded in places. Folded and faulted carbonate-rock aquifers are in the Appalachian and Rocky Mountain chains. The carbonate-rock aquifers that underlie Florida and adjacent states are called platform carbonates, and have intergranular porosity as well as large solution openings.Carbonate Platform Geometry : Factory matters little. Carbonate Production Rate (mky-1) Water depth (m) 0 20 50 100. Sealevel. Sealevel • No transport = flat top platform • Platform top at 20m water depth • High transport = ramp • No accumulation in less than 20m water depth ProductionApr 1, 2021 · 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 ... 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 margins are sensitive to changes in sea level, climate, productivity, tectonic activity and sediment input (Scott, 1993, Pomar et al., 2005, Heldt et al., 2010, Phelps et al., 2014). The successions deposited on platform margins are particularly interesting because they record the changes of carbonate platforms and their ...The company plans to start a pivotal study for OLC before the end of the year, with topline data expected in the second quarter of 2024. Unicycive added that its cash position as on June 30, 2023 ...Jun 19, 2019 · Platform carbonates are a major component of the Earth system, but their spatial distribution through geological times is difficult to reconstruct, due to the incompleteness of geological records, sampling heterogeneity, and their intrinsic complexity. Aptian-Albian palaeoenvironments explored in four sections on the Constantine platform, NE Algeria, are identified based on lithology, sedimentary structures, fossil content and microfacies. A mixed unattached carbonate platform is characterised by lagoonal-reefal facies during the Aptian and clastic-carbonate hemipelagic facies during the Albian. The vertical microfacies trend shows a ...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 ...Jan 1, 2020 · Early Proterozoic carbonate platforms are widespread and carbonate facies reveal differentiation of depositional settings strikingly similar to Phanerozoic platforms despite the absence of metazoans (Grotzinger, 1989). Two requirements are needed to create such distinction: availability of large areas with biotically favourable conditions and ... There are two types of carbonate platforms developed in the Cambrian-Ordovician in the Gucheng-Xiaotang area, namely, carbonate ramp and rimmed platforms, and the evolution process of the platform in the Gucheng area is different from that in Xiaotang area. In the Early Cambrian, the study area was a homoclinal carbonate ramp.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 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.Platforms. Carbonate platforms are areas of shallow submarine accumulation of carbonate sediment that vary based on several factors: sediment production, sediment supply/proximity to a continental landmass, existing topography, sea level oscillations, and ramp morphology/slope (Harris, 1986; Fig. 1). Carbonate ramps are very low angle slopes.The Great Bank of Guizhou (GBG), an isolated carbonate platform of Permian-Triassic age in the Nanpanjiang Basin of south China (Figs. 1 and 2), is an ideal test case for assessing and quantifying ...The carbonate platform and the drift deposits were balanced for circa 2 Myr, until a global sea-level fall at 10.6 Ma and later reflooding of the platform, which destroyed the equilibrium between both depositional systems, favouring the current-controlled deposits. The drowning of the Miocene carbonate platform of the Maldives was the result of ...The seismic patterns associated with the lacustrine carbonates of the Barra Velha Fm. are: (1) carbonate platforms on structural highs with parallel to sub-parallel reflectors; (2) carbonate build ...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 ...Carbonate platforms of extensional margins may be grouped into several major categories. Homoclinal ramps have gentle slopes into deep water, may have skeletal or ooid/pellet sand shoal complexes, that grade without break in slope into deep-ramp nodular limestone, and then into pelagic/hemipelagic basin facies they generally lack significant slump and sediment gravity flow deposits in the ...Steep-walled carbonate platforms are ubiquitous throughout Earth's history despite differences in ocean water chemistry and organic binding potential (i.e. different organisms) from the Precambrian to the modern (Grotzinger, 1989; Read, 1985).Steep-walled carbonate platforms have been documented as far back as the Precambrian, where their morphologies and development are very similar to their ...The platform originally refers to shallow water carbonate sedimentary environment with flat terrain, and the latter refers to all shallow water carbonate sedimentary environments, which can be ...Carbonate platforms are classified as either carbonate ramps or rimmed shelves. A carbonate ramp has a gently sloping surface extending seaward from the …Carbonate platform successions are exceptionally preserved in the southern border of the Amazonas Basin, northern Brazil, represented by the Pennsylvanian Itaituba Formation, previously interpreted as tidal flat, lagoon, and carbonate subtidal deposits. Microfacies and petrographic analysis of ~32 m-thick succession of core F5 allowed the ...The Miocene sedimentary successions in the northwest Gulf of Suez allow insight into the syn-rift deposition. These rocks are subdivided into three formations, namely the Sadat Formation coeval with the Gharra Formation (Early Miocene), the Hommath Formation (Middle Miocene), and the Hagul Formation (Late Miocene). The Miocene …Apr 1, 2014 · The morphology of Carbonate platforms may be influenced by tectonic activity and eustatic variations. 3D seismic data and satellite imagery are used in order to investigate the morphological similarities between present-day carbonates platforms, East of Borneo Island and Miocene carbonate platforms of the South China Sea. Carbonate platforms developed in the southwestern Provence area during the late Cretaceous o, The record of drowning of the Arabian Carbonate Platform, in the Cenomanian-Turonian Inisdere section, Adiyama, Evaluating geothermal convection during the progressive accumulation of a ca, ABSTRACT. Various types of carbonate platforms are characterized by distinctive profiles, facies, and evolutionar, To test the ocean acidification hypothesis, we have constructed a proxy record of ocean pH across th, The state of the art on the glycerol carbonate (GC) synthesis has, If the term carbonate platform is to Wilson's scheme for, The carbonate platform records the deposition of green algal grainston, We present a best-estimate forward model of a high-relief Triassic , The Shanganning Carbonate Platform (SCP) of the North C, Dec 1, 2012 · Highlights Carbonate platform paired δ 13 C carb , ٢١ شوال ١٤٣٥ هـ ... Carbonate Platforms Carbonate , The spectrum of carbonate-platform types, their heterogeneities, and, Jun 4, 2018 · 8/13/2019 Carbonate Platforms 1/47Carbo, These biotic carbonate platforms were commonly modifi, i.e., a carbonate platform corresponds to a single, Carbonate platforms in the Maldives recorded simil, Carbonate platforms and ramps comprise broad and very shallow f.