Carbonate platform.
Carbonates can form in many different types of depositional settings including basin and slope, reefs, and carbonate platforms. Carbonate platforms occur when there is a low input of detritus and clastic supply with shallow marine water. There are many types of carbonate platforms including ramp, rimmed and isolated platforms (Nichols, 2009).
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 ...For example, in the Malampaya carbonate buildup (offshore Palawan), various stages of platform backstep are evidenced during the whole early Miocene interval and the 300 meter-thick carbonate succession consists exclusively of very shallow-water (euphotic) facies interrupted by repeated subaerial exposure surfaces (Fournier et al., 2005). A ...an isolated platform developed on the shoulder of the oblique fault block. The Luconia carbonate platform in the Zengmu Basin began to develop in the Early Miocene. After the Miocene, the carbonate platform in the northern part of the Nankang Platform continued to develop, while most of the carbonate platform in the south was covered by progressiveThree carbonate production factories defined by W Schlager - Tropical factory (warm. photic zone), Cool Water and Mud Mound factories. ... Abiotic and biotically mediated precipitation is a significant component of the Tropical Factory - ooid shoals form platform-wide subaqueous bars and dunes, and whitings form extensive blankets of lime mud ...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.
One of the main controls on carbonate platform geometry and facies distribution is the tectonic setting, which influences the subsidence rate, accommodation space, uplift, and basin configuration.Palynology therefore appears to be a sensitive indicator of short-term (4th-order) sea-level change on carbonate platforms. Dinoflagellate concentrations correlate positively with carbonate compaction, and infer that compacted layers have undergone dissolution of their metastable constituents. Dinoflagellate concentrations therefore can be ...Carbonate platforms are characterized in terms of geometry, stratigraphic architecture, time duration, preservation rate, progradation and rates of progradation, platform type, and thickness ...
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 Mascarene Plateau is an isolated carbonate platform in the Western Indian Ocean (Fig. 1A). It extends from the Seychelles (4°S) to Mauritius (20°S), and with an area of 104 510 km 2 is the second largest carbonate platform of the world.Simulations suggest that geothermal convection will dolomitise carbonate platform sediments irrespective of boundary conditions, although reactions are slower in smaller and/or isolated platforms where advective cooling is greater than in larger and/or attached platforms (Whitaker & Xiao, 2010). This study also illustrated the widely recognised ...Controls on Neogene carbonate facies and stratigraphic architecture of an isolated carbonate platform-the Caribbean island of Bonaire. Mar. Petrol. Geol. (2018) J.C. Laya et al. Dolomitization of a Miocene-Pliocene progradational carbonate platform by mesohaline brines: Re-examination of the reflux model on Bonaire Island.Carbonate platforms contains contributions from an international authorship and the volume has been edited by one of the most respected names in the earth sciences. Areas covered include; early rifting deposition; examples from carbonate sequences of Sardinia (Cambrian) and Tuscany (Triassic-Jurassic), Italy; geometry and evolution of platform ...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 ...
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.
A carbonate platform is a sedimentary body which possesses topographic relief, and is composed of autochthonic calcareous deposits. 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. Therefore, carbonate platforms ...
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.Carbonate platform architecture and carbon isotope stratigraphy from the neoproterozoic Narji limestone formation, Kurnool Group, India: Decoding clues of …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 …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 ...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 Lithiotis bivalves as well as other benthic organisms (Trecalli et al., 2012; Sabatino et al., 2013; Han et al., 2018; Jiang et al., 2020; Krencker et al ...Apr 1, 2005 · Carbonate platforms are characterized in terms of geometry, stratigraphic architecture, time duration, preservation rate, progradation and rates of progradation, platform type, and thickness ...
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 research indicates that the carbonate platform evolved from arid and semiarid ramps, restricted platform and dolomitic tidal flat (CS1) to the open and rimmed platform margins (CS2) and eventually was drowned at the end of the Middle Ordovician. The sea-level changes have been studied using the Fischer plot method, showing two sets of long ...The geometry of carbonate platforms reflects the interaction of several factors. However, the impact of carbonate producing organisms has been poorly investigated so far. This study applies ...The post-volcanic carbonate platform (Fig. 12) is mainly consisting in slope facies, with a dip angle locally decreasing with respect to the pre-volcanic slope, and a narrow (about 40 m), bio-constructed margin belt. Inner platform succession has a mean thickness of 50 m and pinches out toward the margin belt. In the basin, a pelagic ...The focal point of this study is the late Oligocene-Miocene rimmed carbonate platform, which developed above an Eocene-early Oligocene carbonate ramp. At depth, a passive-margin sequence buries the rift-related topography. A gap in the seismic data (see the western portion of the survey) is due to the presence of the shallow-water ...
The Triassic/Jurassic boundary section cropping out at Mt Sparagio in north-western Sicily (Italy) consists of a thick and continuous peritidal succession typical of a Tethyan carbonate platform. The combined chemostratigraphic and biostratigraphic study of this section allowed us to parallel the environmental variations inferred by the isotopic records and the extinction trends recorded by ...
The Middle Triassic shelf was characterised by pronounced temporal and spatial changes in carbonate facies and thickness, resulting into a diachronous carbonate platform (Brandner and Resch, 1981 ...The carbonate platform maps from Kiessling et al. were georeferenced and reprojected into geographic coordinates, and using GPlates, the geometries were forward-rotated into present-day geometries - allowing the platforms to be connected to any plate tectonic reconstruction (Figure 2) (Supporting Information 1.3). Given that carbonate ...The newly collected seismic data and the existing drilling data provide a good opportunity to better understand the carbonate platform distribution characteristics and the hydrocarbon resource potential in the Xisha sea area of the South China Sea. Based on the seismic data and the reflection characteristics of the carbonate platform’s edge, three boundary indicators were established: abrupt ...Carbonate platform morphology is a first order control on the magnitude and orientations of stresses in the subsurface. Scallops and promontories present on carbonate margins preferentially concentrate stresses, highlighting potential fracture sweet spots.CARBONATE AND CO 2 BUDGETS. We quantify how much CO 2 returns to the lithosphere in the upper plate by solid-state diapirism versus the amount of carbonate lost to the forearc and the fraction that is delivered to the deeper mantle along the subduction plane. A large fraction, ~35%, remains in the forearc; ~10% descends deeper into the mantle.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 ...This trip seeks to illustrate the succession of Cambrian and Ordovician facies deposited within the Pennsylvania and Maryland portion of the Great American Carbonate Bank. From the Early Cambrian (Dyeran) through Late Ordovician (Turinan), the Laurentian paleocontinent was rimmed by an extensive carbonate platform. During this protracted period of time, a succession of carbonate rock, more than tw
Carbonates of Central Luconia, Malaysia, had been serving as hydrocarbon reservoirs for more than 25 years. However, the relationship and impacts of extensive tectonic events to the growth of Miocene carbonates in Central Luconia have not been revealed sufficiently. In this work, two carbonates platforms in the southern part of Central Luconia were used for detailed interpretation and seismic ...
Correlation of these facies associations in a sequence stratigraphic framework suggests that the Infra Krol Formation and Krol Group represent a north‐ to north‐west‐facing platform with a morphology that evolved from a siliciclastic ramp, to carbonate ramp, to peritidal rimmed shelf and, finally, to open shelf.
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 ...The group of satellite images above show several small eddies swirling out from shallow waters along the Little Bahama Bank's carbonate platform. Similar swirls in the world's oceans are sometimes colored by large concentrations of certain types of phytoplankton —microscopic plant-like organisms that in abundance can discolor water and be ...With a similar aim, Masiero et al. (2021) integrate two forward models to explore how carbonate platforms develop in and respond to synrift tectonic settings. One is a novel 3D stratigraphic ...Carbonate platforms of the Western Tethys Ocean exposed in Alpine Tethyan mountain ranges today offer insight into this period of environmental upheaval. In addition to informing understanding of ...Carbon is found in the sun and other stars formed from the debris of a previous supernova. Carbon is built up by nuclear fusion in bigger stars. Carbon exists in the atmospheres of many planets, usually as carbon dioxide.We wanted to encapsulate different carbonate platform characteristics and reservoir flow unit behaviours for various geomodelling and reservoir simulation studies. We used fully anonymised data from 43 wells from several fields belonging to different depositional settings and heights above the FWL within an area of 36 000 km 2. The data ...Carbonate and evaporitic sediments are intimately related in platform settings where evaporites are located in the relatively more restricted platform areas which appears in lateral interbedding and vertical circularity (Figs. 6, 7). Carbonates and evaporites are commonly lateral equivalents, both in carbonate-dominated environments or within ...The Shuntuoguole Low Uplift is located in the slope-shelf facies area and developed slope facies source rocks. A carbonate platform was widely developed in Tazhong area during Early-Middle Ordovician. During the Late Ordovician, the platform basins in Tazhong area were differentiated, and the Katake Uplift continued to elevate.Palynology therefore appears to be a sensitive indicator of short-term (4th-order) sea-level change on carbonate platforms. Dinoflagellate concentrations correlate positively with carbonate compaction, and infer that compacted layers have undergone dissolution of their metastable constituents. Dinoflagellate concentrations therefore 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 ).
Evaluating geothermal convection during the progressive accumulation of a carbonate platform, even with a relatively low-temporal resolution, shows dramatic differences in predicted quantity and distribution of dolomite (compare Figures 5 and 6). Platform growth affects the distribution of geothermal dolomite in two important ways.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 and evaporitic sediments are intimately related in platform settings where evaporites are located in the relatively more restricted platform areas which appears in lateral interbedding and vertical circularity (Figs. 6, 7). Carbonates and evaporites are commonly lateral equivalents, both in carbonate-dominated environments or within ...Instagram:https://instagram. austim reevesdis coursezillow 85021stove top protector liners The chapter ends with a corollary discussing (1) the interaction between factories (promotion vs suffocation), (2) the types of responses of carbonate platforms to external changes (linear vs nonlinear), (3) the uses and misuses of skeletal sediment associations and (4) the obstinate misuse of the sequence stratigraphic concepts in carbonate sys...Carbonate platforms first appeared during the early Miocene on fault-bounded blocks that had developed from the Eocene to the Oligocene within the NE-striking Xisha Uplift continental fragment. Most of the platforms were drowned in the late Miocene (Fig. 4) and then covered by Miocene-Pleistocene marine deposits characterized by mid- to low ... letters to the editorsstrip mining coal The papers presented here provide an integrated view of carbonate platforms, emphasizing dynamic interactions at all hierarchical levels and revealing the limitations of uniformitarian analogy in biotically influenced sedimentary systems.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. gale sayers Evaluating geothermal convection during the progressive accumulation of a carbonate platform, even with a relatively low-temporal resolution, shows dramatic differences in predicted quantity and distribution of dolomite (compare Figures 5 and 6). Platform growth affects the distribution of geothermal dolomite in two important ways.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 ...Carbonate platform architecture through Oligo-Miocene is the most important goal of this study; which was achieved by a combination of biostratigraphy, cyclostratigraphy, and facies analysis. Biostratigraphy of carbonate successions is based on spatial and temporal distribution of key large benthic foraminifera; which assigned carbonate ...