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Coastal erosion is increasing worldwide due to the increasing frequency of extreme natural phenomena and excessive human exploitation. In this study, a small model experiment was conducted to investigate the …
Deposition of molasse sediments as a result of the Himalayan orogeny caused variations in the sedimentation influx in the Potwar Basin of Pakistan throughout the Neogene times. The basic idea …
Principles of Carbonate Sedimentation James L. Wilson Chapter 903 Accesses 23 Citations Part of the Springer Study Edition book series (SSE) Abstract Most, though not …
Recently, most of the studies on the mixed clastic-carbonate succession are related to the depositional environment but the sequence stratigraphic characteristic of the mixed clastic-carbonate succession is rarely reported (Lubeseder S et al., 2009; Sun JP et al., 2014; Bai HQ et al., 2020).In this paper, we analyze the sedimentology and sequence …
Currently, shallow-water carbonate sedimentation in the PRMB, is only active around the Dongsha Island. 3. Data and methods. The data used in this study comprise two 2D long seismic lines (LSLs), high-resolution 3D seismic data, well-logging data and petrographic data from thin sections of cores from industrial wells.
In this study, spectra of 30 XRF-scanned marine sediment cores, including published and unpublished records, together with their corresponding bulk chemistry measurements were examined (in total ...
The carbonate factories model, as defined at the beginning of the century, provides a subdivision of marine carbonate sediment production-systems based on the style of carbonate precipitation. ... The P-factory provides biotic grains to all environments and at times, like for the Cretaceous, may dominate sedimentation patterns in the basin ...
A method of quantitative sequence stratigraphy based on stratigraphic forward modeling is tested on carbonate sedimentary systems (CSSs), especially on …
the seawater carbonate system, which could have a significant impact on carbonate-rich sediments. Coral reef limestone is a special biogenic carbonate, which is mainly composed of calcium carbonate.
Of the many published seismic images and studies of carbonate platforms in the past ~ 10 - 15 years, many have been focused on the Neogene of SE Asia an d include some excellent detailed analyses of
In this study, most of the samples have Z values greater than 120, except for KH-13 and KH-15 (which have values less than 120 but near it), which indicates that the carbonate rocks in the region ...
In this study, manned submersible observations, sampling, and high-resolution acoustic data were used to investigate a drowned isolated carbonate platform cropping out at a water depth of 536 ...
The mixed sediment content of the Lucaogou Formation is unusual due to the large amounts of tuffaceous material, which makes the system more complex than the commonly mixed siliciclastic-carbonate rocks. In this study, the volcanic material acts as a third end-member component in a multi-source mixed sedimentary system.
Lake - Sedimentation, Erosion, Deposition: Lake sediments are comprised mainly of clastic material (sediment of clay, silt, and sand sizes), organic debris, chemical precipitates, or combinations of these. The relative abundance of each depends upon the nature of the local drainage basin, the climate, and the relative age of a lake. The sediments of a lake in a …
where is the average dry bulk density and is sedimentation rate, which is the observed thickness of a unit divided by the depositional time (difference in age between its base and top). MARs account for changes in porosity during burial, so MARs are a more useful proxy for original input at the seabed. This paper quantifies MARs in Neogene …
The background sedimentation of detrital mudrock/shale dominates deposition away from the active feeder system of ... Santosh, M. et al. Sedimentological and diagenetic study of mixed siliciclastic/carbonate sediments in the propagation stage of Gulf of Suez Rift basin, Northeastern Africa: controls on reservoir architecture and reservoir ...
Based on previ- ous understandings of our study, we examined system- atically the forming mechanisms of multi-source fine- grained carbonate materials in continental rift lake ba- sins and sorted the hydrocarbon accumulation types in carbonate-rich fine-grained sedimentary rocks in this work, in the hope to propel the discovery of …
Sedimentation was controlled by rift-generated extensional tectonics that resulted in tilting of the platform block, causing the deviation of progradation from the general trends of the Prebetic Platform. ... This paper is focussed on the study of the shallow carbonate platform of the Middle Member () of the Llopis Fm. In the Prebetic of ...
Related studies suggested that the interactions between microbial flow and transport processes in multi-spatial ... Calcium carbonate solubility product; S c, Effective specific area of sedimentation. 2.3 Summary . MICP process is a very complex bio-chemical reaction process. ... The calcium carbonate formed by low-concentration …
Water chemistry is also responsible for either the long-term preservation or potential dissolution of carbonate minerals in lake sediments ( Reimers et al., 1996 ). In this study, we evaluate the …
Rates of sedimentation are measured in three main contexts. The first is the study of sedimentation systems that are active today; the second is what has come to be known as source-to-sink study; the third is the study of the relationship between sediment accumulation rate and measurement timespan. Different measurement strategies are …
The study of modern carbonate sediments allows for the interpretation of ancient environments, as recorded in limestones. Geochemistry, petrography, and fossil …
In this study, we have focused on single-carbonate minerals within a sediment matrix. We acknowledge it is possible for geological samples to contain a mix …
By coupling the deep-sea carbonate sedimentation history to a global tectonic model, we quantify this component within the framework of a continuously evolving seafloor. A long-term increase in marine carbonate carbon flux since the mid-Cretaceous is dominated by a post-50 Ma doubling of carbonate accumulation to ∼310 Mt C/yr at …
The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions. ... He F, Lin C S, Liu J Y, Zhang Z L (2016). Carbonate rock sedimentation and its main-controlling factors in Gucheng. Special Oil Gas Reserv, 23: 17–21 (in Chinese)
Definition. Sedimentation and diagenesis are the act and process of forming sedimentary rocks distributed on the surface of Earth's crust. During sedimentation, fluid sediment composed of particles flows, deposits, and accumulates with varying degrees of sorting. The accumulating sediments forms layers and becomes buried.
The most well-developed carbonate sequence within the basin is the Cambrian-Ordovician carbonate, which is also the key intervals for oil and gas exploration [31–33]. The Ordovician carbonate reservoirs in the Shunnan (SN) area, located in the central uplift of the Tarim Basin, are selected in this study, as shown in Figure1, based on [33,34].
The carbonate inventory consists of primary (1) inorganic calcite and aragonite precipitating in the surface-water, (2) biogenic calcite ostracod valves; and post …
It is a consensus that marine carbonate archives the isotopic composition of seawater dissolved inorganic carbon (DIC, δ 13 C sw), the largest active C reservoir in the hydrosphere.Carbonate carbon isotope …
The strata mixing is referred to deposits where the two heterolithic fractions are organized in meter-to decameter-scale interbedded siliciclastic and carbonate beds and/or bedsets. Compositional and strata mixing occur at three main scales of observation – bed (core-plug), lithofacies (core/well-log) and stratigraphic (seismic) scale - (Fig. 1).
Carbonate and silicate rock weathering processes consume atmospheric CO 2, which is a net sink of the global carbon cycle [33, 34]. ... the labelled markers have also been widely used in the wetlands for the sedimentation flux measurements. Some studies have also estimated the C sedimentation rate using porosity and other estimation …
The Upper Cretaceous Sudr Formation at Wadi El Dakhl, West Gulf of Suez, Egypt, was described based on its diagenetic characteristics and sequence stratigraphy in order to enhance our ability to realize the evolution of the sedimentary basin in the study area. The diagenetic characteristics in the studied succession include the following …
The mean grain size for the carbonate sands in the study area is 0.43 mm, with minimum size of 0.13 mm and maximum size of 1.07 mm. ... Kench, P. S. Contemporary sedimentation in the Cocos ...
In this study, a simplified chemistry with well-understood behavior and inert fracture walls were used for direct visualization of carbonate precipitation and deposition in fractures with ...
The sediment rejection ability of 8 coral species of 5 families and 3 morphologies were assessed in a series of short term exposure tests over a sedimentation range of 0.5–40 mg cm − 2 d − 1 and one longer term exposure test of 235 mg cm − 2.Sediment accumulation rates on live corals and dead (enamel-covered) skeletons …
Zeng, Hongliu, and Kerans, Charles, 2003, Seismic frequency control on carbonate seismic stratigraphy: a case study of the Kingdom Abo sequence, West Texas: American Association of Petroleum Geologists Bulletin, v. 87, no. 2, p. 273-293. 2002
This study showed varying sedimentation rates in coastal and distant sediment cores. Both 210Pb and 137Cs dating techniques showed comparable sedimentation rate in most sediment cores. ... Nair, R. R., & Pylee, A. (1968). Size distribution and carbonate content of the sediments of the western shelf of India. Bulletin …
The northeastern Brazilian continental shelf has a mixed carbonate-siliciclastic sedimentation system. This study applied statistical analysis on superficial sediments to access the conditions and controls of sedimentary distribution and processes along the outer shelf depositional environment. The total of 123 grabbed sediment …
