نتایج جستجو برای: carbonate ramp
تعداد نتایج: 30896 فیلتر نتایج به سال:
A total of 12 species of marine gastropods, among which two taxa are new, is reported for the first time from the Miocene deposits of Khavich section, south of Sirjan, Kerman. Gastropods assemblage in Khavich area indicates deposition in shallow, warm ramp-type carbonate platform. The Miocene and even Oligocene gastropod assemblages, relatively similar to Khavich section, reported from the othe...
tirgan formation with lower cretaceous age (barremian-aptian) in the kopet-dagh basin consists of carbonate and siliciclastic rocks (calcareous shale and sandstone) which conformably lay between siliciclastic rocks of shurijeh formation below, and marly sarcheshmeh formation at the top. in this study, tirgan formation in two stratigraphic sections of abgarm (77 m in thickness) and sirzar (46 m ...
the sorkh shale formation (lower triassic) crops out in parts of tabas block. this formation is composed of limestone, dolomite, sandstone, shale and gypsum. its lower contact with the permian rocks and its upper contact with the shotori formation is marked by distinct erosional unconformity. to determine the depositional environments of the sorkh shale formation, stratigraphic sections of goda...
The occurrence of power law relationships in the spatial distribution of sedimentary lithotopes has been identified in both modern and ancient carbonate depositional bodies. In this study, facies patterns and their spatial relationships are investigated quantitatively in an Arabian Gulf shallow subtidal carbonate ramp setting, using a synergy of IKONOS satellite imagery and vessel-based acousti...
Bulk carbon and oxygen stable isotopes of ancient shallow-marine carbonates can record the effects multiple palaeoenvironmental factors, but also imprint several post-depositional processes, which may alter original marine isotopic composition. In this study, isotope analyses were performed on bulk carbonate, bivalve calcitic-shell (Trichites) calcite vein samples from two stratigraphic section...
carbonate successions of the sarvak formation (late albian? to mid-turonian) together with the carbonate of the ilam formation formed the second important hydrocarbon reservoirs in sw iran and persian gulf. facies analyses were carried out on the upper parts of the sarvak formation in western part of the ahwaz oilfield (az-63 well) to interpret depositional environment. lithologically, the uppe...
چکیده ندارد.
The Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma) was one of the major global deep-time hyperthermal events past. Studies shallow-marine PETM records are crucial to understand continental hydrological response current warming. This study presents first detailed documentation in Xigaze forearc basin located along northern active margin eastern Tethys Ocean, and illustrates associated environme...
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