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Journal of Stratigraphy and Sedimentology Researches
Scopus
ISSN 2008-7888 · University of Isfahan · 309 artikel di indeks
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Palaeobiogeographical study of the Late Ordovician brachiopods of Iran based on quantitative analysis
AbstractBrachiopods, as one of the most important benthic fauna in the Late Ordovician, show a great abundance and diversity in many continents. In this study, a quantitative approach of multivariate analyses was conducted in order to study the palaeobiogeography of the brachiopods of Iran and…
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Investigation of the productive zone and hydrocarbon characteristics of the Fahliyan reservoir using online mud gas analysis in the Yadavaran Field, Abadan Plain
AbstractOnline evaluation of gas in drilling mud provides valuable information about reservoir horizons and the type of fluid during drilling. This study investigates the productive horizons of the Fahliyan Formation reservoir in the Yadegaran Field located in the Abadan Plain using geochemical…
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Petrophysical Zonation through Integration of Well-Logging and Core Data in Carbonate Reservoirs: A Case Study from the Dalan and Kangan Formations, Central Persian Gulf
.AbstractThe Permian–Triassic carbonates of the Kangan–Dalan formations in the central Persian Gulf represent one of the largest gas reservoirs in Iran and worldwide. Integrated petrophysical–core zonation, supported by multivariate cluster analysis, was applied to reduce reservoir heterogeneity…
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Impact of the Paleocene–Eocene Thermal Maximum (PETM) on organic petrographic characteristics of the basal Pabdeh Formation at Kuh-e-Gurpi Anticline, SW Iran
AbstractThis study investigates the impact of the Paleocene–Eocene Thermal Maximum (PETM) event on the organic petrographic characteristics of the base Pabdeh Formation in the Tang-e-Hati section, located at the Kuh-e-Gurpi Anticline, SW Iran. To delineate the Paleocene–Eocene boundary, nanofossil…
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Facies analysis, depositional environments, and sequence stratigraphy of the Asmari Formation in the Chahar Bishe Oil Field, Zagros Basin, Iran
Abstract The Asmari Formation, one of the most important carbonate reservoirs in the Zagros Basin, was studied in the Chahar Bishe Oil Field to identify its facies, depositional environments, and sequence stratigraphic framework. Examination of 316 meters of core and cutting samples of a well from…
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Petrography, geochemistry, and provenance of the Aghajari Formation (North of Hoseynieh, Andimeshk, Khuzestan Province)
AbstractThe purpose of this study was to investigate the mineralogy, geochemistry, and provenance of clastic strata of the Aghajari Formation (Upper Miocene–Pliocene) in the north of Hoseynieh and Andimeshk. Petrographic studies and modal analyses of sandstones indicate that quartz, feldspar of…
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Identification of hydrocarbon fluid types through integrated drilling mud gas geochemistry and petrophysical analysis in the Dalan Reservoir
AbstractThe Dalan Formation, a major carbonate-evaporite succession in the Persian Gulf Basin, is a significant gas-bearing reservoir in fields such as South Pars. This study integrates mud gas geochemistry and petrophysical evaluation to characterize hydrocarbon fluid types and assess reservoir…
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Depositional environment evolution and biogeochemical changes across the Permian–Triassic transition in the central Persian Gulf
AbstractIn this study, the stratigraphic distribution of foraminifera and the environmental evolution of the Permian–Triassic boundary (PTB) successions in the central Persian Gulf (upper Dalan and the basal part of the Kangan formations) were investigated through the integration of…
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Reconstruction of the depositional conditions of the Eocene siliciclastic deposits in the Zagros (Kashkan Formation, south of Lorestan)
Abstract The aim of this research is to investigation the lithofacies and sedimentary environment of the Kashkan Formation (middle Eocene) in the Lorestan sedimentary basin. In this regard, four stratigraphic sections were selected. The Kashkan Formation in the studied area has a variable thickness…
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Lithostratigraphy and biostratigraphy of Permian strata in the south of the Sanandaj–Sirjan Zone, western Kerman Province, based on foraminifera
Abstract This study investigates the lithostratigraphy and biostratigraphy of the Permian strata in the west of Sirjan City, within the southern metamorphic Sanandaj–Sirjan Zone (SSZ). The measured section is bounded by faults at its base and top. The studied strata unconformably overlie the…
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Lithostratigraphy and petrofacies of the Middle Triassic (Upper part of the Elika Formation) and the Upper Triassic–Lower Jurassic strata (Basal part of the Shemshak Group, Shamirzad Formation) in the Jajarm Bauxite Mine, NE Iran
AbstractIn the northeastern Jajarm region, within the structural zone of the Eastern Alborz, a complete sequence of the Elika Formation (Early–Middle Triassic) and the Shemshak Group (Late Triassic–Middle Jurassic) is exposed. In this study, the upper part of the Elika Formation and the Upper…
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Miocene deposits of the folded Zagros (Asmari Formation, Lorestan Region)
AbstractIn this study, the depositional and post-depositional history of carbonate rocks of the Asmari Formation in the Lorestan region was investigated. Three stratigraphic sections were analyzed: the northern Khorramabad section (92.3 m), the southeastern Khorramabad section (90 m), and the…
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Lithological influence on water quality evolution: A case study of the Zuzan Plain, northeast Iran
This study investigates the influence of lithological characteristics on the evolution of water quality in the Zuzan Plain, Northeast Iran, a region characterized by limited water resources. A total of 23 water samples were collected from various sources across the area. Physical parameters…
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Microfacies analysis, sequence stratigraphy, and depositional environment of Eocene deposits: A case study from Samawa desert, Southwestern Iraq
The facies analysis of the Eocene rocks found in South Samawa has led to the identification of two significant Eocene formations: the Rus and Dammam. The Dammam Formation holds substantial geological importance due to its extensive coverage across much of southern Iraq, serving as a primary source…
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Sedimentological Study of Sand Dunes in the Al-Najaf Province, Central Iraq
This study focused on the sedimentological attributes of the dunes in the Najaf Governorate, southern Iraq. Twelve spot samples were collected from two areas, the first was approximately 3 km from Madhlum Village, and the other was west of Al-Manathera District. Several analyses were performed…
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Decapod crustacean from the Qom Formation (Lower Miocene) of the Isfahan area, Central Iran
The discovery of a new specimen of Portunus withersi (Glaessner 1933) from the Lower Miocene Qom Formation in the Vartun section, north of Isfahan (Central Iran), contributes to our knowledge of this portunid species, to which most fossil portunids found in the Miocene of Iran have been attributed…
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Surface sediment zonation of the Zayandehroud Dam reservoir based on geochemical indices
AbstractDam reservoirs serve as suitable places to settle sedimentary materials carried by rivers. Pollutants absorbed into these sediments may lead to water contamination, increased aquatic animal mortality, and loss of biodiversity. Potentially toxic elements (PTEs) are classified as highly…
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Microfacies, depositional environment and carbonate association of the Asmari Formation in Tang-e-Gojestan
AbstractThe Asmari Formation was logged and sampled in the Tang-e-Gojestan stratigraphic section (Eshgar Anticline, Izeh Zone) to study microfacies, depositional environment and carbonate associations. The Asmari Formation with 298 m-thickness mainly consists of thick-bedded/massive cliff-forming…
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Preparation of land subsidence susceptibility map using machine learning methods based on decision tree (case study: Isfahan–Borkhar)
AbstractLand subsidence represents a severe environmental hazard, causing significant infrastructure damage and threatening cultural heritage sites. The Isfahan–Borkhar region of central Iran, with its dry climate and diverse topographical conditions, has been highly susceptible to this phenomenon…
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Investigating the relationship between the Khami reservoir horizon in the Chilingar and Garangan oilfields in the Southern Dezful Embayment using surface geochemistry
Abstract Understanding reservoir connectivity is critical for reducing exploration risk and optimizing field development. This study uses surface geochemistry techniques to investigate the relationship between the Khami reservoir horizon in the Chilingar and Garangan oilfields, located in the…