Journal of Asian Earth Sciences: X最新文献

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An enhancement in the petrophysical evaluation in a vuggy carbonate gas reservoir by integrating the core data and empirical methods, Zagros basin, south of Iran 伊朗南部扎格罗斯盆地,通过整合岩心数据和经验方法加强对岩浆碳酸盐岩气藏的岩石物理评价
Journal of Asian Earth Sciences: X Pub Date : 2024-04-01 DOI: 10.1016/j.jaesx.2024.100177
Seyed Javad Safavi , Ramin Maldar
{"title":"An enhancement in the petrophysical evaluation in a vuggy carbonate gas reservoir by integrating the core data and empirical methods, Zagros basin, south of Iran","authors":"Seyed Javad Safavi ,&nbsp;Ramin Maldar","doi":"10.1016/j.jaesx.2024.100177","DOIUrl":"https://doi.org/10.1016/j.jaesx.2024.100177","url":null,"abstract":"<div><p>The presence of vuggy pore types poses challenges in accurately assessing effective porosity. This study focuses on the significant scientific issue of improving petrophysical evaluation in vuggy carbonate gas reservoirs. The Kangan Formation is one of the main gas reservoir formations in the southern Zagros region, Iran. The main objective of the current research is to distinguish and exclude the influence of vuggy pore types from effective porosity in the reservoir pay zones of the Kangan reservoir.</p><p>In the current research, a combination of full suite logs, image logs, core analysis, and thin section studies was employed. The image logs illustrate that vuggy porosity is abundant in the Kangan Formation and these results are confirmed by the available core thin sections, specifically in Zone Kangan_B; Additionally, the cross plots of compressional velocity versus bulk density and total porosity, as a part of rock physics study, indicate the characteristics of the vuggy reservoir. Two methods are utilized to quantify vuggy porosity. The first method, the Velocity Deviation Log (VDL) approach, identifies various available pore types, especially vugs. The second method is a newly proposed approach that can exclude vuggy porosity from the computed effective porosity. In this novel approach, a variable porosity exponent (m) is derived by adopting the Lucia equation to exclude vuggy porosity from the effective porosity computations. Thus, petrophysical evaluation can be implemented based on the constant and variable “m”. Comparing both petrophysical results, it is evident that the amounts of effective porosity and water saturation are modified in the vuggy-bearing intervals. Applying the proposed approach will improve the accuracy of petrophysical properties and lead to the proper calculation of the hydrocarbon volume in the carbonate reservoir rocks containing isolated vugs, particularly in gas-bearing reservoirs where conventional logs are affected by gas contents.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"11 ","pages":"Article 100177"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056024000057/pdfft?md5=8e9e40aee0e4b36bc1eb610c2d94d3d7&pid=1-s2.0-S2590056024000057-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140332972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Petrography and stratigraphic Os isotopic ages of ferromanganese nodules from the Northwest Pacific east of Minamitorishima Island 南三岛以东西北太平洋铁锰结核的岩相学和地层奥斯同位素年龄
Journal of Asian Earth Sciences: X Pub Date : 2024-03-16 DOI: 10.1016/j.jaesx.2024.100176
Tatsuo Nozaki , Kosuke T. Goto , Yutaro Takaya , Kazuhiko Shimada , Akira Owada , Gen Shimoda , Jun-Ichi Kimura , Qing Chang , Tetsuji Onoue , Shiki Machida , Teruaki Ishii , Kenji Shimizu , Naoto Hirano , Kazuhide Mimura , Moei Yano , Junichiro Ohta , Yasuhiro Kato
{"title":"Petrography and stratigraphic Os isotopic ages of ferromanganese nodules from the Northwest Pacific east of Minamitorishima Island","authors":"Tatsuo Nozaki ,&nbsp;Kosuke T. Goto ,&nbsp;Yutaro Takaya ,&nbsp;Kazuhiko Shimada ,&nbsp;Akira Owada ,&nbsp;Gen Shimoda ,&nbsp;Jun-Ichi Kimura ,&nbsp;Qing Chang ,&nbsp;Tetsuji Onoue ,&nbsp;Shiki Machida ,&nbsp;Teruaki Ishii ,&nbsp;Kenji Shimizu ,&nbsp;Naoto Hirano ,&nbsp;Kazuhide Mimura ,&nbsp;Moei Yano ,&nbsp;Junichiro Ohta ,&nbsp;Yasuhiro Kato","doi":"10.1016/j.jaesx.2024.100176","DOIUrl":"https://doi.org/10.1016/j.jaesx.2024.100176","url":null,"abstract":"<div><p>The area offshore of Minamitorishima Island, Northwestern Pacific Ocean, contains large amounts of seafloor mineral resources such as ferromanganese (Fe–Mn) nodules, Fe–Mn crusts, and rare-earth element and yttrium (REY)-rich muds. In this study, we applied stratigraphic Os isotopic dating to a Fe–Mn nodule for the first time to date its formation/depositional age, and mineralogical and texturally characterized a complementary nodule. Based on macroscopic and microscopic observations, the studied Fe–Mn nodules can be divided into three layers: Layers L2, L1, and L0 from core to rim. Under the microscope, the Fe–Mn nodules are dominated by vernadite and Fe-oxyhydroxide. In particular, Layer L1 is dominated by banded-columnar vernadite and contains lower amounts of clay minerals derived from the detrital component than Layers L2 and L0. The bulk major and trace element geochemical compositions of sampled layers in the Fe–Mn nodules all plotted in the hydrogenous field in several discrimination diagrams. The Os isotopic ages determined by fitting to the paleo-seawater <sup>187</sup>Os/<sup>188</sup>Os curve can be divided into three clusters (35.7–31.0, 19.0–9.0, and 4.0–1.0 Ma, corresponding to Layers L2, L1, and L0, respectively). These Os isotopic ages indicate that two periods of very slow growth or growth hiatuses occurred during the formation of the Fe–Mn nodule; these age gaps are related to the intermittent (discontinuous) timings of the beginning of Fe–Mn nodule formation offshore Minamitorishima Island.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"11 ","pages":"Article 100176"},"PeriodicalIF":0.0,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056024000045/pdfft?md5=b5858134166c3bde55b62c0495a4faf1&pid=1-s2.0-S2590056024000045-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140163873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The P–T–X conditions of staurolite-garnet metabasites, NW Iran: Implications for metamorphism during Arabia-Eurasia collision 伊朗西北部白云石-石榴石偏绿岩的 P-T-X 条件:阿拉伯-欧亚大陆碰撞期间变质作用的影响
Journal of Asian Earth Sciences: X Pub Date : 2024-03-10 DOI: 10.1016/j.jaesx.2024.100175
Monir Modjarrad , Donna L. Whitney , Hadi Omrani
{"title":"The P–T–X conditions of staurolite-garnet metabasites, NW Iran: Implications for metamorphism during Arabia-Eurasia collision","authors":"Monir Modjarrad ,&nbsp;Donna L. Whitney ,&nbsp;Hadi Omrani","doi":"10.1016/j.jaesx.2024.100175","DOIUrl":"https://doi.org/10.1016/j.jaesx.2024.100175","url":null,"abstract":"<div><p>The staurolite-bearing Avajiq metabasites (AMB) crop out near the NW border of Iran with Turkey and contain the peak assemblage garnet + Ca-amphibole + staurolite + biotite + chlorite1 + ilmenite. The AMB record peak pressure–temperature (P-T) conditions of &gt;1 GPa at ∼650 °C; the moderately high pressure is consistent with the presence of staurolite in metabasalt. Garnets exhibit a weak prograde zoning, with relatively homogenous cores and a slight increase in Mg and decrease in Ca, Fe, and Mn toward the rim, consistent with garnet growth during a clockwise P-T path. Texturally late margarite + biotite + muscovite correspond to retrograde P-T conditions of ∼0.5 GPa at ∼500 °C. This stage was followed by further retrogression under greenschist facies conditions recorded by late pumpellyite + paragonite ± calcite. Based on the MORB-like composition of the AMB, it has been unclear whether the metabasites are associated with Neo-Tethyan ophiolites in the area or formed within a continental setting. However, the petrologic association of metabasites with micaschist, gneiss and marble and upper amphibolite facies conditions of metamorphism indicate that the basaltic rocks likely metamorphosed during Arabia-Eurasia continental collision, following consumption of the intervening Neo-Tethys Ocean and emplacement of the ophiolitic rocks in the region.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"11 ","pages":"Article 100175"},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056024000033/pdfft?md5=c645f20f152ecd70d6414eda17ec3b0d&pid=1-s2.0-S2590056024000033-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140069675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Probabilistic seismic hazard assessment for the United Arab Emirates using integrated seismic source model 利用综合震源模型对阿拉伯联合酋长国的地震灾害进行概率评估
Journal of Asian Earth Sciences: X Pub Date : 2024-01-29 DOI: 10.1016/j.jaesx.2024.100173
Samer A. Barakat , Mohamed G. Arab , Raghad A. Awad , Dima A. Husein Malkawi , Abdulrahman Metawa , Maher Omar
{"title":"Probabilistic seismic hazard assessment for the United Arab Emirates using integrated seismic source model","authors":"Samer A. Barakat ,&nbsp;Mohamed G. Arab ,&nbsp;Raghad A. Awad ,&nbsp;Dima A. Husein Malkawi ,&nbsp;Abdulrahman Metawa ,&nbsp;Maher Omar","doi":"10.1016/j.jaesx.2024.100173","DOIUrl":"https://doi.org/10.1016/j.jaesx.2024.100173","url":null,"abstract":"<div><p>This study emphasizes the role of active faults as seismogenic sources in probabilistic seismic hazard assessments (PSHA) in the United Arab Emirates (UAE). An extensive PSHA analysis has been carried out in this study, which incorporates faults alongside area seismic sources within a logic tree-oriented framework. Seismicity is evaluated in terms of spectral acceleration (SA) and Peak ground acceleration (PGA) for return periods of 2,475, 975, and 475 years at 5 % damping. The results are compared with seismic hazard projections derived from previous PSHA studies that utilized only area sources. A key observation is the pronounced impact of the Dibba and Oman range frontal faults on the UAE's northeastern region due to the proximity of the faults. This contributes to higher seismic hazard in this region, with some return periods showing greater hazard levels than those documented in earlier studies. In order to aid seismic hazard design in the UAE, contour maps depicting the SAs at 0.2 and 1.0 s, along with PGA, are developed. The analysis reveals that the highest seismic hazard is predicted along the northeastern borders of the UAE, particularly the coastal area of Ras-Al Khaimah, with a PGA of 0.22 g for a return period of 2,475 years.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"11 ","pages":"Article 100173"},"PeriodicalIF":0.0,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259005602400001X/pdfft?md5=df1ce81cc468fc1ebc0adc510d683828&pid=1-s2.0-S259005602400001X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139652930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Source rock potential, thermal maturity, and depositional environment of the Ordovician Ra’an Shale Member, central Saudi Arabia 沙特阿拉伯中部奥陶纪拉安页岩组的源岩潜力、热成熟度和沉积环境
Journal of Asian Earth Sciences: X Pub Date : 2024-01-28 DOI: 10.1016/j.jaesx.2024.100174
Faisal AlGhamdi , Lamidi Babalola , Abdullah Alqubalee , Israa S. Abu-Mahfouz , Bandar Alotaibi , Mohammed Abouelresh
{"title":"Source rock potential, thermal maturity, and depositional environment of the Ordovician Ra’an Shale Member, central Saudi Arabia","authors":"Faisal AlGhamdi ,&nbsp;Lamidi Babalola ,&nbsp;Abdullah Alqubalee ,&nbsp;Israa S. Abu-Mahfouz ,&nbsp;Bandar Alotaibi ,&nbsp;Mohammed Abouelresh","doi":"10.1016/j.jaesx.2024.100174","DOIUrl":"https://doi.org/10.1016/j.jaesx.2024.100174","url":null,"abstract":"<div><p>The Ordovician Ra’an Shale Member of the Qassim Formation in Saudi Arabia has potential as an unconventional hydrocarbon play. This shale unit, however, has not been studied in detail for its geochemical characteristics, thermal maturity, and reservoir quality. This study aims to investigate this shale member from a well-exposed section at Khashm Ra’an in the Qassim region, central Saudi Arabia. Detailed fieldwork followed by comprehensive geochemical and petrographic analyses were conducted to evaluate the hydrocarbon potential and interpret the depositional setting of this shale member. Integration of field sedimentological description, sample description and thin section petrography facilitated the identification of partially burrowed laminated fish-bearing shale, bioturbated siltstone, graptolite-bearing shale, shale/siltstone and sandstone/shale interbeds in the investigated outcrop. The intervals were sandwiched between the bioturbated sandstone of the underlying Kahfah Sandstone and the overlying Quwarah Formation. These lithofacies are interpreted to have been deposited in a shallow marine depositional setting. The preservation of graptolite in some intervals indicates low bottom dissolved oxygen conditions. The mineralogical analysis indicated that clay minerals, quartz, and feldspars are the major mineralogical components in the study samples. Based on mineralogical compositions, the studied samples were classified into three main lithofacies types; silica-rich argillaceous mudstone, clay-rich siliceous mudstone, and mixed siliceous mudstone lithofacies. Elemental analysis proxies indicated that most of the tested samples were deposited in anoxic environment. The calculated values of the chemical index of weathering (CIW) indicated that samples were exposed to high rates of weathering, which negatively impacted organic matter preservation.</p><p>Microscopic investigation identified the pore systems of the Ra’an Member as interparticle, interparticle and fracture pore systems, and observed the diagenetic features in the form of cementation, compaction, and dissolution. Organic geochemical analysis indicates that the samples are mainly of kerogen type III and II/III with poor to fair potential for hydrocarbon generation. This study provides an improved understanding of the depositional setting, organic geochemical, and thermal evolution of the Ra'an Member as a potential unconventional hydrocarbon reservoir.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"11 ","pages":"Article 100174"},"PeriodicalIF":0.0,"publicationDate":"2024-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056024000021/pdfft?md5=911f2a55b2dc0653d2cd8d30f293253b&pid=1-s2.0-S2590056024000021-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139652929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Provenance of the lower Cretaceous Lumshiwal Formation, Surghar Range, northwestern Indian Plate, Pakistan: Insights from new petrographical and geochemical analysis 巴基斯坦印度板块西北部苏尔加尔山脉下白垩统 Lumshiwal 地层的成因:新岩相学和地球化学分析的启示
Journal of Asian Earth Sciences: X Pub Date : 2023-12-28 DOI: 10.1016/j.jaesx.2023.100172
Muhammad Waseem Khan , Saif Ur Rehman , Sajjad Ahmed , Shahid Jameel Sameeni
{"title":"Provenance of the lower Cretaceous Lumshiwal Formation, Surghar Range, northwestern Indian Plate, Pakistan: Insights from new petrographical and geochemical analysis","authors":"Muhammad Waseem Khan ,&nbsp;Saif Ur Rehman ,&nbsp;Sajjad Ahmed ,&nbsp;Shahid Jameel Sameeni","doi":"10.1016/j.jaesx.2023.100172","DOIUrl":"https://doi.org/10.1016/j.jaesx.2023.100172","url":null,"abstract":"<div><p>This paper documents the provenance and palaeoclimatic conditions of the Cretaceous Lumshiwal Formation near the western margin of the Indian plate in the Surghar Range, northwest Pakistan. The combined techniques of petrography, X-ray diffraction (XRD), and bulk rock geochemistry were utilized to reveal the source and mineral-geochemical composition and sandstone type. The petrographic analysis of the sandstones confirms the dominance of quartz, feldspar, and rock fragments, with subordinate occurrences of muscovite, magnetite, and hematite. Heavy minerals consist of tourmaline, titanite (sphene), rutile, cassiterite, monazite, and zircon. The cementing material includes ferruginous clays, jarosite, glauconite, calcite, minor dolomite, gypsum, and silica. The modal composition plot of the sandstones falls into arkose to sub-arkose, with a few lithic arkose varieties. Lithic fragments mainly include granite, with a minor occurrence of granitic gneiss, chert, phyllite, and quartz mica schist. The discriminatory provenance diagram of the sandstones suggests a transitional continental provenance. The bulk rock geochemistry of the sandstones reveals the presence of SiO<sub>2</sub>, TiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>O<sub>3</sub>, FeO, MnO, CaO, MgO, Na<sub>2</sub>O, K<sub>2</sub>O and P<sub>2</sub>O<sub>5</sub>. The petrographical mineral findings were corroborated with XRD, SEM, and bulk rock geochemistry analysis (major element concentrations and their ratios), which collectively all confirm a felsic igneous source. The tectonic discrimination diagram (SiO<sub>2</sub>-log K<sub>2</sub>O/Na<sub>2</sub>O wt %) implies a dominant influx of sediment sourced from the passive continental margin of the uplifted Gondwana Indian plate. Terrigenous sediments found in the Lumshiwal Formation are interpreted to have been derived from granites and granitic gneisses of the Indian Shield. The palaeo-weathering index, including the chemical index of alteration (CIA) and the chemical index of weathering (CIW) of the Lumshiwal Formation confirms a low to moderately weathered source area. The climate discrimination plot (SiO<sub>2</sub> versus Al<sub>2</sub>O<sub>3</sub> + Na<sub>2</sub>O + K<sub>2</sub>O) shows that humid to semi-humid climatic conditions during the deposition of the Lumshiwal Formation.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"11 ","pages":"Article 100172"},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056023000373/pdfft?md5=d329e257640ce251741dcf4c0d2d633f&pid=1-s2.0-S2590056023000373-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139100047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of earthquake potential using a kinematic crustal block motion model in Java, Indonesia, based on GNSS observation 利用基于全球导航卫星系统观测的运动学地壳块体运动模型评估印度尼西亚爪哇的地震潜力
Journal of Asian Earth Sciences: X Pub Date : 2023-12-14 DOI: 10.1016/j.jaesx.2023.100171
Rio Raharja , Takeo Ito , Irwan Meilano
{"title":"Evaluation of earthquake potential using a kinematic crustal block motion model in Java, Indonesia, based on GNSS observation","authors":"Rio Raharja ,&nbsp;Takeo Ito ,&nbsp;Irwan Meilano","doi":"10.1016/j.jaesx.2023.100171","DOIUrl":"10.1016/j.jaesx.2023.100171","url":null,"abstract":"<div><p>Assessing the earthquake potential in Java Island is of paramount importance due to its status as one of the world's most seismically active regions, a concern that is heightened by the island’s high population density. This study presents a comprehensive analysis of crustal deformation in Java Island, utilizing observations from Global Navigation Satellite System (GNSS) gathered over a decade, from 2008 to 2018. The GNSS data revealed a distinct non-linear trend, primarily due to the persistent post-seismic deformation following the 2006 M<sub>w</sub>7.7 Java earthquake. To enhance the accuracy of our analysis, we employed viscoelastic relaxation modeling for data correction. Among the eleven unique crustal block motion models created, MODEL04 emerged as the optimal model for assessing earthquake potential. The seismic moment deficit rates obtained from this model provide valuable insight into the region's potential to generate future seismic events. Notably, our findings suggest that the convergence of the Australian plate with Western and Eastern Java carries the potential to produce earthquakes of M<sub>w</sub>8.7 and M<sub>w</sub> &gt; 7.8, respectively. An exploration of the inland fault interfaces revealed seismic moment deficit rates suggestive of the potential for M<sub>w</sub>7.0 earthquakes.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"11 ","pages":"Article 100171"},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056023000361/pdfft?md5=783607521e3fe9ad02e726b9acef5f02&pid=1-s2.0-S2590056023000361-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138987215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shallow-water carbonate facies herald the onset of the Palaeocene-Eocene Thermal Maximum (Hazara basin, Northern Pakistan) 浅水碳酸盐面预示着古新世始新世热量最大化的开始(巴基斯坦北部哈扎拉盆地)
Journal of Asian Earth Sciences: X Pub Date : 2023-12-05 DOI: 10.1016/j.jaesx.2023.100169
Mubashir Ali , Giovanni Coletti , Luca Mariani , Andrea Benedetti , Muhammad-Jawad Munawar , Saif Ur Rehman , Pietro Sternai , Daniela Basso , Elisa Malinverno , Khurram Shahzad , Suleman Khan , Muhammad Awais , Muhammad Usman , Sébastien Castelltort , Thierry Adatte , Eduardo Garzanti
{"title":"Shallow-water carbonate facies herald the onset of the Palaeocene-Eocene Thermal Maximum (Hazara basin, Northern Pakistan)","authors":"Mubashir Ali ,&nbsp;Giovanni Coletti ,&nbsp;Luca Mariani ,&nbsp;Andrea Benedetti ,&nbsp;Muhammad-Jawad Munawar ,&nbsp;Saif Ur Rehman ,&nbsp;Pietro Sternai ,&nbsp;Daniela Basso ,&nbsp;Elisa Malinverno ,&nbsp;Khurram Shahzad ,&nbsp;Suleman Khan ,&nbsp;Muhammad Awais ,&nbsp;Muhammad Usman ,&nbsp;Sébastien Castelltort ,&nbsp;Thierry Adatte ,&nbsp;Eduardo Garzanti","doi":"10.1016/j.jaesx.2023.100169","DOIUrl":"10.1016/j.jaesx.2023.100169","url":null,"abstract":"<div><p>We investigate the Palaeocene succession of the Hazara Basin (Northern Pakistan) to better understand the impact of climate change on marine carbonate-producing organisms. These shallow-water carbonates, deposited during the Late Palaeocene, before the onset of the Palaeocene-Eocene Thermal Maximum, were studied using a quantitative approach to highlight changes in the skeletal assemblage. We recognise a decrease in the abundance of colonial corals and green calcareous algae and an increase in larger benthic foraminifera and red calcareous algae from the early Thanetian to the late Thanetian. Increasing temperatures may represent a plausible cause for the decline of the more sensitive colonial corals in favor of the more tolerant larger benthic foraminifera. A similar pattern is observed in most successions deposited along the margins of the Neotethys Ocean, suggesting a connection with the Late Palaeocene environmental changes that heralded the PETM hyperthermal event. Our stratigraphic analysis of the Hazara Basin strata suggests that the biotic turnovers occurred during the Palaeocene – Eocene transition started already before the onset of the Palaeocene Eocene Thermal Maximum as recorded by the geochemical proxies.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"11 ","pages":"Article 100169"},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056023000348/pdfft?md5=f7fb86d5f0e52d4f3fc0ae1f8f7467c9&pid=1-s2.0-S2590056023000348-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138622125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Geochemistry of ferromanganese nodules in the soil of Okinawa Island, Japan: Paleoclimatic implications and discrimination scheme of the nodule origins” [J. Asian Earth Sci.: X 8 (2022) 100127] 更正“日本冲绳岛土壤中铁锰结核的地球化学:结核起源的古气候影响和判别方案”[J.Asian Earth Sci.:X 8(2022)100127]
Journal of Asian Earth Sciences: X Pub Date : 2023-12-01 DOI: 10.1016/j.jaesx.2023.100141
Keishiro Azami , Kazutaka Yasukawa , Yasuhiro Kato
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引用次数: 0
Corrigendum to “Petrology of the Paleogene shoshonitic volcanism in north Sarab area, NW Iran: Geochemical, Ar-Ar dating and Sr-Nd-Pb isotopic constraints” [J. Asian Earth Sci.: X 8 (2022) 100109] 伊朗北部Sarab地区古近系松玄岩火山岩岩石学:地球化学、Ar-Ar测年和Sr-Nd-Pb同位素约束[J]。亚洲地球科学。[x 8 (2022) 100109]
Journal of Asian Earth Sciences: X Pub Date : 2023-12-01 DOI: 10.1016/j.jaesx.2023.100145
Somaye Heidari , Amir Ali Tabbakh Shabani , Shohreh Hassanpour , Reza Maghdour-Mashhour
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引用次数: 0
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