Journal of Asian Earth Sciences: X最新文献_第7页

Application of paleo-structural and seismic sequence stratigraphy analysis to determine the potential plays within the Proterozoic sequence of the Ganga Basin, India 应用古构造和地震层序地层学分析确定印度恒河盆地元古代层序内的潜在区块

Journal of Asian Earth Sciences: X Pub Date : 2023-01-01 DOI: 10.1016/j.jaesx.2023.100143

Surajit Gorain, Asit Kumar, C. Laxma Reddy

引用次数: 0

Fluid inclusion and stable isotope (H–O–S–Pb) constraints on the genesis of the Haxi gold deposit, west Junggar, China 准噶尔西部哈西金矿床成因的流体包裹体和稳定同位素（H–O–S–Pb）约束

Journal of Asian Earth Sciences: X Pub Date : 2023-01-01 DOI: 10.1016/j.jaesx.2022.100131

Lei Jiang , Xingxing Duan , Zuohuai Yang , Liang He , Yue Dong , Ying Wang

引用次数: 0

Neotethyan Ankara Melange, central Turkey: Formation by accretion of seamounts and supra-subduction zone ophiolites in an oceanic fore-arc setting 土耳其中部新特提斯-安卡拉-梅拉奇：海洋弧前环境中海山和超俯冲带蛇绿岩的增生形成

Journal of Asian Earth Sciences: X Pub Date : 2023-01-01 DOI: 10.1016/j.jaesx.2023.100151

Alastair H.F. Robertson , Osman Parlak , Kemal Taslı , Paulian Dumitrica , Timur Ustaömer

引用次数: 0

K-Ar dating, petrography, and geochemistry of diabase dikes from Sidakan area, northeastern Iraq: Implications for petrogenesis and Neotethyan tectonics 伊拉克东北部Sidakan地区辉绿岩脉的K-Ar定年、岩石学和地球化学：对岩石成因和新特提斯构造的启示

Journal of Asian Earth Sciences: X Pub Date : 2023-01-01 DOI: 10.1016/j.jaesx.2023.100142

Yawooz A. Kettanah , Alan Koyi , Nihad M. Karo

引用次数: 0

Timing the Mikir Hill uplift in Assam Basin: Record of stress propagation along the eastern margin of the Indian Plate 阿萨姆邦盆地Mikir Hill隆起的时间安排：沿印度板块东边缘的应力传播记录

Journal of Asian Earth Sciences: X Pub Date : 2023-01-01 DOI: 10.1016/j.jaesx.2023.100137

Mainak Choudhuri, Prabir Routray, Bikashkali Jana, Sudhir Mathur

引用次数: 0

Zircon U-Pb ages and geochemistry of Early Cretaceous volcanic rocks, northwestern Korean Peninsula: Constraints on Late Early Cretaceous continental arc distribution in Northeast Asia 朝鲜半岛西北部早白垩世火山岩锆石U-Pb年龄及地球化学特征:对东北亚早白垩世晚期大陆弧分布的制约

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100121

Jonghyok Yang , Hyonchol Ku , Ung Pak , Chungil Ri , Myongchol Kim , Cholsu Jong , Hyonuk Pak , Jongnam Kim , Songhyok Ju , Cholhyon Kim , Jusong Yun , Sunghyon Kim

{"title":"Zircon U-Pb ages and geochemistry of Early Cretaceous volcanic rocks, northwestern Korean Peninsula: Constraints on Late Early Cretaceous continental arc distribution in Northeast Asia","authors":"Jonghyok Yang , Hyonchol Ku , Ung Pak , Chungil Ri , Myongchol Kim , Cholsu Jong , Hyonuk Pak , Jongnam Kim , Songhyok Ju , Cholhyon Kim , Jusong Yun , Sunghyon Kim","doi":"10.1016/j.jaesx.2022.100121","DOIUrl":"10.1016/j.jaesx.2022.100121","url":null,"abstract":"<div><p>In the northwestern Korean Peninsula, Cretaceous volcanic rocks are composed of andesite, andesite-dacite and rhyolite intercalated with terrigenous clastic rocks. Zircon grains selected from these rocks are authigenic zircons with obvious crystal edges and oscillatory zoning, their Th/U ratios being generally larger than 0.4 (0.16–2.22), indicating magmatic origin. Most rocks were formed at Early Cretaceous Albian (113–103 Ma) and partially, at late Aptian, Prior to this time magmatism took place at 125 Ma and 135 Ma. All the negative ε<sub>Hf</sub>(t) values mean that these magma sources were contaminated by crust materials or derived from enriched mantle. Volcanic rocks belong to calc-alkaline series and partially to peraluminous series with relatively high alkali content. Chondrite-normalized REE patterns display right-lean LREE rich type and Primitive-mantle-normalized REE patterns do obvious negative anomalies in LILE (Ba, Sr), HFSE (Nb, Ta, P, Zr, Ti), but obvious positive anomalies in LIL (Rb, Pb) and HFS (Th, U, Nd). These volcanic rocks were formed in continental arc setting and their geochemical properties being similar to those of arc ADR (normal Island-Arc Andesite-Dacite-Rhyolite) suite rather than those of adakite. In the Late Early Cretaceous, west area of northeastern Asia including western Liaoning, China was in extensional setting but east area of northeastern Asia including northwestern Korean Peninsula, Jihei, eastern China and Far East areas, Russia were in continental arc setting.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100121"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000421/pdfft?md5=903547db794c709e77fb99fbbe80fe83&pid=1-s2.0-S2590056022000421-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46865315","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

A history of the latest and Neogene unconformities, offshore Palawan and the southern South China Sea 巴拉望岛近海和南海南部最新和新近纪不整合面史

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100116

Xiwu Luan , Peter Lunt

{"title":"A history of the latest and Neogene unconformities, offshore Palawan and the southern South China Sea","authors":"Xiwu Luan , Peter Lunt","doi":"10.1016/j.jaesx.2022.100116","DOIUrl":"10.1016/j.jaesx.2022.100116","url":null,"abstract":"<div><p>The age and character of the main unconformities offshore Palawan is resolved, and their history reviewed. Some very deep and very shallow unconformities have insufficient well data, but from the Oligocene to Late Miocene times a series of unconformities can be dated, characterised and correlated regionally to help develop a new tectono-stratigraphic framework. This framework does not support the widely cited idea of Early Miocene subduction of a Proto-South China Sea plate followed by collision over a plate suture.</p><p>The absence or very weak expression of a Base Miocene Unconformity (c. 24 Ma), so strongly expressed across northern Borneo, also suggests a major revision of tectonic models is required. In spite of many cited reports, there is no evidence for an unconformity in the later Early Miocene (c. 17 to 15 Ma), which was a period of gradually increasing compression and uplift. The main mid-Neogene seismic unconformity is the Red Unconformity dated at about 12–13 Ma (equivalent to the DRU of Sabah). This was when the uplift of a foreland over-thrust system paused, and a locally erosional surface was rapidly transgressed.</p><p>This review describes the neglect of analytical sciences that remain a crucial part of basic geological studies.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100116"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000378/pdfft?md5=4b2ad7277b0bcfa377cf6cd48187058d&pid=1-s2.0-S2590056022000378-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54647981","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: 2

Geochemical and radiogenic isotopic signatures of granitic rocks in Chanthaburi and Chachoengsao provinces, southeastern Thailand: Implications for origin and evolution 泰国东南部Chanthaburi和chachoengao省花岗质岩石的地球化学和放射成因同位素特征:起源和演化意义

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100111

Etsuo Uchida , Shinya Nagano , Sota Niki , Kou Yonezu , Yu Saitoh , Ki-Cheol Shin , Takafumi Hirata

{"title":"Geochemical and radiogenic isotopic signatures of granitic rocks in Chanthaburi and Chachoengsao provinces, southeastern Thailand: Implications for origin and evolution","authors":"Etsuo Uchida , Shinya Nagano , Sota Niki , Kou Yonezu , Yu Saitoh , Ki-Cheol Shin , Takafumi Hirata","doi":"10.1016/j.jaesx.2022.100111","DOIUrl":"10.1016/j.jaesx.2022.100111","url":null,"abstract":"<div><p>The Chanthaburi, Pliew, Klathing, Khao Cha Mao, and Khao Hin Son granitic bodies in Chanthaburi and Chachoengsao provinces in southeastern Thailand, which are located on the southwestern side of the Mae Ping Fault and eastern side of the Klaeng Fault, were investigated. In this study, magnetic susceptibility measurements, whole-rock chemical composition and Nd-Sr isotope analyses, and zircon U-Pb dating were conducted on these granitic bodies. The surveyed granitic rocks are classified as I- to A-type granites, are of the ilmenite series, and show clearly negative Eu anomalies, which suggest they formed under reducing conditions. Nd-Sr isotope ratios indicate continental crust material involvement in the formation of these granite bodies. The magnetic and geochemical signatures are similar to those of granite bodies in southwestern Cambodia. The study area is thus considered an extensional area of southwestern Cambodia, corresponding to the Sukhothai Zone (the Chanthaburi-Kampong Chhnang Zone). Zircon U-Pb dating yields ages of 208–214 Ma (the Late Triassic) for granite bodies except for the Khao Cha Mao granitic body, which dates to 55 Ma. The former age corresponds to the collision time of the Sibumasu and Indochina terranes, and the latter age is likely related to the collision time of the Indian and Eurasian continents.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100111"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000329/pdfft?md5=5e9e936a35c6033904e2b642300a024e&pid=1-s2.0-S2590056022000329-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41362806","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: 4

Geochemistry of ferromanganese nodules in the soil of Okinawa Island, Japan: Paleoclimatic implications and discrimination scheme of the nodule origins 日本冲绳岛土壤中锰铁结核的地球化学特征:结核起源的古气候意义和鉴别方案

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100127

Keishiro Azami , Kazutaka Yasukawa , Yasuhiro Kato

{"title":"Geochemistry of ferromanganese nodules in the soil of Okinawa Island, Japan: Paleoclimatic implications and discrimination scheme of the nodule origins","authors":"Keishiro Azami , Kazutaka Yasukawa , Yasuhiro Kato","doi":"10.1016/j.jaesx.2022.100127","DOIUrl":"10.1016/j.jaesx.2022.100127","url":null,"abstract":"<div><p>Shimajiri–Mahji refers to dark-red soil covering Ryukyu limestone that is characterized by buried ferromanganese (Fe–Mn) nodules, and it is widely distributed in Okinawa Island, southwestern Japan. The formation environment of the Fe–Mn nodules is considered closely related to the pedogenetic process of Shimajiri–Mahji because the mineral assemblage of the nodules is similar to that of the surrounding soil. There are two competing hypotheses about the formation environment of the Fe–Mn nodules: marine or terrestrial. In this study, the chemical composition of the Fe–Mn nodules was analyzed to determine their origin. The low Ni and Cu contents and the positive Ce and negative Y anomalies of the Fe–Mn nodules are inconsistent with the geochemical features associated with formation in the deep ocean and shallow seas or lakes, respectively. In contrast, the geochemical features of the Fe–Mn nodules correspond to formation in terrestrial soil, especially in terra rossa. An elemental map of the Mn/Fe ratio and computed tomography results demonstrated that the Fe–Mn nodules have a layered structure, which indicates a temporal change in the redox potential of Shimajiri–Mahji. This may be attributed to changes in the soil moisture owing to the variable intensity of the East Asian monsoon and climate change. A new discrimination diagram based on Al/Na and Co/Rb ratios was developed for classifying the formation environments of Fe–Mn nodules, which may help improve understanding of the formation history of soils and sediments containing them.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100127"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000482/pdfft?md5=6211e126e744b3441d05159f8051e0ec&pid=1-s2.0-S2590056022000482-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46566767","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: 1

Tsunami hazard and risk zoning for Qurayyat in northeast Oman coast: Worst-case credible scenarios along the Makran Subduction Zone, Western Asia 阿曼东北部海岸Qurayyat的海啸灾害和风险分区:西亚Makran俯冲带最坏的可信情景

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100103

Zaid Al-Habsi , Mohamed Hereher , Issa El-Hussain , Rachid Omira , Maria Ana Baptista , Ahmed Deif , Talal Al-Awadhi , Noura Al-Nasiri

{"title":"Tsunami hazard and risk zoning for Qurayyat in northeast Oman coast: Worst-case credible scenarios along the Makran Subduction Zone, Western Asia","authors":"Zaid Al-Habsi , Mohamed Hereher , Issa El-Hussain , Rachid Omira , Maria Ana Baptista , Ahmed Deif , Talal Al-Awadhi , Noura Al-Nasiri","doi":"10.1016/j.jaesx.2022.100103","DOIUrl":"10.1016/j.jaesx.2022.100103","url":null,"abstract":"<div><p>This paper investigates the deterministic tsunami hazard scenarios to assess the potential impact on the Qurayyat coast, northeast Oman. It assesses the maximum tsunami hazard characteristics with a focus on the zoning of tsunami hazard related to the human ability to stand within the inundation areas. Additionally, probabilities of buildings damage and small vessels loss are presented using fragility functions adapted from published studies of the 2011 Great East Japan Tsunami. Two worst-case credible tsunamigenic scenarios from Makran Subduction Zone (MSZ) were selected: 7.2Mw and 8.8Mw earthquake scenarios from western and eastern segments of the MSZ, respectively. A validated nonlinear shallow water numerical code with nested grids is used to simulate the tsunamis for each scenario over a 15 m-resolution grid for the Qurayyat region. Our results show that 8.8Mw earthquake corresponds to the maximum probable tsunami scenario posing the most severe threat. This scenario causes tsunami waves reaching 4.9 m and leads to a maximum runup height, maximum flow depth, and maximum inundation of 5.2 m, 3.8 m and 1.5 km, respectively. Furthermore, the tsunami hazard zoning for human stability suggests five hazard levels, ranging from “very low” to “very high” and the flooded buildings are classified into six damage levels, ranging from “minor” to “washed away”. The probabilities of buildings damage are high for minor and moderate damage levels. The vessels are classified based on their weight and location of motor. Obtained probabilities of vessels loss show that the outboard motor vessels would suffer greatest loss than inboard and the heavier ones.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100103"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259005602200024X/pdfft?md5=6a55a239940b4af3ee76958c24825a78&pid=1-s2.0-S259005602200024X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54647878","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: 1