Journal of Asian Earth Sciences: X最新文献_第9页

Geochemistry and Sr-Nd isotopic studies of Precambrian gneisses from central Aravalli Craton, NW India: Implications for crustal evolution and reworking 印度中部Aravalli克拉通前寒武纪片麻岩地球化学和Sr-Nd同位素研究:地壳演化和改造意义

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100125

Ismail Samiullah Hamidullah , Md. Erfan Ali Mondal , Iftikhar Ahmad , Waliur Rahaman , Jitendra Kumar Dash

{"title":"Geochemistry and Sr-Nd isotopic studies of Precambrian gneisses from central Aravalli Craton, NW India: Implications for crustal evolution and reworking","authors":"Ismail Samiullah Hamidullah , Md. Erfan Ali Mondal , Iftikhar Ahmad , Waliur Rahaman , Jitendra Kumar Dash","doi":"10.1016/j.jaesx.2022.100125","DOIUrl":"10.1016/j.jaesx.2022.100125","url":null,"abstract":"<div><p>The Aravalli Craton of the Indian shield constitutes heterogeneous basement lithologies (Banded Gneissic Complex; BGC), and among them, the granitoids are the most voluminous lithology. The BGC comprises two lithotectonic units, viz., BGC-I and BGC-II. The BGC-II has been further classified as amphibolite facies Mangalwar and granulite facies Sandmata Complexes. In the present study, the gneisses of the Mangalwar Complex are geochemically categorized into (i) low-and high-pressure sodic gneisses and (ii) potassic gneisses. The sodic gneisses are metaluminous and characterized by high Sr/Y and La<sub>N</sub>/Yb<sub>N</sub> ratios; and exhibit subduction-related negative anomalies of Nb and Ti. The ε<sub>Nd</sub> (t = 2992 Ma) ranges from +2.3 to +3.1, with an average Nd-depleted mantle model age (T<sub>DM</sub>) of 3.06 Ga. The whole-rock Sm-Nd isochron age is ∼3.0 Ga (2992 ± 340 Ma). Genetically, the sodic gneisses originated from the melting of an enriched precursor (oceanic plateau) in an arc environment. These gneisses show strong correlations with the gneisses from BGC-I depicting similar geochemical signatures. In contrast, the potassic gneisses are characterized by slightly higher SiO<sub>2</sub> along with high K<sub>2</sub>O and high large-ion lithophile elements and negative Eu anomalies along with negative ε<sub>Nd</sub> (t = 1.7 Ga) (−13.2 to −3.9), higher initial <sup>87</sup>Sr/<sup>86</sup>Sr isotopic ratios and average T<sub>DM</sub> = 2.87 Ga. These geochemical features of the potassic gneisses indicate that they were derived from the reworking of the pre-existing TTG-like (sodic gneisses) crust during the Paleoproterozoic Era.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100125"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000469/pdfft?md5=d675c09ab4a6f7e9144013dbc2a8bb19&pid=1-s2.0-S2590056022000469-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48552647","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

Potential seismicity by impoundment of the Baihetan Reservoir, Xiaojiang Fault Zone, Southwest China 西南小江断裂带白鹤滩水库蓄水潜在地震活动

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100106

Tiantian Dou, Huihong Cheng, Huai Zhang, Yaolin Shi

{"title":"Potential seismicity by impoundment of the Baihetan Reservoir, Xiaojiang Fault Zone, Southwest China","authors":"Tiantian Dou, Huihong Cheng, Huai Zhang, Yaolin Shi","doi":"10.1016/j.jaesx.2022.100106","DOIUrl":"10.1016/j.jaesx.2022.100106","url":null,"abstract":"<div><p>Baihetan reservoir, the second-largest hydropower station in China, is located at the east boundary of the Sichuan-Yunnan block, one of the most seismic active zones in continental China. Many studies have shown that the potential risk of reservoir-induced seismicity will ramp up when the crustal stress field is remarkably perturbed following its impoundment. In this work, based on the fully-coupled poroelastic theory, we built models with different parameters to quantitatively analyze the displacement and stress field changes caused by the Baihetan reservoir impoundment. The preliminary results show that the maximum subsidence reaches about 0.3 m, and the stress change is about 0.4 MPa at 5 km after five years of impoundment. Most strikingly, we find a significant increase of Coulomb Failure Stress Change (ΔCFS) on the fault planes at the vicinities of the surrounding Xiaojiang Fault, Daliangshan Fault, and Lianfeng Fault, suggesting high reservoir induced seismicity risks. However, the occurrence of induced/triggered earthquakes is not only related to the regional tectonic loading, but also the rock strength. Moreover, the reservoir water level rise rate will lead to different spatial–temporal patterns of the induced micro-seismicity, however, this difference will gradually disappear as the reservoir continues to operate, and the large earthquake is mainly affected by geological tectonics.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100106"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000275/pdfft?md5=4b7b7c7e5a16633c449248f0f32f5ba0&pid=1-s2.0-S2590056022000275-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48018678","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

Concealed anatomy and new geological features beneath desert areas of NW India – Constrained from high resolution aero-geophysical data 印度西北部沙漠地区隐藏的解剖结构和新的地质特征——来自高分辨率航空地球物理数据的约束

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100126

Debojit Talukdar , Ashish Kumar Raul , Ch Ravi Kumar , Antony Selinraj , Niroj Kumar Sarkar , Bijay Kumar Sahu , Manoranjan Mohanty , K.V. Maruthi

{"title":"Concealed anatomy and new geological features beneath desert areas of NW India – Constrained from high resolution aero-geophysical data","authors":"Debojit Talukdar , Ashish Kumar Raul , Ch Ravi Kumar , Antony Selinraj , Niroj Kumar Sarkar , Bijay Kumar Sahu , Manoranjan Mohanty , K.V. Maruthi","doi":"10.1016/j.jaesx.2022.100126","DOIUrl":"10.1016/j.jaesx.2022.100126","url":null,"abstract":"<div><p>The vast swathe of area in the Trans-Aravalli region between the western part of the South Delhi Fold Belt and eastern part of the Barmer basin, north-western India exhibits limited geological information due to thick sand cover of the Thar Desert. The present study is to unravel the hidden architecture of the above area using recently acquired high-resolution aero-magnetic data. Here, our interpreted results brought out a buried ring structure in the northern part and NW-SE trending constellation of linear magnetic highs in the southern part. Considering the regional geological milieu, our study correlates the buried ring structure with a possible remnant volcanic cone of the Neoproterozoic silicic Malani Large Igneous Province. Secondly, the significant NW-SE trending linear magnetic highs in the south possibly represents a humongous dyke swarm activity, facilitated by the intricate network of fractures. The orientation of these magnetic linear are conspicuously similar with the Deccan linked Sarnu-Dandali dykes and regional Barmer-Cambay rift system. The northwestern portion of study area displays high magnetic and gravity responses of long wavelength features indicating crustal heterogeneity. The study for the first time documents two concealed structures, which may hold a link of Neoproterozoic Malani and Mesozoic Deccan magmatic pulses.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100126"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000470/pdfft?md5=2690eebef1844be78cd138e4b0354d7a&pid=1-s2.0-S2590056022000470-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46123541","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

Spinel crystals in mantle ultramafic xenoliths as the source of P-T conditions of alteration above the magma chamber beneath the Avacha Volcano (Kamchatka) 地幔超镁铁质捕虏体中的尖晶石晶体是Avacha火山（堪察加半岛）下方岩浆室上方P-T蚀变条件的来源

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100119

Viktor Sharapov , Yuri Semenov , Grigory Kuznetsov , Anatoly Boguslavsky

引用次数: 0

Early detection of earthquake magnitude based on stacked ensemble model 基于叠加系综模型的地震震级早期检测

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100122

Anushka Joshi, Chalavadi Vishnu, C Krishna Mohan

{"title":"Early detection of earthquake magnitude based on stacked ensemble model","authors":"Anushka Joshi, Chalavadi Vishnu, C Krishna Mohan","doi":"10.1016/j.jaesx.2022.100122","DOIUrl":"10.1016/j.jaesx.2022.100122","url":null,"abstract":"<div><p>Anew machine learning model, named, EEWPEnsembleStack has been developed for predicting the magnitude of the earthquake from a few seconds of recorded ground motion after the arrival of the P phase. The testing and training dataset consists of 2360 and 591 strong-motion records from central Japan recorded by the Kyoshin Network. Eight parameters that are well correlated with the magnitude have been used for training and testing of the model. Feature ablation study using several models shows that a minimum mean absolute error of 0.42 has been obtained for the case when the model has been trained by using all parameters rather than by a single parameter. The model ablation study indicates that among all individually trained single models, the minimum error has been obtained for a Decision Tree regression model. However, the error is minimized when all machine learning models have been together utilized in the EEWPEnsembleStack model for the training purposes. The EEWPEnsembleStack model has been used to predict a 6.3 magnitude earthquake by using its 21 records from various stations that lie within 50 to 150 km epicentral distance. The predicted magnitude from the developed model using weighted magnitude prediction is obtained as 6.4, which is close to the actual magnitude. The comparison of the predicted magnitude of this earthquake from the developed model with that predicted by using popular <span><math><msub><mi>τ</mi><mi>c</mi></msub></math></span> and <span><math><msub><mi>P</mi><mi>d</mi></msub></math></span> methods clearly indicates the suitability of the developed machine learning model over other conventional models.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100122"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000433/pdfft?md5=d1fc7d0f122e5685f505981910b7a4b3&pid=1-s2.0-S2590056022000433-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42726863","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: 22

Seismological and InSAR based investigations to characterise earthquake swarms in Jamnagar, Gujarat, India – An active intraplate region 印度古吉拉特邦贾姆纳格尔地震群特征的地震学和InSAR调查——一个活跃的板内区域

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100118

G. Srijayanthi , R.S. Chatterjee , Charu Kamra , Mamta Chauhan , Sumer Chopra , Santosh Kumar , Prakash Chauhan , Harsh Limbachiya , P.K. Champati Ray

{"title":"Seismological and InSAR based investigations to characterise earthquake swarms in Jamnagar, Gujarat, India – An active intraplate region","authors":"G. Srijayanthi , R.S. Chatterjee , Charu Kamra , Mamta Chauhan , Sumer Chopra , Santosh Kumar , Prakash Chauhan , Harsh Limbachiya , P.K. Champati Ray","doi":"10.1016/j.jaesx.2022.100118","DOIUrl":"10.1016/j.jaesx.2022.100118","url":null,"abstract":"<div><p>A swarm type of seismic activity started near Khankotda and Matwa villages in the Jamnagar district in the middle of September 2019. 76 earthquakes belonging to this activity were well recorded and located by the network operated by the Institute of Seismological Research. The general trend of the 2019 swarm earthquakes is NW-SE, in conformity with the strike of the local lineaments and dykes. This swarm is not associated with any major faults in the region (the region is devoid of any major mapped faults), the closest being the ENE-WSW oriented North Kathiawar Fault, ∼60 km north of it. The epicentres of the 2019 swarm are in the proximity to the swarms that occurred in 2006 and 2007. Akin to the previous swarms in this region, the current one also appears to be triggered following the heavy rainfall. The focal mechanisms of 11 M > 3 earthquakes in this swarm are determined. The mechanisms reveal a reverse regime with ESE-WNW strike. We also used the Differential Interferometric Synthetic Aperture Radar (DInSAR) technique to map the surface deformation in the affected area. An uplift of ∼1.1 to 5.3 mm is noticed to the north of an ESE-WNW trending local lineament in the vicinity of the swarms with subtle fluctuations (ups and downs) during September to December 2019, which gradually stabilised. The seismicity pattern, focal mechanisms and surface deformation lead us to interpret this lineament as the seismogenic fault, which generated this swarm activity.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100118"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000391/pdfft?md5=05290a9ef8647a00fbb83862b6326b36&pid=1-s2.0-S2590056022000391-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47205651","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

Petrology of the Paleogene shoshonitic volcanism in north Sarab area, NW Iran: Geochemical, Ar-Ar dating and Sr-Nd-Pb isotopic constraints 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

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100109

Somaye Heidari , Amir Ali Tabbakh Shabani , Shohreh Hassanpour , Reza Maghdour-Mashhour

{"title":"Petrology of the Paleogene shoshonitic volcanism in north Sarab area, NW Iran: Geochemical, Ar-Ar dating and Sr-Nd-Pb isotopic constraints","authors":"Somaye Heidari , Amir Ali Tabbakh Shabani , Shohreh Hassanpour , Reza Maghdour-Mashhour","doi":"10.1016/j.jaesx.2022.100109","DOIUrl":"https://doi.org/10.1016/j.jaesx.2022.100109","url":null,"abstract":"<div><p>This study reports the earliest presumably known collisional magmatism of the NW Iran–eastern Turkey–Caucasus region from the north of Sarab city in East Azarbaijan province, NW Iran. Volcanic rocks of the area comprise alternating lava flows of mainly alkalibasalt, andesite, trachyandesite, dacite and pyroclastics (tuff and ignimbrite) affiliated with high-K calk-alkaline to shoshonitic magmatic series. Ar–Ar geochronology of the glass, matrix and plagioclase laths revealed crystallization time restricted to Late Eocene to Early Oligocene (34.90–30.69 Ma) which is coincident with the onset of the Arabian-Eurasian continental collision. Geochemical data show LREE enrichment compared with HREE and Nb and Ti depletion, indicating that they are subduction related. The Sr-Nd-Pb isotopic data reflect the incorporation of oceanic sediment into the magma source. We suggest that the volcanic rocks were generated from a metasomatised subcontinental lithospheric mantle source through 5 to 10 vol% partial melting in an extensional back arc basin by the Neotethys slab roll-back under the Iranian plateau.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100109"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000305/pdfft?md5=27201bba02f71496f0bf48bc79b8fe04&pid=1-s2.0-S2590056022000305-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71761321","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 GIS-based assessment of active tectonics from morphometric parameters and geomorphic indices of Assam Region, India 基于gis的印度阿萨姆地区活动构造的形态参数和地貌指数评价

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100115

Laxmi Gupta , Navdeep Agrawal , Jagabandhu Dixit , Subashisa Dutta

{"title":"A GIS-based assessment of active tectonics from morphometric parameters and geomorphic indices of Assam Region, India","authors":"Laxmi Gupta , Navdeep Agrawal , Jagabandhu Dixit , Subashisa Dutta","doi":"10.1016/j.jaesx.2022.100115","DOIUrl":"https://doi.org/10.1016/j.jaesx.2022.100115","url":null,"abstract":"<div><p>Assam region is mainly formed by the deposit and erosion process of the Brahmaputra River. The frequency of seismic events results in landform deformation, which highly influences the drainage basin pattern and causes drainage anomalies, having a subsequent effect on the flood distribution pattern. In the present study, morphometric parameters and geomorphic indices for the Assam region are derived from SRTM DEM data of 30 m resolution using GIS to characterize the tectonic activity, which in turn influences the drainage pattern. The indices are classified into three tectonic activity classes, and the average of the classes is combined to generate the indices of relative active tectonics (IRAT). The four classes of IRAT are defined for the study area as (i) very high; Class 1 (1.57–1.80), (ii) high; Class 2 (1.81–2.06), (iii) moderate; Class 3 (2.07–2.26), and (iv) low; Class 4 (2.27–2.30). Class 1 corresponds to basins 1 and 6. Basins 2, 4, and 5 fall under Class 2. Class 3 consists of basins 7, 8, and 9, and Class 4 comprises basins 3 and 10. Results show that most of the study area lies in very high to moderate active tectonic zones and the identified zones are consistent with significant faults and thrusts present in the basins. The combined approach of GIS-based morphometric and geomorphic study allows for identifying deformed landforms resulting from active tectonics. The results can also be employed for the development of watershed management and sustainable land use planning.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100115"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000366/pdfft?md5=303095e4e8659075daf50a3e24c86975&pid=1-s2.0-S2590056022000366-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71761887","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

Geology and genesis of the Silica-Listwaenite hosted Kaymaz gold deposit, Eskişehir, NW-Turkey: Implications from fluid inclusions and pyrite chemistry 土耳其西北部Eskişehir石英-Listwalite型Kaymaz金矿床的地质和成因：流体包裹体和黄铁矿化学的启示

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100104

Hikmet Yavuz , Yılmaz Demir , Cem Kasapçı , İbrahim Uysal , Cahit Helvacı

{"title":"Geology and genesis of the Silica-Listwaenite hosted Kaymaz gold deposit, Eskişehir, NW-Turkey: Implications from fluid inclusions and pyrite chemistry","authors":"Hikmet Yavuz , Yılmaz Demir , Cem Kasapçı , İbrahim Uysal , Cahit Helvacı","doi":"10.1016/j.jaesx.2022.100104","DOIUrl":"10.1016/j.jaesx.2022.100104","url":null,"abstract":"<div><p>The Kaymaz gold deposit comprises Damdamca, Karakaya, Küçük Mermerlik, and Kızılağıl ore zones within an area underlain by serpentinite and far-traveled Paleozoic-Mesozoic high-pressure metamorphic rocks. The Kızılağıl ore zone is hosted in silicified quartz schist, whereas the others are hosted in silica altered serpentinite. Pyrite-I, arsenopyrite, marcasite, magnetite, pentlandite, millerite, nickeline, bravoite, and fine-grained native gold and silver comprise the first stage, whereas pyrite-II and chalcopyrite represent the second ore stage. The Kaymaz gold deposit has been defined as a silica-listwaenite hosted gold deposit according to host rock relations and mineralogical properties.</p><p>Gold, Ag, and As were found to be highly correlative in whole-rock silica-listwaenite analyses. Higher As content of the pyrite-I, coexisting native gold and silver together with the whole-rock analyses indicate that these metals were derived from the same source, possibly the Kaymaz granite. On the other hand, clathrate formations observed in some of the first stage fluid inclusions confirm that high Ni in the pyrite-I may have been derived from the serpentinites. However, a distinct lack of the separated carbonic phase and clathrate formations in the second stage fluid inclusions as well as their lower <em>T<sub>h</sub></em> and salinities, reveal that higher Co in the pyrite-II possibly dissolved from the metabasites by meteoric solutions.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100104"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000251/pdfft?md5=8fbc9075ed3dd5e830e3c43219a1479b&pid=1-s2.0-S2590056022000251-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42577063","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: 3

Provenance, paleogeographic and paleotectonic interpretations of Oligocene-Lower Miocene sandstones of the western-central Mediterranean region: A review 地中海中西部渐新世-下中新世砂岩物源、古地理及古构造解释综述

Journal of Asian Earth Sciences: X Pub Date : 2022-12-01 DOI: 10.1016/j.jaesx.2022.100124

Salvatore Critelli , Manuel Martín-Martín

{"title":"Provenance, paleogeographic and paleotectonic interpretations of Oligocene-Lower Miocene sandstones of the western-central Mediterranean region: A review","authors":"Salvatore Critelli , Manuel Martín-Martín","doi":"10.1016/j.jaesx.2022.100124","DOIUrl":"10.1016/j.jaesx.2022.100124","url":null,"abstract":"<div><p>The changing nature of detrital signatures in clastic wedges of the Circum-Mediterranean orogenic systems reflect the provenance relations from different source rocks of evolving geo-puzzle terranes, including ophiolite bearing, uplifted continental crust (both shallow to deep crust terranes), volcanic and sedimentary source rocks. We selected here sandstone suites directly occurring over the Mesomediterranean Micropaleoplate during the final stages of closure of the western-southern Tethyan realm. They are unconformably over the internal domains of the Circum-Mediterranean thrust belts, and include Oligocene-to-lower Miocene siliciclastic formations of the Betic Cordillera (As, Bosque, Río Pliego, El Niño, Ciudad Granada, Fuente-Espejos, Alozaina and Viñuela fms), Rif Chain (Fnideq and Sidi Abdeslam fms), and Calabrian terranes (Paludi, Pignolo and Stilo Capo d'Orlando fms). All these sandstone suites range from quartzolitic to quartzofeldspathic detrital modes reflecting close relations with their Paleozoic metasedimentary and plutonic source rocks and their related Mesozoic sedimentary covers. Marked differences have been recognized from western (Betic-Rif) to eastern (Calabria) portions in terms of detritic suites. Detrital suites of the Betic-Rif portions reflect a transition between a craton, transitional and recycled orogenic provenance type. Contrarily, detrital suites of the Calabria portions reflect their transition from transitional continental to basement uplift orogenic provenance reflecting deposition in wedge-top basins during final subduction of the MFB below the MM and the opening of the Mediterranean basin as a backarc.</p></div>","PeriodicalId":37149,"journal":{"name":"Journal of Asian Earth Sciences: X","volume":"8 ","pages":"Article 100124"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590056022000457/pdfft?md5=047b1d65f734f7ef039ef98751613a7e&pid=1-s2.0-S2590056022000457-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43477180","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: 12