Article
Geochemistry & Geophysics
Xue-Bing Zhang, Feng-Mei Chai, Chang-Jia Bao, Dong-Mei Qi
Summary: The Jia'erbasidao deposit in the South Altay of Northwest China is a Fe skarn deposit, mainly composed of granodiorite and porphyritic biotite monzogranite formed in the Early Devonian and Early Permian, with moderately peraluminous characteristics and complex magma sources.
Article
Geology
Wenjia Wang, Xiaowei Li, Wanfeng Chen, Liang Qiu, Yihu Zhang, Zhixiong Zhao
Summary: This study presents a comprehensive analysis of zircon U-Pb, Lu-Hf isotopic, and geochemical data from six Paleozoic granitic plutons in the northern Beishan Orogenic Collage (NBOC). The results show that the Precambrian crustal basement is the main source for the Paleozoic granitoids in the southern Central Asian Orogenic Belt (CAOB), while the Carboniferous granitoids in the Heiyingshan arc (HYA) have a dominant contribution from juvenile materials. Three magmatic pulses from the Ordovician to Carboniferous were identified in the NBOC, and the nature of granitoids is influenced by systematic basement differences.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geology
Xue-Bing Zhang, Feng-Mei Chai, Wen Wang, Dong-Mei Qi, Ying-Ting Liu
Summary: This study analyzes the W polymetallic skarn mineralization in the Bastielieke deposit in Northwest China. The research found that the mineralization in the deposit is mainly controlled by high fractional crystallization, and the contribution of magma source and oxidation state cannot be neglected.
ORE GEOLOGY REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Abdullah Sar, Sevcan Kurum, Ahmet Feyzi Bingol
Summary: This study investigates the magmatic evolution of the Eastern Pontides orogenic belt in northeastern Turkey using new zircon U-Pb ages, Lu-Hf isotopes, and whole-rock geochemical and Sr-Nd isotopic analyses. The results suggest a heterogeneous magma source, possibly derived from a juvenile lower crust. Additionally, the magmatism in the area is associated with the collision of the Anatolide Taurid Platform with the Pontides.
JOURNAL OF EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
LongXiang Quek, Yu-Ming Lai, Azman A. Ghani, Muhammad Hatta Roselee, Hao-Yang Lee, Yoshiyuki Iizuka, Mohd Rozi Umor, Mark Pecha, Yu-Ling Lin, Rezal Rahmat, Azmiah Jamil
Summary: The geological development history of the Malay Peninsula is complex, and the different Hf isotopic compositions of magmatic zircons in different regions reflect different geological evolutionary processes, revealing the trajectory of supercontinent evolution.
Article
Geosciences, Multidisciplinary
Ping Yang, Meifeng Shi, Fuwen Tan, Sudhir Rajaure, Ganesh N. Tripathi, Lei He, Zaihui Li, Wangzhong Zhan
Summary: The Lesser Himalayan Belt in the northern margin of Indian Shield contains sedimentary and magmatic records related to the Columbia supercontinent. Through detailed geological investigations and zircon dating, it is suggested that the Palaeoproterozoic magmatism in this region may have formed within subduction-related tectonics associated with the assembly of the Columbia supercontinent.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Shijie Zhang, Xiumian Hu, Jinrong Zhang, Qing Li, Yiwei Xu, Yuyang Yu, Liqin Han
Summary: A database of detrital zircon U-Pb ages and Hf isotope analyses has been compiled for the Tarim, West Kunlun, Pamir, Tajik and Tianshuihai terranes, consisting of 35,281 U-Pb ages and 4,181 Hf isotope analyses. The database provides detailed information on literature sources, sample details, regional geology, geographic coordinates, and analytical parameters for each data point, facilitating data review, processing, analysis, and utilization. The database is built on the Deep-time Digital Earth platform and has an open database update system for sharing and collaborative contributions.
GEOSCIENCE DATA JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Wentao Yang, Qiang Li, Jianghai Yang, Te Fang, Rui Ma
Summary: The construction of detrital zircon databases is crucial for Earth science research. A comprehensive dataset of U-Pb ages and Hf isotopic compositions of detrital zircons from Paleozoic-Mesozoic strata in the North China Block was compiled, revealing five age groups and providing valuable information for tectono-sedimentary and crustal evolution studies.
GEOSCIENCE DATA JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Ruihong Chang, Franz Neubauer, Yongjiang Liu, Sihua Yuan, Johann Genser, Qianwen Huang, Qingbin Guan, Shengyao Yu
Summary: The pre-Alpine basement of the Austroalpine mega-unit in the Alps is composed of a heterogeneous series of continental units, island arcs, ophiolites, subduction meacute accent langes, accretionary wedges, and seamounts affected by different metamorphic grades. The complex tectonic evolutionary histories and remolten sources of different ages in the pre-Alpine complexes likely assembled not earlier than the Late Permian or Early Triassic, representing multiple locations before final accretion.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geochemistry & Geophysics
Jian Zhang, Yanchen Yang, Shijiong Han, Wukeyila Wutiepu
Summary: This study presents a systematic petrogeochemical analysis of the monzogranite intrusion in the Chang'anpu Molybdenum deposit and compares it with other porphyry deposits in the region. The results show that the monzogranite formed in the middle Jurassic, underwent fractional crystallization, and belongs to the highly fractionated I-type. The study also suggests that the formation of the monzogranite intrusion is related to the partial melting of the juvenile lower crust derived from the Mesoproterozoic depleted mantle, and it occurred in an active continental margin setting associated with westward subduction of the Paleo-Pacific plate beneath the Eurasian plate.
Article
Geochemistry & Geophysics
Myoung Jung Kim, Youngji Ha, Ji Eun Choi, Kye-Hun Park, Yong-Sun Song, Shuwen Liu
Summary: The Seochangni Formation in central South Korea is characterized by a main detrital zircon age range of Late Paleoproterozoic to Mesoproterozoic, with a lack of older age components typically found in basement rocks of the Korean peninsula. This suggests a correlation with similar age patterns in other regions, indicating a common crustal evolution since the Paleoproterozoic.
Article
Geosciences, Multidisciplinary
Niloofar Nayebi, Dariush Esmaeily, Massimo D'Antonio, Xiao-Ping Xia, Valeria Di Renzo, Bernd Lehmann, Ryuichi Shinjo, Shahrouz Babazadeh, Reza Deevsalar, Soroush Modabberi
Summary: This study investigates the tectono-magmatic evolution of Central Iran in the late Proterozoic-early Paleozoic times through geochemical and isotopic analysis of monzonite to quartz monzonite from the Iron Anomaly 21-A drill core in the Bafq metallogenic province. The rocks show characteristics typical of continental arcs and have zircon U-Pb ages consistent with the Cadomian basement age and the subduction along northern Gondwana in the early Paleozoic. The isotopic signatures indicate variable contamination by Neoproterozoic continental crust and suggest a setting of back-arc continental rifting for the late Neoproterozoic to early Paleozoic magmatism in the Bafq province.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geology
Long Chen, Chris Yakymchuk, Kai Zhao, Zifu Zhao, Dongyong Li, Peng Gao, Yixiang Chen, Guochao Sun, Zhibin Liu
Summary: Radiogenic Hf isotope disequilibrium during crustal anatexis complicates petrogenetic studies. Garnet behavior in granitoid sources plays a crucial role in isotopic decoupling between residue and melt. Covariation between (Gd/Lu)N ratios and eHf(t) reflects different garnet modal contents during anatexis.
Article
Geochemistry & Geophysics
Deepa Arya, Saurabh Gupta, Santosh Kumar, Xisheng Xu
Summary: The study focuses on the early Paleoproterozoic granitoids at Malanjkhand and surrounding regions, known as Malanjkhand granitoids (MG), hosting Cu (+/- Mo +/- Au) mineralization. The geochemical and isotopic analyses suggest that the MG was formed by interactions between mantle-derived mafic melt and felsic melt derived from pre-existing continental crust. The magmatic pulses forming the MG at 2.45-2.50 Ga, along with synchronous volcano-plutonic complexes from the Dongargarh region, played a significant role in the rapid crustal growth of the Bastar Craton around 2.5 Ga.
Article
Geosciences, Multidisciplinary
Lei Zhang, Tao Wang, Jian-jun Zhang, Xin -jun Shi, Hai-dong Ren, Qi-di Yang, Ying Tong, Lei Guo
Summary: This study presents a compilation of zircon U-Pb age and Hf isotopic data from the granitoids in the Alxa area. The results show that the granitoids in the central Alxa area have juvenile isotopic features, while the granitoids in the western Alxa area have ancient isotopic features. Based on these findings, it is inferred that there is a boundary between the North China Craton and the Central Alxa Orogenic Belt in the Alxa area.