A5001520816- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- High-pressure geophysics and materials
- Geochemistry and Elemental Analysis
- earthquake and tectonic studies
- Geological and Geophysical Studies
- Geological Studies and Exploration
- Radioactive element chemistry and processing
China University of Geosciences (Beijing)
2023-2025
Abstract Cenozoic crustal thickening and surface uplift in Pamir, northwest Tibetan Plateau is controlled by India-Asia continental convergence post-collisional subduction processes. However, the nature evolution of subducted lithosphere associated deep dynamic processes remain unclear. In this study, we report new geochemistry, mineral chemistry geochronology for three plutons (Kuzigan, Karibasheng Zankan) eastern Central to constrain their petrogenesis help understand geodynamic LA-ICP-MS...
Abstract The petrogenesis of continental arc magmas provides critical insights into thermal evolution and geodynamics the lithosphere, crust-mantle interaction, deep dynamic processes. In this study, we report new zircon U-Pb ages along with isotopic elemental whole-rock geochemistry, mineral chemistry, Hf-O isotope data for Kalaqigu diorites monzogranites Chinese Wakhan Corridor, South Pamir. Zircon dating indicates that pluton was emplaced in Early Cretaceous (ca. 108–106 Ma). are...
A global change in granitoid compositions from early predominantly sodic tonalite-trondhjemite-granodiorites (TTGs) to later TTGs and more potassic granites occurred during the late Archean, coupled with a major period of crustal maturation. However, detailed relationship between chemical evolution maturing process remains enigmatic. Successive magmatism including Neoarchean high-K Western Shandong Province granite-greenstone belt (WSP) North China Craton thus preserves crucial clues...
西昆仑造山带发育有大量的早古生代岩浆岩, 它们的形成与原特提斯洋俯冲-碰撞密切相关, 然而, 对于这些岩浆岩的岩石成因和形成的构造背景仍然存在较大的争议。本文对西昆仑造山带早古生代阿喀孜二长岩和赛图拉石英闪长岩岩体开展了详细的矿物学、锆石U-Pb年代学、全岩地球化学和Sr-Nd-Hf-O同位素研究, 以探讨这些侵入岩的岩浆源区与成因, 揭示原特提斯洋在这一时期的构造演化过程。这两个岩体的LA-ICP-MS锆石U-Pb年龄分别为456±2Ma和452±2Ma, 指示它们形成于晚奥陶世。阿喀孜二长岩具有富碱(K<sub>2</sub>O+Na<sub>2</sub>O=10.5%~11.8%)、富钾(K<sub>2</sub>O/Na<sub>2</sub>O=1.20~1.44)特征, 相对低MgO(0.89%~0.97%)、TiO<sub>2</sub>(0.42%~0.45 %)含量, 富集Rb、Th、U等大离子亲石元素, 且具有较高的全岩锆饱和温度(<i>T</i><sub>Zr</sub>=814~862℃),...
锡石原位微区U-Pb同位素测年，样品制备简单，具有高空间分辨率、高性价比、高效率等显著优势，是锡多金属矿床直接定年的有效手段。然而，基体效应的影响和标样的缺乏是制约该方法发展的关键。本次研究在He做载气以及加入不同辅助气（N<sub>2</sub>、水蒸气）条件下使用锆石作为外部标准物质对锡石标准和样品进行元素、同位素分馏校准，并采用Tera-Wasserburg图解法和<sup>207</sup>Pb法对普通铅进行校正。分析结果显示，氮气和水蒸气的引入，可以不同程度的提升Pb、U信号强度；3个不同的锡石标准和样品在He做载气及不同辅助气（N<sub>2</sub>、水蒸气）条件下获得的Tera-Wasserburg U-Pb下交点年龄及<sup>207</sup>Pb法普通铅校正后的<sup>206</sup>Pb/<sup>238</sup>U加权平均年龄在误差范围内都与文献报道值一致，并未发现明显基体效应的影响，显示采用锆石标准物质对不同类型锡矿床的锡石样品进行原位LA-ICP-MS U-Pb定年是可行的。;In situ cassiterite U-Pb dating...
Subduction and closure of the Palaeo‐Tethyan ocean in south‐eastern (SE) Tibetan Plateau accounted for amalgamation Indochina Block with Sibumasu Yangtze blocks during Triassic, however, spatial distribution Main nature Ailaoshan this region remain controversial. This is partially due to absence related magmatic records middle‐north segment Lancangjiang tectonic belt (LTZ) consequently, lack regional comparison (ATZ). In contribution, we reported first time presence subduction‐related...