A5100349452- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Transportation Planning and Optimization
- Geophysical and Geoelectrical Methods
- Impulse Buying and Technology Impacts
- Aviation Industry Analysis and Trends
- Urban Transport and Accessibility
- Geochemistry and Geochronology of Asian Mineral Deposits
- Seismic Imaging and Inversion Techniques
- Marine and environmental studies
- Mineralogy and Gemology Studies
- Hydrocarbon exploration and reservoir analysis
- Geochemistry and Elemental Analysis
China University of Geosciences (Beijing)
2015-2024
Institute of Geographic Sciences and Natural Resources Research
2024
Chinese Academy of Geological Sciences
2023
Massachusetts Institute of Technology
2020-2022
State Key Laboratory of Geological Processes and Mineral Resources
2022
Ministry of Housing and Urban-Rural Development
2014
The Late Mesozoic-Early Cenozoic geodynamic evolution of the Eastern Pontides Orogenic Belt (EPOB, NE Türkiye) continues to be a topic considerable debate among geoscientists, primarily due complex geological history reflected in region's magmatic, sedimentary, metamorphic and tectonic records. Here we present new geochronological geochemical data from diabase dikes, sills stocks hosted by Pulur Kop ultramafic massifs their Mesozoic cover rocks that are exposed southern part EPOB. Field...
Abstract Compositional changes of magma in space and time can be used to infer mantle dynamics crust‐mantle interaction that are responsible for the generation evolution. This study reveals, first time, presence compositional transition at approximately 84 Ma eastern Pontides arc (NE Turkey), providing important insights into extensive Late Cretaceous magmatism. The granitoids divided geochemically two groups. Group I samples were emplaced 91–86 characterized by low K 2 O/Na O, whereas II...
Abstract Associations between tholeiitic and calc-alkaline arc magmatism with close spatial temporal relationships can provide critical constraints on magma genesis allow the reconstruction of subduction polarity at convergent margins. This study identifies two compositionally distinct intrusive series from Yusufeli region in Eastern Pontides arc, NE Turkey. The rocks complex were emplaced 179–170 Ma are dominated by low- to medium-K series, depleted Hf isotopic compositions. In contrast,...
Abstract In convergent belts, a collision between two blocks can reshape upper mantle geometry and processes responsible for change in mechanisms of magma generation with distinct geochemical compositions. Therefore, identifying the turning point compositional shift provide key constraints on timing, which is decisive building framework regional tectonic evolution. The Eastern Anatolian Plateau composed mosaic rifted assembled through successive collisional events, culminating terminal...
As the domain of artificial intelligence has advanced, integration deep learning techniques into terrain and landform analysis become more prevalent. Nevertheless, many existing methods are fully supervised designed for specific tasks; thus, their transferability is limited massive annotated samples required. This study introduces a geomorphic pretrained model (GeomorPM) capable performing multiple tasks. First, an architecture was that combined convolution-based Vector Quantised-Variational...
赣西北狮子岭岩体是九岭地区新发现的一个花岗岩型锂、钽矿化岩体,前人对其矿物学特征以及锂、钽成矿机制的认识较为薄弱。本文在详细野外工作的基础上,利用光学显微镜、电子探针(EPMA)和激光剥蚀等离子体质谱仪(LA-ICP-MS)对狮子岭岩体中云母族矿物和稀有金属矿物(铌钽锰矿、钽铌锰矿、细晶石、含铌钽锡石和磷锂铝石)的产状、结构、化学成分以及类型进行研究。结果表明:从二云母花岗岩、锂(白)云母碱长花岗岩、黄玉锂云母碱长花岗岩到似伟晶岩,云母的种类发生变化,云母中K/Rb、K/Cs比值逐渐降低,Li、Rb、Cs、F含量逐渐升高,部分云母发育成分环带;铌钽矿物具有较高的Ta/(Ta+Nb)、Mn/(Fe+Mn)值,发育岩浆成因的成分环带;含铌钽锡石具有较高的Nb<sub>2</sub>O<sub>5</sub>+Ta<sub>2</sub>O<sub>5</sub>含量;在锂(白)云母碱长花岗岩、黄玉锂云母碱长花岗岩和似伟晶岩中,细晶石和磷锂铝石常与钠长石及锂云母等矿物共生。据此认为,狮子岭岩体中的云母族矿物存在两种演化序列,即铁叶云母→黑鳞云母→铁锂云母→锂云母和白云母→锂白云母(铁锂...
The Yongfeng composite granitic pluton, located in the southern section of Nanling area, is composed and Longshi biotite monzonitic granites. In order to reveal genesis this pluton its relationship with mineralization, study conducted zircon U-Pb dating, whole-rock major trace element analysis, electron probe analysis. results show that rich silicon alkali, weakly peraluminous, poor calcium iron. It shows enrichment light rare earth elements a significant fractionation heavy elements. also...