A5016221427- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- High-pressure geophysics and materials
- Geological and Geophysical Studies
- Planetary Science and Exploration
- Hydrocarbon exploration and reservoir analysis
- Astro and Planetary Science
- Geological Studies and Exploration
- Geochemistry and Geochronology of Asian Mineral Deposits
- Space Exploration and Technology
- Geochemistry and Elemental Analysis
- Space Science and Extraterrestrial Life
- Paleontology and Stratigraphy of Fossils
- Geoscience and Mining Technology
- Geological Modeling and Analysis
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Remote Sensing and Land Use
- Energy, Environment, Agriculture Analysis
- Marine and coastal ecosystems
- Advanced Computational Techniques and Applications
- Space exploration and regulation
- Geomechanics and Mining Engineering
Chinese Academy of Geological Sciences
2012-2024
China Geological Survey
2024
Institute of Geology and Geophysics
2024
Czech Academy of Sciences, Institute of Geology
2002-2010
Henan Institute of Geological Survey
2010
Guizhou Electric Power Design and Research Institute
2010
Chongqing University
2008
China University of Geosciences (Beijing)
2002
Abstract: High‐quality zircon U‐Pb ages acquired from Meso‐ and Neoproterozoic strata in North China recent years has provided a high‐resolution chronostratigraphic framework for dating. A basis of this high‐level system provides the foundation global Precambrian study stratigraphic correlation so geological studies have focused attention on systemic SHRIMP chronology time origin overlying Changcheng System is given new dating Qianxi Complex diabase Chuanlinggou Formation....
华北克拉通南缘结晶基底之上广泛发育中-新元古代（1800~542Ma）盖层岩系，但由于缺少精确的同位素年龄数据，其地层划分和对比方案一直存在较大的争议。本次工作在河南省栾川县龙家园组底部和下部各发现了一套凝灰岩，进而获得了1594±12Ma和1541±8Ma的SHRIMP锆石U-Pb年龄，首次精确标定了该地区龙家园组的形成时限，该组底界的时代接近1600Ma。龙家园组沉积时代为中元古代蓟县纪最早期；在河南省汝阳、汝州、鲁山地区的洛峪口组凝灰岩中获得了1596±7Ma、1596±15Ma、1608±17Ma和1620±16Ma的SHRIMP锆石U-Pb年龄，进一步精确标定了洛峪口组的形成时代，洛峪口组形成于长城纪的末期。结合汝阳群云梦山组碎屑锆石U-Pb年龄结果，汝阳群-洛峪群的形成时限约为1700~1600Ma。官道口群应是汝阳群之后的地层系统，而不是早前认为的与之同期的地层。
Abstract: New dates from Meso‐ and Neoproterozoic strata contribute to the recently defined Precambrian stratigraphical timescale of China agreed by Subcommission on System, National Commission Stratigraphy Nov. 24, 2009. First, age range Changcheng including Changzhougou, Chuanlinggou, Tuanshanzi Dahongyu formations has been constrained 1.8–1.6 Ga. Second, Jixian System Gaoyuzhuang, Yangzhuang, Wumishan, Hongshuizhuang Tieling 1.6–1.4 Third, an as‐yet unnamed (undefined) system (1.4–1.0 Ga)...
Abstract: In a re‐study of regional geology by the China Geological Survey (CGS), key problem is in stratigraphical division and correlation. According to new isotopic dating Meso‐ Neoproterozoic China, there have been great changes strata correlation tectonic explanation. The authors obtained four zircon sensitive high resolution ion micro‐probe (SHRIMP) U‐Pb datings from bentonite Lengjiaxi Group (822±10 Ma, 823±12 Ma 834±11 Ma) Banxi (802.6±7.6 north Hunan Province, which considered be...
This paper reports in situ U–Pb ages and Hf isotopic data on detrital zircons from Palaeozoic strata central‐eastern Jilin Province, NE China, with the aim of constraining timing final closure Paleo‐Asian Ocean tectonic evolution eastern segment Central Asian Orogenic Belt (CAOB). Zircons Middle to Late Permian Fanjiatun Yangjiagou formations central Province are characterized by four major groups age populations (2.5–2.3 Ga, 1.9–1.7 1.3–1.0 ages). The Paleo‐Mesoproterozoic Cambrian have...
The Tsiolkovsky crater is located on the farside of Moon. It formed in late Imbrian epoch and was filled with a large area mare basalts. Multisource remote sensing data are used to interpret geological features area. Compared previous studies, new chronological model based size–frequency distribution further refine stratigraphic units determine absolute ages basalt units. evolution volcanic activity this discussed. results as follows: Abundances major elements, Th, silicate minerals suggest...
Abstract The stretching process of some Tertiary rift basins in eastern China is characterized by multiphase rifting. A multiple instantaneous uniform model proposed this paper to simulate the formation as rifting cannot be accurately described a simple (one episode) model. study shows that model, combined with back‐stripping technique, can used reconstruct subsidence history and lithosphere, evaluate depth top asthenosphere deep thermal evolution basins. calculated results obtained applying...
This study used spectrometry to determine the spectral absorption of five types mafic-ultramafic rocks from Kaishantun ophiolite suite in Northeast China. Absorption peak wavelengths were determined for peridotite, diabase, basalt, pyroxenite, and gabbro. Glaucophane, actinolite, zoisite, epidote peaks also measured, these distinguish such minerals other associated samples. Combined with their chemical compositions, blueschist facies (glaucophane + chlorite) greenschist (actinolite mineral...
Abstract The Qingbaikouan System is the lowest unit of Neoproterozoic Erathem in Chinese stratigraphic succession, and it now provides a precise geochronological framework geological time scale for mapping stratal correlation China. However, sensitive high‐resolution ion microprobe (SHRIMP) U‐Pb zircon age date (1368±12 Ma) obtained from bentonite Xiamaling Formation indicates that belongs to Mesoproterozoic instead. This change milestone understanding Precambrian Stratigraphic Time Scale...
摘要: 扬子板块西缘新元古代盐边群广泛发育一系列火山岩,其年代学和构造背景对理解扬子板块前寒武纪构造演化具有重要意义.本文获得盐边群乍古组、小坪组、渔门组和荒田组火山岩LA-ICP-MS锆石U-Pb年龄分别为934±5 Ma、863±4 Ma、843±7 Ma和797±9 Ma,精确限制了盐边群时代为934~797 Ma.荒田组玄武岩属于钙碱性N-MORB(正常型洋中脊玄武岩)系列,轻稀土相对亏损、重稀土相对富集,具有中等程度的Nb、Ta负异常和轻微的Ti负异常,εNd(t)值为3.8~4.9.荒田组玄武岩来自以石榴子石和尖晶石为稳定区的地幔橄榄岩10%~20%的部分熔融.构造背景判别图解指示荒田组玄武岩形成于活动大陆边缘弧前盆地.结合前人的研究成果,认为扬子西缘新元古代早-中期存在弧-盆地系统,扬子板块新元古代构造动力学背景应为活动大陆边缘洋-陆俯冲,板块俯冲开始的时间不晚于934 Ma. 关键词: 扬子西缘 / 盐边群 锆石U⁃Pb年龄 地球化学 大地构造背景