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Journal of Earth Science 2024年第3期35卷 812-827页

作者： Peiwen Liu xiaozhong ding Yanxue Liu Jibiao Zhang Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China School of Civil and Hydraulic Engineering Xichang UniversityXichang 615000China

In situ zircon U-Pb geochronological and Lu-Hf isotope studies of detrital zircons from Late Mesoproterozoic to Early Neoproterozoic sedimentary units on the southwestern margin of the Yangtze Block have important implications for the tectonic evolution of the Yangtze *** Huili Group contains zircons whose ages are mainly Late Archean to Mesoproterozoic(2650-2450,2100-1800,and 1350-1150 Ma).The Dengxiangying Group has one major age population of 1900-1600 Ma,and two subordinate age populations of 1350-1100 and 2300-2000 *** Group sedimentary rocks have a zircon age population mainly in the range of 970-850 Ma,contemporaneous with the ages of widespread arc-related magmatism in the western Yangtze *** these results with previous work,the Huili and Dengxiangying groups were most likely deposited during ca.1160 to 1000 Ma in an intra-continental rift basin setting,while the Yanbian Group accumulated during>920 to 782 Ma in a back-arc basin setting at the southwestern margin of the Yangtze *** addition,all these results further suggest a tectonic transition from a continental rift basin to a convergent environment at the southwestern margin of the Yangtze Block at 1000-970 Ma.

关键词： Late Mesoproterozoic Early Neoproterozoic zircon U-Pb age Lu-Hf isotope southwestern Yangtze Block geochronology

A lunar time scale from the perspective of the Moon’s dynamic evolution

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Science China Earth Sciences 2024年第1期67卷 234-251页

作者： Dijun GUO Jianzhong LIU James WHEAD Fuqin ZHANG Zongcheng LING Shengbo CHEN Jianping CHEN xiaozhong ding Jinzhu JI Ziyuan OUYANG State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Center for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Department of Earth Environmental and Planetary SciencesBrown UniversityProvidence RI 02912USA Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China College of Geoexploration Science and Technology Jilin UniversityChangchun 130026China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China School of Resources and Environmental Engineering Inner Mongolia University of TechnologyHohhot 010051China Center for Excellence in Comparative Planetology Chinese Academy of SciencesHefei 230026China

A geologic time scale is a chronological system that separates the geological strata of a planetary body into different units in temporal sequence and shows its progressive *** time scale of the Moon was established a half-century ago during the telescopic-early Apollo exploration era,using data with limited spatial coverage and *** past decades have seen a wide array of studies,which have significantly extended our understanding of global lunar geologic *** on a comprehensive review of lunar evolution with respect to the dynamical changes,we propose two major updates to the current lunar time scale paradigm to include the evolution of both endogenic and exogenic dynamic forces now known to have influenced early lunar ***,based on the temporal interplay of exogenic and endogenic processes in altering the Moon,we defined three Eon/Eonothem-level units to represent three dynamical evolutionary ***,the pre-Nectarian System is redefined and divided as the magma ocean-era Magma-oceanian System and the following Aitkenian System beginning with the South Pole-Aitken *** ejecta of this basin,Das Formation,was deposited on the primordial lunar crust as the oldest stratum produced from exogenic *** updated lunar time scale,facilitated by the post-Apollo exploration and research advances,provides an integrated framework to depict the evolution of the Moon and has important implications for the geologic study of other terrestrial planets.

关键词： The Moon Geologic time scale Evolution history Endogenic process Exogenic process

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月球背面加加林地区地质及演化特征

地质力学学报 2024年第3期30卷 519-534页

作者：邵天瑞韩坤英金铭石成龙庞健峰丁孝忠中国地质科学院地质研究所北京100037 中国地质调查局全国地质编图研究中心北京100037

以月球背面加加林地区为研究对象,采用多源遥感数据解译,通过地质要素定量统计、分布特征与成因分析等研究方法,揭示了月球背面典型区域的地质特征,进而探讨了加加林地区区域地质演化历史,初步建立了该区地质特征与月球演化过程之间的... 详细信息

以月球背面加加林地区为研究对象,采用多源遥感数据解译,通过地质要素定量统计、分布特征与成因分析等研究方法,揭示了月球背面典型区域的地质特征,进而探讨了加加林地区区域地质演化历史,初步建立了该区地质特征与月球演化过程之间的联系。研究结果表明:区内发育的全月最长深部断裂的形成为南极艾肯撞击事件与月球热膨胀等内外应力共同作用的结果;自南极-艾肯盆地向外延伸的多处月壳厚度的线性异常延伸至月球正面各大盆地,说明在月球深部,月球背面南极-艾肯盆地的影响范围可以辐射到月球正面单元;月球背面加加林地区撞击坑数量与面积的变化规律与月球所处的地月系及太阳系演化进程有关;撞击坑定量统计结果及玄武岩单元定年结果表明,艾肯纪至雨海纪是加加林地区外动力地质作用的活跃时期,雨海纪是其内动力地质作用的活跃时期。

关键词：月球地质加加林盆地多源遥感解译地质演化

Geochronology, Geochemistry and Sr-Nd-Hf Isotopes of Early–Middle Triassic Adakitic Plutons in Central-eastern Jilin Province, NE China: Constraints on the Non-synchronous Closure of Paleo-Asian Ocean

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1615-1630页

作者： SHI Chenglong ding xiaozhong ZHOU Xiaodong NIE Lijun ZHANG Jibiao Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Survey of Regional Geological and Mineral Resurce of Jilin Province Changchun 130022China

The Changchun–Yanji suture zone(CYSZ) in NE China is considered as the suture between the North China Craton(NCC) and Central Asian Orogenic Belt(CAOB). The geochronology, geochemistry and Sr-NdHf isotopes of Early–Middle Triassic adakitic plutions from the CYSZ, are presented in this paper to discuss their petrogenesis and tectonic setting, as well as to constrain the timing and style of the Paleo-Asian Ocean's final closure. In Early Triassic, the Dayushan pluton(ca. 250 Ma) from western CYSZ has negative ε_(Nd)(t) values, bidirectional provenances(NCC and CAOB) of ε_(Hf)(t), which are formed in a collision tectonic setting. In contrast, in eastern CYSZ, the early Triassic samples in Liangshan(ca. 242 Ma) were high Mg~# values, positive ε_(Nd)(t), single provenances(CAOB) of ε_(Hf)(t) resulting from a subduction setting. In the Middle Triassic, the Atype granites in western CYSZ are found in previous studies representing a post-collisional extensional environment, whereas syn-collisional Lianyanfeng granites(ca. 237 Ma) in eastern CYSZ with low ISr and large scale ε_(Nd)(t) and ε_(Hf)(t) values from bidirectional provenances(NCC and CAOB), represent a collisional setting. The Paleo-Asian Ocean's occurred in a scissor-like fashion along the CYSZ during the Triassic period.

关键词： granitoids tectonic evolution Paleo-Asian Ocean Central Asian Orogenic belt

Two-episode Tectono-thermal Events of the Heyuan Fault in Late Cretaceous and Oligocene and their Tectonic Implications, Southernmost South China Block

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Acta Geologica Sinica(English Edition) 2022年第2期96卷 447-459页

作者： WANG Qiangmao LI Hailong LI Tingdong ding xiaozhong ZHEN Junwei ZHANG Min FAN Yanxia Chinese Academy of Geological Sciences Beijing 100037China School of Earth and Space Science Peking UniversityBeijing 100871China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China Team-7 of Guangdong Bureau of Geology HuizhouGuangdong 516008China Team-935 of Guangdong Non-Ferrous Metals Geological Exploration Bureau HuizhouGuangdong 516001China

The Heyuan Fault, is one of the main NE-trending faults in the southernmost South China Block and is close to the northernmost South China Sea to the south. The fault features multi-stage deformation and controlled the formation of late Cretaceous to Cenozoic basins. Based on detailed field investigations and comprehensive geochronological research, including zircon U-Pb, Rb-Sr isochron, zircon U-Th-He dating, two episodic tectono-thermal events are recognized. The first occurred during ~79 Ma to 66 Ma, which is characterized by large-scale quartz-fluid emplacement. The other occurred at ~34 Ma, which features the eruption of a set of basalts. The two events show a changing on material source from siliceous hydrotherm to basalt magma, supporting obvious lithospheric thinning of the southernmost South China Block, which shed light on the geological evolution and the interaction mechanisms between the SCB and the northern South China Sea since the Late Cretaceous.

关键词： tectono-thermal events Heyuan Fault Heyuan Basin Guangdong Province South China Block South China Sea

New Discovery of Molar Tooth Structures in the Kangjia Formation at Benxi,Liaoning and its Significance

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Acta Geologica Sinica(English Edition) 2017年第3期91卷 1139-1140页

作者： WU Hao ding xiaozhong LIU Yanxue KUANG Hongwei Institute of Geology Chinese Academy of Geological Sciences

Objective The Jilin-Liaoning area has widely spread Meso- and Neoproterozoic sediments and is always a focused area for researching Precambrian geology. Previous study has achieved a series of results about Neoproterozoic stratigraphy in this area, but the lack of precise geochronological data and signs of stratigraphic correlation has resulted in the long controversial stratigraphic age and regional correlation. During recent years,

关键词： of or is in New Discovery of Molar Tooth Structures in the Kangjia Formation at Benxi,Liaoning and its Significance

Zircon U–Pb Geochronology and Petrogenesis of Early–Midlle Permian Arc–Related Volcanic Rocks in Central Jilin: Implications for the Tectonic Evolution of the Eastern Segment of Central Asian Orogenic Belt

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Acta Geologica Sinica(English Edition) 2020年第4期94卷 1207-1222页

作者： SHI Chenglong ding xiaozhong LIU Yanxue ZHOU Xiaodong NIE Lijun Institute of Geology Chinese Academy of Geological Sciences Beijing 100037China Survey of Regional Geological and Mineral Resource of Jilin Province Changchun 130022China

This paper presents age and geochemical data of a recently identified Late Paleozoic volcanic sequence in central Jilin Province, with aims to discuss the petrogenesis and to constrain the tectonic evolution of the Central Asian Orogenic Belt in this area. Firstly, the volcanic rocks have zircon U-Pb ages of 290–270 Ma. Secondly, they are characterized by(a) ranging in composition from the low-K tholeiite series to high-K calc-alkaline series;(b) enrichment in light rare earth elements and depletion of heavy rare earth elements, with negative Eu anomalies;and(c) negative Nb, Ta, and Ti anomalies. Finally, the volcanic rocks yield εHf(t) values of +7.1 to +17. These data suggest that the central Jilin volcanic rocks were possibly derived from predominant partial melting of a depleted lithospheric mantle that might have been modified by subducted slab–derived fluids. Combined with previous studies, the Late Paleozoic–Early Mesozoic magmatism in Central Jilin can be divided into two stages:(a) a volcanic arc stage(290–270 Ma) represented by low-K to high–K, tholeiite to calc–alkaline plutons and(b) a syn–collisional stage(260–240 Ma) represented by high-K calc–alkaline I-type granites. Furthermore, the timing and the tectonic setting of the above magmatic rocks show that the arc was probably produced by the northward subduction of the Paleo-Asian Ocean and that the final closure of the Paleo-Asian Ocean occurred prior to the Early Triassic.

关键词： volcanic rocks zircon U-Pb age tectonic evolution Paleo–Asian Ocean

Discovery of Paleogene palynological assemblages from the Wanbaogou Group-complex in western part of the Eastern Kunlun orogenic belt and its geological significance

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Science China Earth Sciences 2006年第4期49卷 358-367页

作者： GUO Xianpu WANG Naiwen ding xiaozhong ZHAO Min WANG Daning Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

The Wanbaogou Group-complex is a suit of mélange aggregation of the Eastern Kunlun orogenic belt, which is divided into two parts, i.e. the exotic blocks and the matrix strata. Based on stromatolite fossils yielded in the exotic blocks, the age of this group-complex was once defined to the Precambrian. Recently, two Paleogene palynological assemblages have been found in samples from the matrix strata of the Upper Part in this group-complex by the authors: in ascending order, the Al- nipollenites-Quercoidites assemblage of Late Eocene and the Caryapollenites-Pinuspollenites as- semblage of Early Oligocene. Those results show that the matrix strata of this mélange were mainly formed in Paleogene, and the event causing mixture should be a Himalayan Movement Phase. This paper is designed to provide some detailed evidence for determining the age of the matrix strata in this group-complex based upon study at the Kunlunqiao Section, which would be of important geo- logical significance for further understanding this group-complex as a suit of mélange aggregation and establishing or improving the stratigraphic framework of the studied region. The new finding will cer- tainly benefit from now on the investigation on geotectonic and sedimentary evolution of Eastern Kunlun.

关键词： Wanbaogou Group-complex, Paleogene, palynological assemblages, mélange aggregation, the Eastern Kunlun orogenic belt.

Digital Geological Mapping of Sinus Iridum Area of the Moon Based on the Chang'E-I Data

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Acta Geologica Sinica(English Edition) 2013年第6期87卷 1643-1657页

作者： ding xiaozhong HAN Kunying PANG Jianfeng WANG Liang HAN Tonglin JU Yuanjing ding Weicui Institute of Geology Chinese Academy of Geological Sciences Chinese Academy of Geological Sciences

Based on the CCD images,IIM data and DEM data of China＇s lunar exploration project （Chang＇E-Ⅰ） and related processed and analytic results,an integrated study of regional geology of Sinus Iridum and its adjacent area was conducted,and a series of relevant researches and analyses were carried out,including analysis of impact craters and their extrusive and accumulative materials,division of stratigraphic and tectonic units and classification of rock types,integrated analysis of chronology and lunar evolution *** consideration of crater＇s shape features,quantity and preserving status of filling materials,the lunar impact craters can be divided into 7 types and 11 subtypes,and the accumulative materials of craters are divided into 6 types and 9 accumulative *** to the content and distribution of TiO2 and image characteristics,the basalts are divided into high-TiO2,medium-TiO2 and low-TiO2 *** was made on division of tectonic units and evolution features in the study *** geological map of the Sinus Iridum Quadrangle （LQ-4） at a scale of 1∶2.5 M was preliminarily compiled with the ArcGIS system,and the spatial database of the map was *** technical specification,procedure and method for lunar geological mapping have been worked out,so as to lay a foundation for the forthcoming geological mapping of the global Moon in China by using the data of Chang＇E-Ⅱ and also for comprehensive study and geological mapping of other celestial bodies in the future.

关键词： The Moon Sinus Iridum Area Chang'E-Ⅰ geological mapping geological map database

Geochronology and Geochemistry of the 890 Ma I-Type Granites in the Southwestern Yangtze Block:Petrogenesis and Crustal Evolution

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Journal of Earth Science 2020年第6期31卷 1216-1228页

作者： Jibiao Zhang xiaozhong ding Yanxue Liu Heng Zhang Chenglong Shi Yu Zou Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China College of Geoscience and Surveying Engineering China University of Mining&TechnologyBeijing 100083China

The tectonic evolution of the southwestern Yangtze Block during the Early Neoproterozoic period is still controversial because of the limited quantities of 1000–860 Ma magmatic *** this study,our new LA-ICP-MS zircon U-Pb dating results demonstrate that the Yanbian granodiorites in the southwest Yangtze Block were emplaced at 894.6±7.4 Ma,representing the product of an 894 Ma *** Yanbian granodiorites are metaluminous to weak peraluminous with A/CNK values of 0.8–1.1,resembling Itype *** are characterized by right-inclined REE patterns with moderate to insignificant negative Eu anomalies(δEu=0.6–0.9).Their primitive mantle-normalized trace element patterns are characterized by depletion of Nb,Ta and Ti and weakly enrichment of *** the positive whole-rockεNd(t)(+5.8 to+6.8),we propose that these granodiorites originated from the partial melting of juvenile mafic lower *** Yanbian I-type granitoids have low Y and Nb contents similar to volcanic arc igneous rocks in the Y-Nb plot for tectonic *** conclusion,Early Neoproterozoic Yanbian granodiorites have generated in a compression setting in an active continental *** with previous studies from the southwestern Yangtze Block,we suggest that the 894 Ma subduction-related Yanbian granodiorites represent the early stage of subduction at the southwestern margin of the Yangtze Block.

关键词： I-type granites zircon U-Pb dating Early Neoproterozoic subduction southwestern Yangtze Block