|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The important turning points during evolution of Cenozoic basin offshore the Bohai Sea:Evidence and regional dynamics analysis显示文摘The Cenozoic basin offshore the Bohai Sea underwent a multicycle-rifting during its evolutionary process, which resulted in the multiple unconformities in the strata. The tectonic activities shown by these unconformities have different manifestations and influences on the basin evolution. The authors systematically analyze the tectonic evolution characteristics of the sags off-shore the Bohai Sea with a large set of hydrocarbon exploration data. The analysis reveals that two phases of tectonic activities during the late depositional stage of the third member of Shahejie Formation (about 38 Ma) and the late depositional stage of Dongying Formation (about 24 Ma) reflect the significant changes in the basin's features and structural framework before and after these tectonic activities. As a result, the two phases of tectonic activities are recognized as important turning points (i.e., tectonic transitions) of Cenozoic basin evolution. The regional dynamic backgrounds of the two phases of tectonic transitions are also discussed. It is suggested that the early tectonic transition occurred at about 38 Ma under such regional dynamic back- ground that a huge kinematics adjustment happened between Eurasian Plate and its neighboring plates, i.e., Pacific Plate and Indian Plate. Meanwhile, the Tan-Lu Fault's slip reversed from left lateral to right lateral. The late tectonic transition occurred in late Paleogene (about 24 Ma) and reflected the Himalayan orogeny's influence on the Chinese continent and even the Asian continent; at the same time, the stress field produced by the escape tectonics was related to the Himalayan orogeny, superposed on the pre-existing stress field, and then enhanced the right lateral slip activity of the Tan-Lu Fault. | HUANG Lei LIU ChiYang ZHOU XinHuai WANG YingBin | 2012 | Science China Earth Sciences2012，55，3： | 26 |
| 2 | Origin of gray-green sandstone in ore bed of sandstone type uranium deposit in north Ordos Basin显示文摘Dongsheng sandstone-type uranium deposit is located in the northern part of Ordos Basin, occurring in the transitional zones between gray-green and gray sandstones of Jurassic Zhiluo Formation. Sandstones in oxidized zone of the ore bed look gray-green, being of unique signature and different from one of ordinary inter-layered oxidation zone of sandstone-type uranium deposits. The character and origin of gray-green sandstones are systematically studied through their petrology, mineralogy and geochemistry. It is pointed out that this color of sandstones is originated from secondary oil-gas reduction processes after paleo-oxidation, being due to acicular-leaf chlorite covering surfaces of the sandstone grains. To find out the origin of gray-green sandstone and recognize paleo-oxidation zones in the ore bed are of not only theoretical significance for understanding metallogenesis of this kind of sandstone-type uranium deposit, but also very importantly practical significance for prospecting for similar kind of sandstone-type uranium deposit. | LI ZiYing FANG XiHeng CHEN AnPing OU GuangXi XIAO XinJian SUN Ye LIU ChiYang WANG Yi | 2007 | Science China Earth Sciences2007，50，z2： | 20 |
| 3 | Temporo-spatial Coordinates of Evolution of the Ordos Basin and Its Mineralization Responses显示文摘摘要:Ordos 盆被开发从中间迟了对早白垩纪三叠纪,然后自从迟了的白垩纪,进入了它的以后的改革时期。它的主要身体忍受 intra-cratonic 盆的特征。盆也属于在大规模盆上重叠了的多迭加的盆早并且晚古生代。当前, Ordos 盆成为了剩余盆各种各样的式样的富有经验的改革自从迟了的白垩纪。它建议了有在盆的进化期间存在的构造变丑的至少四个明显的阶段,把进化和沉积划分成四个阶段。优先二个阶段具有最繁荣,在哪个期间湖盆是宽广的,免职范围多于比当前的剩余盆两次大,导致主要含有石油、忍受煤的阶层。二个阶段被分开由地区性高举在区域的变化。在 Yan'an 阶段的结束, depositional 打断和侵蚀正在持续时间的一个短时期。第三是中间 -- 侏罗记并且 Zhiluo 舞台,沉积程度仍然在是宽广的但是湖区域显然被减少。在迟了的侏罗记构造变丑是集中的。当不同厚度的集团企业在东方方面的 foredeep 以内被积累时,一条戳越过水坝落下的水带在盆的西方的边缘上被形成。盆的中央、东方的部分服从于侵蚀和改革。一个地区性的框架与在西方在东方和消沉高举黄河向西在区域形成了。在早白垩纪,沉积广泛地被散布, unconformably 重叠北、南部的边阶上的以前的西方的边缘戳带和山脉。象在 Ordos 盆形成的油,天然气,煤和铀存款那样有丰富的精力资源。产生的主要阶段,矿化作用并且资源有明显的反应的多重精力放在 Ordos 中生代和新生代进化和改革与那些联合关系的连接和结束盆。 | LIU Chiyang ZHAO Hongge ZHAO Junfeng WANG Jianqiang ZHANG Dongdong YANG Minghui | 2008 | Acta Geologica Sinica(English Edition)2008，82，6： | 20 |
| 4 | Characteristics and dynamic settings of the Central-east Asia multi-energy minerals metallogenetic domain显示文摘That more than 82 percent of proved sandstone-type uranium deposits coexist with proved oil-gas or coalfields in the world reflects the fact of coexistence and accumulation of multi-energy minerals including oil, gas, coal and uranium in the same basin. Especially, this phenomenon is most typical in the Central-east Asia energy basins. Across China, Mongolia and some central Asian countries, the giant Central-east Asia metallogenetic domain (CEAMD) stretches more than 6,000 km from Songliao Basin of China in the east to the Caspian Sea in the west. The multi-energy minerals distribution characteristics of the domain include: their spatial distribution is complicated and ordered; the ore-bearing horizon relates closely to the geographical region; the accumulation/mineralization and localization time is the same or close; the occurrence setting and accumulation/mineralization have close correlation; and they have rich provenance for all the minerals. All of these imply that they have close relations between each other under a unified geodynamic background. The exogenetic uranium mineralization process in CEAMD can be divided into five phases using time limits of 100 Ma, (50±2) Ma, 20±(2―4) Ma, 8―5 Ma. The major mineralization periods and their differences in each primary uranium-bearing basin are identical to the oil-gas accumulation and localization periods and phases in the same basin, and are also in response to regional tectonics and controlled in general by the regional geodynamic environment. For industrial application and commercial exploitation, it is suggested that an important period for coexistence, accumulation and localization of oil, gas, coal and uranium and their interaction mainly occur in the late/last and post basin evolution. Through generalized analysis and comparison of accumulation/mineralization environment of the energy basins in CEAMD, the authors propose that the relatively stable regional tectonic background and moderate (weaker) structural deformation probably are necessary for formation, coexistence and preservation of large and medium-scaled sandstone-type uranium ore deposits, oil-gas fields and coalfields, while basins in favor of coexistence and accumulation are those intracratonal, intermediary massif basins and corresponding reformed basins. | LIU ChiYang QIU XinWei WU BoLin ZHAO HongGe | 2007 | Science China Earth Sciences2007，50，z2： | 13 |
| 5 | Migration of Depocenters and Accumulation Centers and its Indication of Subsidence Centers in the Mesozoic Ordos Basin显示文摘与岩性学和岩相在联合基于结构归属的综合学习和原来的盆的特征,中生代 Ordos 盆的沉积起源分析和厚度分发, depocenters 从东南逆时针方向移居了到北方然后到西南从,这被表明中间迟了对早白垩纪三叠纪。有不统一了并且除了在早白垩纪前的几个小孤立的累积中心的大规模累积中心。相对厚的阶层的带很好在几个阶段在西方的盆被开发的原因是这个区域在原来的 Ordos 盆的西方边界附近,有丰富的沉积供应,水动力学效果是强壮的。因此,他们代表本地累积中心。直到早白垩纪, depocenters,累积中心和沉淀,中心在 Ordos 盆的西南部分作为一个实体被迭加。直到中间的侏罗记的结束,仍然在那里出现了在到黄河的西方的剩余盆的一个 paleogeographic 和 paleostructural higher-in-west 和 lower-in-east 框架。从对中间的侏罗记晚三叠纪的中间的 Ordos 盆的 depocenters 一致地被迭加。在 depocenters 和他们的邻居的中生代和古生代的阶层的相对高的热成熟在这些区域建议活跃深效果。通常,在有高热的进化区域的几个时期和他们的一致性的 depocenters 的重叠揭示沉淀进程的控制。因此, depocenters 可以代表沉淀中心的位置。沉淀中心(或 depocenters ) 位于大规模 cratonic Ordos 盆的南方。这与低岬的曲折沉淀被联系,源于强壮的集中和与 Qinling 造山运动同时期的 orogenic 活动。 | ZHAO Junfeng LIU Chiyang WANG Xiaomei ZHANG Can | 2009 | Acta Geologica Sinica(English Edition)2009，83，2： | 12 |
| 6 | Apatite Fission Track Evidence of Uplift Cooling in the Qiangtang Basin and Constraints on the Tibetan Plateau Uplift显示文摘The Qiangtang basin is located in the central Tibetan Plateau. This basin has an important structural position,and further study of its tectonic and thermal histories has great significance for understanding the evolution of the Tibetan Plateau and the hydrocarbon potential of marine carbonates in the basin. This study focuses on low temperature thermochronology and in particular conducted apatite fission track analysis. Under constraints provided by the geological background,the thermal history in different tectonic units is characterized by the degree of annealing of samples,and the timing of major(uplift-erosion related) cooling episodes is inferred. The cooling history in the Qiangtang basin can be divided into two distinct episodes. The first stage is mainly from the late Early Cretaceous to the Late Cretaceous(69.8 Ma to 108.7 Ma),while the second is mainly from the MiddleLate Eocene to the late Miocene(10.3 Ma to 44.4 Ma). The first cooling episode records the uplift of strata in the central Qiangtang basin caused by continued convergent extrusion after the BangongNujiang ocean closed. The second episode can be further divided into three periods,which are respectively 10.3 Ma,22.6–26.1 Ma and 30.8–44.4 Ma. The late Oligocene-early Miocene(22.6–26.1 Ma) is the main cooling period. The distribution and times of the earlier uplift-related cooling show that the effect of extrusion after the collision between Eurasian plate and India plate obviously influenced the Qiangtang basin at 44.4 Ma. The Qiangtang basin underwent compression and started to be uplifted from the middle-late Eocene to the early Oligocene(45.0–30.8 Ma). Subsequently,a large-scale and intensive uplift process occurred during the late Oligocene to early Miocene(26.1–22.6 Ma) and the basin continued to undergo compression and uplift up to the late Miocene(10.3 Ma). Thus,uplift-erosion in the Qiangtang basin was intensive from 44.5 Ma to about 10 Ma. The timing of cooling in the second episode shows that the uplift of the Qiangtang basin was caused by the strong compression after the collision of the Indian plate and Eurasian plate. On the whole,the new apatite fission-track data from the Qiangtang basin show that the Tibetan Plateau started to extrude and uplift during 45–30.8 Ma. The main period of uplift and formation of the Tibetan Plateau took place about 22.6–26.1 Ma,and uplift and extrusion continued until the late Miocene(10.3 Ma). | REN Zhanli CUI Junping LIU Chiyang LI Tiejun CHEN Gang DOU Shuang TIAN Tao LUO Yating | 2015 | Acta Geologica Sinica(English Edition)2015，89，2： | 11 |
| 7 | Basical characteristics of fluid geologic process of interlayer oxidation zone sandstone-typeuranium deposit显示文摘This paper reveals the physicochemical properties such as component, formulation, genesis, tem- perature, pH, Eh, salinity and pressure of all main alteration fluid of interlayer oxidation zone sand- stone-type uranium deposits after studying the geologic process and geochemistry of internal typical sandstone-type uranium deposits such as Shihongtan deposit in the Turpan-Hami basin, 512 deposit in the Yili basin, Dongsheng deposit in the Ordos basin. The composition of fluid can be divided into two parts based on the analysis of inclusion: one can be affirmed as atmospheric water with ordinary temperature epigenesist according to the character of hydrogen and oxygen isotope of inclusion, the other is natural gas containing gaseous hydrocarbon like CH4, and CO2 as well as a little H2S, CO, H2, N2 and so on, it always contains a small quantity of hydrocarbon liquid in petroliferous basins. The fluid property of oxidation alteration zone is always oxidation alkaline, and neutrality or weak acid-weak alkaline and reducibility during the metallizing process, but at secondary reduction or deoxidization zone it becomes strong reduction alkaline. Oxygenic groundwater in the fluid is the activate and mig- ratory medium of uranium element, but the gaseous hydrocarbon like CH4 as well as H2, H2S, CO from natural gas is the important sedimentary reducer of uranium mineral; the transformation of pH,Eh in fluid environment is the main reason for the formation of uranium metallization. | WU BoLin LIU ChiYang WANG JianQiang | 2007 | Science China Earth Sciences2007，50，z2： | 9 |
| 8 | Detrital-zircon geochronology of the Jurassic coal-bearing strata in the western Ordos Basin, North China: Evidences for multi-cycle sedimentation显示文摘The western Ordos Basin(WOB), situated in a tectonic transition zone in the North China Craton, acts as an excellent example for studying the Mesozoic intraplate sedimentation and deformation in Asia. In this study, U-Pb ages for 1203 detrital zircons of 14 sandstone samples collected from 11 sections are presented to unravel the sediment source locations and paleogeographic environments of the Early-Middle Jurassic coal-bearing Yan'an Formation in the WOB. Data show that there are five prominent age groups in the detrital zircons of the Yan'an Formation, peaking at ca. 282 Ma, 426 Ma, 924 Ma, 1847 Ma, and2468 Ma. Samples from the northern, middle, and southern parts of the WOB contain these five age categories in various proportions. In the northern region, the Yan'an Formation exclusively contains Early Permian detrital zircons with a single age group peaking at 282 Ma, matching well with the crystallizing ages of the widespread Early Permian granites in the Yinshan Belt to the north and the Alxa Block to the northwest. While in the southern region, the Yan'an Formation mainly contains three groups of detrital zircons, with age peaks at 213 Ma, 426 Ma, and 924 Ma. These zircon ages resemble those of the igneous rocks in the Qilian-Qinling Orogenic Belt to the south-southwest. Samples in the middle region, characterized by a mixture age spectrum with peaks at 282 Ma, 426 Ma, 924 Ma, 1847 Ma and 2468 Ma, are previously thought to have mixed derivations from surrounding ranges. However, by referring to the detrital-zircon age compositions of the pre-Jurassic sedimentary successions and combining with paleontological and petrographic analysis, we firstly propose that the sediments of the Yan'an Formation in the middle region were partly recycled from the Triassic and Paleozoic sedimentary strata in the WOB.The occurrence of recycled sedimentation suggests that the Late Triassic-Early Jurassic intraplate compressional deformation was very intense in the WOB, especially for regions in front of the Qilian Orogenic Belt. | Pei Guo Chiyang Liu Jianqiang Wang Yu Deng Guangzhou Mao Wenqing Wang | 2018 | Geoscience Frontiers2018，9，6： | 8 |
| 9 | Uplift and evolution of Helan Mountain显示文摘The Helan Mountain lies in the northwest margin of Ordos Basin and its uplift periods have close relations with the tectonic feature and evolution of the basin. There are many views on the uplift time of Helan Mountain, which is Late Triassic and Late Jurassic. It is concluded by the present strata, magmatic rock and hot fluid distribution that the Helan Mountain does not uplift in Late Triassic to Middle Jurassic but after Middle Jurassic. Through the research of the sedimentary strata and deposit rate in Yinchuan Graben which is near to the Helan Mountain, it is proved that the Helan Mountain uplifts in Eocene with a huge scale and in Pliocene with a rapid speed. The fission track analysis of apatite and zircon can be used to determine the precise uplift time of Helan Mountain, which shows that four stages of uplifting or cooling: Late Jurassic to the early stage of Early Cretaceous, mid-late stage of Early Cretaceous, Late Cretaceous and since Eocene. During the later two stages the uplift is most apparent and the mid-late stage of Early Cretaceous is a regional cooling course. Together with several analysis ways, it is considered that the earliest time of Helan Mountain uplift is Late Jurassic with a limited scale and that Late Cretaceous uplift is corresponding to the whole uplift of Ordos Basin, extensive uplift happened in Eocene and rapid uplift in Pliocene. | ZHAO HongGe LIU ChiYang WANG Feng WANG JianQiang LI Qiong YAO YaMing | 2007 | Science China Earth Sciences2007，50，z2： | 7 |
| 10 | Late Carboniferous-Early Permian Sequence Stratigraphy and Depositional Evolution in the Northeast Ordos Basin,North China显示文摘顺序地层学的分析被用于东北 Ordos 盆的上面的含碳降低二叠的沉积继任,北方中国基于从十条全部记载的曲线和八个露头获得的数据。lithostratigraphical 单位的外形框架,太原形成在二个外形协会包括七外形,从 fluvio 三角洲变化到架障碍岛。外形在一个 chronostratigraphical 框架以内被介绍,由系统道连接了,它接着由充满表面和顺序边界是有限的。六个第三顺序的 depositional 序列被认出,由六种类型跳了 2 不顺从。一个浅得向上的来自於大陆的海沉积模型被创造,它由沙岩,煤缝接和碳酸盐继任组成。 | YANG Minghui LIU Chiyang LAN Chaoli LIU Le LI Xin ZHANG Kunshan | 2010 | Acta Geologica Sinica(English Edition)2010，84，5： | 7 |
| 11 | Sequence framework of two different kinds of margins and their response to tectonic activity during the Middle-Late Triassic, Ordos Basin显示文摘Two kinds of margin respectively occur in the Ordos Basin during the Middle-Late Triassic (Yanchang Age), one is foreland margin developed under the background of flexural subsidence by thrusting intensively in the southwest margin, and the other is intracratonic basin margin by stable subsidence in northern and central parts of the basin. The Middle-Late Triassic Yanchang Formation can be divided into four regional third-order sequences, which are separated by gentle angular unconformity or regional erosion surface, made up of lowstand system tract (LST), expanding system tract (EST) and highstand system tract (HST) from lower to upper within a sequence. But there are distinct differences of the sequence framework between the southwest margin and northern and central parts of the basin. The southwest margin develops heavy conglomerate layer and unconformity as a result of orogeny by thrusting, and the intracratonic basin margin by stable subsidence in the northern and central parts grows aggradational sandstone, conglomerate in fluvio-delta system and parallel unconformity. The depositional framework of southwest margin reflects the tectonic evolution from flexural subsidence by thrusting to rebounded uplift. The formation of sequence boundary is related to the resilient uplift and erosion. The sequence stratigraphic framework and depositional system tract configuration in the foreland basin are controlled by structural activity of the fold and thrust belt, and the sequence succession reflects episodic thrusting of the Middle-Late Triassic toward the foreland basin. The sequence evolution in northern and central parts reflects the depositional succession of fluvio-delta system under intracratonic background, composed of coarse-grained sediment in braided channel deposit at the lower, meandering channel deposit in the middle and fine-grained sediment in the flood plain at the upper, dominated by lake level fluctuation. During the deposit of the LST in the intracraton basin, accommodation space is limited, and results in abundant fluvial sediment migration laterally, erosion and transport, forming laterally sandstone composite and aggradational deposit on the alluvial plain, which constitutes specific erosion unconformity boundary. | YANG MingHui LIU ChiYang ZHENG MengLin LAN ChaoLi TANG Xuan | 2007 | Science China Earth Sciences2007，50，z2： | 7 |
| 12 | The radioactive abnormality characteristics of typical regions in Ordos Basin and its geological implications显示文摘There are many results of single mineral enrichment characteristic, such as oil, gas, coal and uranium, but little is known about the synergistic research of these important minerals and the study of uranium enrichment features in the deep basin. So, the study on the paragenesis regularity and coexisting relation of many minerals in the basin will promote the integrated forecast and cooperative exploitation of the basin. Based on the plentiful logging data and geological data, this paper studies the distributing feature of higher Gamma abnormality. The analysis on 33 core samples' test results indicates that the increasing of Gamma abnormality is due to the increasing of the uranium element, and the enrichment of uranium is a result of the activation and conglomeration of uranium. On the basis of the recognization of radioactive abnormality and the study about the reality of oil,gas,coal or uranium coexisting in a basin and its mechanism, the paper shows that there is a certain mutual promotion in oil, gas, coal and uranium in the basin, which provides an important theory basis for cooperative exploitation of energy resources. | TAN ChengQian LIU ChiYang ZHAO JunLong ZHANG RongRong | 2007 | Science China Earth Sciences2007，50，z2： | 6 |
| 13 | Latest Triassic to Early Jurassic Thrusting and Exhumation in the Southern Ordos Basin, North China: Evidence from LA-ICP-MS-based Apatite Fission Track Thermochronology显示文摘The contractional structures in the southern Ordos Basin recorded critical evidence for the interaction between Ordos Basin and Qinling Orogenic Collage. In this study, we performed apatite fission track(AFT) thermochronology to unravel the timing of thrusting and exhumation for the Laolongshan-Shengrenqiao Fault(LSF) in the southern Ordos Basin. The AFT ages from opposite sides of the LSF reveal a significant latest Triassic to Early Jurassic time-temperature discontinuity across this structure. Thermal modeling reveals at the latest Triassic to Early Jurassic, a ~50°C difference in temperature between opposite sides of the LSF currently exposed at the surface. This discontinuity is best interpreted by an episode of thrusting and exhumation of the LSF with ~1.7 km of net vertical displacement during the latest Triassic to Early Jurassic. These results, when combined with earlier thermochronological studies, stratigraphic contact relationship and tectono-sedimentary evolution, suggest that the southern Ordos Basin experienced coeval intense tectonic contraction and developed a north-vergent fold-and-thrust belt. Moreover, the southern Ordos Basin experienced a multi-stage differential exhumation during Mesozoic, including the latest Triassic to Early Jurassic and Late Jurassic to earliest Cretaceous thrust-driven exhumation as well as the Late Cretaceous overall exhumation. Specifically, the two thrust-driven exhumation events were related to tectonic stress propagation derived from the latest Triassic to Early Jurassic continued compression from Qinling Orogenic Collage and the Late Jurassic to earliest Cretaceous intracontinental orogeny of Qinling Orogenic Collage, respectively. By contrast, the Late Cretaceous overall exhumation event was related to the collision of an exotic terrain with the eastern margin of continental China at ~100 Ma. | ZHANG Shaohua LIU Chiyang YANG Minghui BAI Jianke WANG Jianqiang | 2018 | Acta Geologica Sinica(English Edition)2018，92，4： | 5 |
| 14 | Effects of uranium on hydrocarbon generation of hydrocarbon source rocks with type-Ⅲ kerogen显示文摘Organic-inorganic interaction exists universally and is important in the process of mineral resources formation.It is the essential reason why organic oil,gas,coal and inorganic uranium coexist,accumulate,and mineralize in the same sedimentary basins.Hydrocarbon-generating simulation experiment was conducted using low-mature hydrocarbon source rock containing kerogen type III with uranium(UO2CO3 solution)added to study the effects of uranium on the hydrocarbon generation of hydrocarbon source rocks.Experiment results show that uranium can enhance the yield of gas hydrocarbon,promote the total gas output,and increase the total hydrocarbon production(mass or volume).Uranium may lower the hydrocarbon generation threshold temperature and lead to the generation of liquid hydrocarbon in the relative low temperature of hydrocarbon source rock.Uranium can enhance the yield of saturated hydrocarbon,promote the low molecular weight hydrocarbons generating,and in turn increase the content of CH4 and the content of dry gas of the generated hydrocarbons.Uranium is one of the potential inorganic accelerating factors of the immature hydrocarbons. | MAO GuangZhou LIU ChiYang ZHANG DongDong QIU XinWei WANG JianQiang LIU BaoQuan LIU JingJiang QU ShaoDong DENG Yu WANG FeiFei ZHANG Can | 2014 | Science China Earth Sciences2014，57，6： | 5 |
| 15 | In-situ Chemical Age of the Sandstone-hosted Uranium Deposit in Ningdong Area on the Western Margin of the Ordos Basin, North China显示文摘Objective The Ordos Basin located in the western part of the North China Craton bears various energy resources such as oil,gas,coal and uranium.It is one of the richest uranium-bearing basins in China.Since the discovery of the large-scale Dongsheng,Hangjinqi and Daying uranium deposits in the north of the Ordos Basin,a | WANG Feifei LIU Chiyang NIU Haiqing ZHOU Ningchao LI Xiuhua LUO Wei ZHANG Dongdong ZHAO Yan | 2018 | Acta Geologica Sinica(English Edition)2018，92，1： | 4 |
| 16 | Petrology, Geochemistry and Zircon U-Pb Geochronology of the Xiangshan Group in the Eastern Hexi Corridor Belt: Implications for Provenance and Tectonic Evolution显示文摘The eastern Hexi Corridor Belt(HCB) is located in the transitional belt among the Alxa Block,the Qilian Orogenic Belt and the North China Block. Because of its unique tectonic location, the tectonic setting, provenance, and even the age of the sedimentary strata in the eastern HCB during the Early Paleozoic remain controversial. This study analyzes the provenance of the poorly studied Xiangshan Group, discusses its age of development and tectonic setting in the eastern HCB using a combination of petrological, geochemical and LA-ICP-MS U-Pb zircon dating methods. Based on the youngest age peaks and the fossil evidence, we suggest that the Xiangshan Group is Middle Cambrian to Late Ordovician in age. The complexity of the geochemical characteristics and associated diagrams suggests that the early stage of the Xiangshan Group developed in a passive continental margin environment, late in the backarc basin of the eastern HCB. Based on the sandstone detrital composition, whole-rock geochemistry and detrital zircon ages, we conclude that the Xiangshan Group had an early provenance that was mainly from the Qilian Block and a late provenance from the Qilian Block and the western Alxa Block. The eastern HCB and its northern and southern blocks have similar palaeontology, lithology and basement age characteristics to the South China Block. This indicates that the eastern HCB might not have formed in the intra-continental aulacogen of the North China Block during the Early Paleozoic but has a close affinity to eastern Gondwana. | ZHAO Xiaochen LIU Chiyang WANG Jianqiang DUAN Liang ZHAO Yan ZHANG Qihang LUO Wei | 2017 | Acta Geologica Sinica(English Edition)2017，91，5： | 4 |
| 17 | Provenance Analyses of Lower Cretaceous Strata in the Liupanshan Basin: From Paleocurrents Indicators, Conglomerate Clast Compositions, and Zircon U-Pb Geochronology显示文摘The Liupanshan Basin constitutes a major portion of the northern North-South tectonic belt. The Lower Cretaceous strata in the Liupanshan Basin recorded the tectono-sedimentary evolution processes of this area and are pivotal for understanding the original sedimentary appearance of the Liupanshan Basin. In this work, we present a study of provenance and tectono-sedimentary evolution of the Liupanshan Basin during the Early Cretaceous. Integrated-paleocurrent directions, gravel clast compositions, and detrital zircon U-Pb isotopic analysis of the Lower Cretaceous Sanqiao and Heshangpu formations were applied to determine the provenance. The gravel clast compositions of Sanqiao Formation conglomerates(mainly including magmatic rocks, metamorphic rocks and limestones) display various features in different places, revealing different rock components of source areas. The paleocurrent directions of the Sanqiao and Heshangpu formations suggest that the sediments were transported from the basin margin to the center. Detrital zircons of two samples from the Huoshizhai Section(northwestern Liupanshan Basin) yield a dominant unimodal distribution from 420 to 500 Ma, suggesting a single-sourced provenance. Based on the above analyses, comparing to the magmatic records in the Qilian-Qinling orogenic belt, the detritus of the Sanqiao and Heshangpu formations were mainly from the proximal metamorphic and magmatic rocks of the Qilian-Qinling orogenic belt and the limestones of the archaic uplift. Combined with sedimentary characteristics, we concluded that the Liupanshan Basin experienced multi-stage evolution history:(1) the early rifting extension stage(Sanqiao Period),(2) the middle spanning and depression stage(Heshangpu–Early Naijiahe Period), and(3) the late extinction stage(Late Naijiahe Period). The evolution of Liupanshan Basin is closely related to that of Ordos Basin and it is further associated with tectonic transition of the northern North-South tectonic belt. | Xiaochen Zhao Chiyang Liu Jianqiang Wang Wei Luo Fangpeng Du Li Ma | 2020 | Journal of Earth Science2020，31，4： | 3 |
| 18 | Global Uranium Resources in Sedimentary Basins and the Characteristics of Oil, Gas, Coal and Uranium Coexisting in one Basin显示文摘1 Sedimentary-type and Sandstone-type Uranium Resources Over the past three decades,with the success in in-situ leach(ISL)mining of sandstone-type uranium deposits(SUD),the quantity,resources and production | WANG Feifei LIU Chiyang NIU Haiqing DENG Yu MA Huanhuan WANG Wenqing | 2017 | Acta Geologica Sinica(English Edition)2017，91，S1： | 3 |
| 19 | Discovery of Kilometer-Scale Uplift and Exhumation Related to the Late Indosinian Movement in the Northern Ordos Basin, North China显示文摘The tectonic response of the Ordos Basin to Indosinian movement mainly occurred in the southwestern part of the basin due to the Late Triassic collisional Qinling orogeny to the south.The orogeny resulted in intense uplift and exhumation of the southwestern section of the Ordos Basin,where the upper and middle parts of the Upper Triassic Yanchang Formation were exhumated and the magnitude of exhumation progressively decreased to the northeast(Liu Chiyang et al.,2008).However,little attention has been paid to the influence of Indosinian movement to the northern Ordos Basin.In this study,stratigraphic observations and new apatite fission track(AFT)data are integrated to characterize the effect of Indosinian movement in the northern Ordos Basin. | ZHANG Long LIU Chiyang HE Xiaoyuan | 2019 | Acta Geologica Sinica(English Edition)2019，93，1： | 2 |
| 20 | Genetic causes of oil-rich and oil-poor reservoirs: Implications from two Cenozoic basins in the eastern North China Craton显示文摘The Bohai Bay and Hehuai(southern North China) rift basins in the eastern part of the North China Craton are southnorth-adjacent. They have shown synchronous evolutionary processes, and possess generally identical superficial and shallow structural characteristics as well as similar basin areas. However, there is a large difference in the richness of oil resources between the two basins. The Bohai Bay Basin has extremely abundant oil reserves, while commercial oil reserves have not been found in the Hehuai Basin. The deep tectonic structures, magmatic activities, and modern and paleo-geothermal fields of the two basins are significantly different. Compared with the Hehuai Basin, the Bohai Bay Basin has a thinner crust and more complex structure with multiple low-velocity layers. It is also characterized by intense magmatic activity, high modern and paleogeothermal fields, frequent seismic activity, and active deep interactions, small effective elastic thickness of the isotropic lithosphere, and shorter balanced transformation wavelength of the lithosphere with a high likelihood of local compensation. The Hehuai Basin has a simple deep structure and homogeneous crustal composition, with a high likelihood of regional compensation. The characteristics of the deep structures mentioned above are generally similar to those of the southern part of the stable Ordos Basin, except for the smaller crust thickness. This indicates the presence of differences in Mesozoic destruction between the southern and northern zones in the eastern part of the North China Craton. The northern zone was subjected to significant destruction, while the southern zone was subjected to modifications, primarily in the form of local changes in the structures and/or properties of the crust or lithospheric mantle, with the overall structure and stability of the craton kept intact. The formation of high-quality source rock is primarily influenced by the abnormal flourishment of organisms in water bodies during the syndepositional period, and is also strongly associated with the high geothermal setting of basins and nutrients from hydrothermal solutions and volcanoes. In other words, it is mainly controlled by deep processes and deep-major fault activity. The differences in the deep structures and modern and paleo geothermal fields of the two basins correspond to the difference in richness of oil resources, suggesting that there is an important internal or causal relationship between the two aspects. This viewpoint coincides with the conditions and environments required for the development of high-quality source rock in hydrocarbon-rich basins(sags)in China and other countries, and is evidenced by the modern lake basin of the East African Rift. A new hydrocarbon generation model is proposed in this work: petroleum is a comprehensive product of the integration of bioenergy, thermal energy, and other related energies(such as chemical and kinetic energy) and their interactions; the degree of richness of petroleum is generally controlled by the regional tectonic structure, thermal environment, and deep processes; nonmarine basins or depressions with abundant resources are closely related to active deep processes, intense exchange of material between the deep and shallow layers, participation of external hydrocarbons, and energy integration and conversion. | Chiyang LIU Lei HUANG Dongdong ZHANG Junfeng ZHAO Yu DENG Pei GUO Yijian HUANG &Jianqiang WANG | 2018 | Science China Earth Sciences2018，61，12： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员