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1Constraining the timing of the India-Asia continental collision by the sedimentary record显示文摘Placing precise constraints on the timing of the India-Asia continental collision is essential to understand the successive geological and geomorphological evolution of the orogenic belt as well as the uplift mechanism of the Tibetan Plateau and their effects on climate,environment and life.Based on the extensive study of the sedimentary record on both sides of the Yarlung-Zangbo suture zone in Tibet,we review here the present state of knowledge on the timing of collision onset,discuss its possible diachroneity along strike,and reconstruct the early structural and topographic evolution of the Himalayan collided range.We define continent-continent collision as the moment when the oceanic crust is completely consumed at one point where the two continental margins come into contact.We use two methods to constrain the timing of collision onset:(1) dating the provenance change from Indian to Asian recorded by deep-water turbidites near the suture zone,and(2) dating the age of unconformities on both sides of the suture zone.The first method allowed us to constrain precisely collision onset as middle Palaeocene(59±l Ma).Marine sedimentation persisted in the collisional zone for another 20-25 Ma locally in southern Tibet,and molassic-type deposition in the Indian foreland basin did not begin until another 10-15 Ma later.Available sedimentary evidence failed to firmly document any significant diachroneity of collision onset from the central Himalaya to the western Himalaya and Pakistan so far.Based on the Cenozoic stratigraphic record of the Tibetan Himalaya,four distinct stages can be identified in the early evolution of the Himalayan orogen:(1) middle Palaeocene-early Eocene earliest Eohimalayan stage(from 59 to 52 Ma):collision onset and filling of the deep-water trough along the suture zone while carbonate platform sedimentation persisted on the inner Indian margin;(2) early-middle Eocene early Eohimalayan stage(from 52 to 41 or 35 Ma):filling of intervening seaways and cessation of marine sedimentation;(3) late Eocene-Oligocene late Eohimalayan stage(from 41 to 25 Ma):huge gap in the sedimentary record both in the collision zone and in the Indian foreland;and(4) late Oligocene-early Miocene early Neohimalayan stage(from 26 to 17 Ma):rapid Himalayan growth and onset of molasse-type sedimentation in the Indian foreland basin.HU XiuMian WANG JianGang AN Wei Eduardo GARZANTI LI Juan 2017Science China Earth Sciences2017,60,4:32
2The Deep-Time Digital Earth program:data-driven discovery in geosciences显示文摘Current barriers hindering data-driven discoveries in deep-time Earth(DE)include:substantial volumes of DE data are not digitized;many DE databases do not adhere to FAIR(findable,accessible,interoperable and reusable)principles;we lack a systematic knowledge graph for DE;existing DE databases are geographically heterogeneous;a significant fraction of DE data is not in open-access formats;tailored tools are needed.These challenges motivate the Deep-Time Digital Earth(DDE)program initiated by the International Union of Geological Sciences and developed in cooperation with national geological surveys,professional associations,academic institutions and scientists around the world.DDE’s mission is to build on previous research to develop a systematic DE knowledge graph,a FAIR data infrastructure that links existing databases and makes dark data visible,and tailored tools for DE data,which are universally accessible.DDE aims to harmonize DE data,share global geoscience knowledge and facilitate data-driven discovery in the understanding of Earth’s evolution.Chengshan Wang Robert MHazen Qiuming Cheng Michael HStephenson Chenghu Zhou Peter Fox Shu-zhong Shen Roland Oberhansli Zengqian Hou Xiaogang Ma Zhiqiang Feng Junxuan Fan Chao Ma Xiumian Hu Bin Luo Juanle Wang Craig M.Schiffries 2021National Science Review2021,8,9:14
3Characteristics of Early Eocene radiolarian assemblages of the Saga area,southern Tibet and their constraint on the closure history of the Tethys显示文摘Quantitative analysis of Early Eocene radiolarian assemblages discovered in the sedimentary mélange (accretionary prism) of the Saga area,southern Tibet provides new information to constrain the timing of Tethys closure and the initial collision of India and Eurasia. The radiolarian species of Saga include Amphisphaera coronata (Ehrenberg),Buryella hannae Bak & Barwicz-Piskorz,Buryella clinata Foreman,Buryella tetradica Foreman,Calocycloma ampulla (Ehrenberg),Lamptonium fabaeforme constrictum Riedel and Sanfilippo,Lamptonium pennatum Foreman,Lithomespilus coronatus Squinabol and Lamptonium (?) colymbus Foreman. The adequate and reliable correlation of these radiolarians specimens indicates that the assemblage is of Early Eocene in age. The age and depositional envi-ronment of these radiolarians testify that deep ocean basins existed between India Plate and Asia Plate during the Early Eocene. The complete closure of Tethys must have taken place at least after the Early Eocene.LI YaLin WANG ChengShan HU XiuMian M. Bak WANG JinJun CHEN Lei 2007Chinese Science Bulletin2007,52,15:9
4Burial Records of Reactive Iron in Cretaceous Black Shales and Oceanic Red Beds from Southern Tibet显示文摘白垩纪研究的领域里的新方向之一是阐明到海洋的红床的从白垩纪黑页岩的沉积转变的机制。Achemical 顺序的抽取方法从南部的 Tibetto 被用于岩石的这二种类型调查反应的铁的埋葬记录。结果显示联系碳酸盐的铁和黄铁矿相对在黑页岩被充实,但是弄空或在红床上不在。在红床上的反应的铁的主要特征是氧化铁的相对丰富(大部分赤铁矿) ,它发生在 syn-depostion 或早成岩作用期间。在氧化铁和全部的铁之间的比率为红床免职显示充实氧的环境。当在氧化铁和全部的铁之间的比率在 thered 床上增加时,在反应的铁埋葬记录和 paleo 生产率的代理之间的比较建议 thatpaleo 生产率减少。这现象能暗示在海洋的氧化还原作用和生产率之间的关系可能是为从白垩纪黑页岩的沉积转变的原因之一到海洋的红床免职。HUANG Yongjian WANG Chengshan HU Xiumian CHEN Xi 2007Acta Geologica Sinica(English Edition)2007,81,3:8
5Rapid drift of the Tethyan Himalaya terrane before two-stage India-Asia collision显示文摘The India-Asia collision is an outstanding smoking gun in the study of continental collision dynamics.How and when the continental collision occurred remains a long-standing controversy.Here we present two new paleomagnetic data sets from rocks deposited on the distal part of the Indian passive margin,which indicate that the Tethyan Himalaya terrane was situated at a paleolatitude of∼19.4°S at∼75 Ma and moved rapidly northward to reach a paleolatitude of∼13.7°N at∼61 Ma.This implies that the Tethyan Himalaya terrane rifted from India after∼75 Ma,generating the North India Sea.We document a new two-stage continental collision,first at∼61 Ma between the Lhasa and Tethyan Himalaya terranes,and subsequently at∼53−48 Ma between the Tethyan Himalaya terrane and India,diachronously closing the North India Sea from west to east.Our scenario matches the history of India-Asia convergence rates and reconciles multiple lines of geologic evidence for the collision.Jie Yuan Zhenyu Yang Chenglong Deng Wout Krijgsman Xiumian Hu Shihu Li Zhongshan Shen Huafeng Qin Wei An Huaiyu He Lin Ding Zhengtang Guo Rixiang Zhu 2021National Science Review2021,8,7:7
6Late Cretaceous Foraminiferal Faunas from the Saiqu“mélange”in Southern Tibet显示文摘As one of the mélanges in the southern side of the Yarlung-Zangbo suture zone,the Saiqu mélange in southern Tibet is important for understanding the evolution of the Neo-Tethys ocean.The age of the Saiqu mélange,however,has been debated due to the lack of reliable fossil evidence in matrix strata.Based on lithological similarities with platform strata in southern Tibet and limited fossils from exotic blocks,previous studies variously ascribed the Saiqu mélange to be Triassic in general,Late Triassic,or Late Cretaceous.Here we reported planktonic foraminiferal faunas from the matrix strata of the Saiqu mélange.The new fossils yield a Late Cretaceous age,which is so far the best age constraint for the mélange.Regional stratigraphic correlation indicates that the Cretaceous Oceanic Red Beds (CORBs)in Saiqu may be time equivalent to the CORBs of the Zongzhuo Formation in neighboring regions.Thus the Saiqu mélange should be correlated to the Upper Cretaceous Zongzhuo Formation rather than the Triassic Xiukang Group,as previously suggested.LI Guobiao WAN Xiaoqiao JIANG Ganqing HU Xiumian GOUDEMAND Nicolas HAN Hongdou CHEN Xi 2007Acta Geologica Sinica(English Edition)2007,81,6:5
7Cretaceous Oceanic Red Beds:Distribution,Lithostratigraphy and Paleoenvironments显示文摘白垩纪海洋的红床(CORB ) 由红页岩和泥土代表了,在白垩纪期间并且早被扔古新,主要在 Tethyan 领域,在更低的斜坡并且深渊盆环境。CORB 的详细研究是稀罕的;因此,我们从钻在南部的欧洲,西北的德国,亚洲和新西兰暴露的白垩纪岩石潜水艇在空中的核心和露头的深海海洋编了 CORB 数据。在 Tethyan 领域, CORB 主要由微红或粉红色的页岩,石灰石和泥土石头组成。由对比,泥土石头和粉笔在深海洋的钻的核心是稀罕的。在从大西洋的核心的上面的白垩纪海洋的沉积是在颜色的褐,微红的褐,微黄色的褐和苍白的褐的主要各种各样的阴影。一些红,粉红色,黄和橘子白垩纪沉积也是现在。CORB 的最普通的年龄在海洋的缺氧的事件(OAE ) 以后经常 oxic 免职主要是到 Maastrichtian 的早 Campanian,与发作,在早 Aptian 期间,迟了 Albian 早 Turonian 和 Campanian。这建议一显示并且以前没认出在 OAE,黑页岩免职和 CORB 之间的关系。CORB 尽管全球性散布了,在诺思大西洋和 Tethyan 领域是很普通的,在里面对北半球的中间的纬度低;在南方大西洋和印度洋在对南部的半球的高纬度中间;并且在中央太平洋是不太经常的。他们的普遍出现可能在迟了的白垩纪期间是为深海洋的当前的循环在之间建立一个连接的结果和平并且在在海洋的盆的南方和诺思大西洋和变化之间的演变连接通风。CHEN Xi WANG Chengshan HU Xiumian HUANG Yongjian WANG Pingkang Luba JANSA ZENG Xuan 2007Acta Geologica Sinica(English Edition)2007,81,6:4
8Two types of hyperthermal events in the Mesozoic-Cenozoic:Environmental impacts, biotic effects, and driving mechanisms显示文摘A deeper understanding of hyperthermal events in the Earth’s history can provide an important scientific basis for understanding and coping with global warming in the Anthropocene. Two types of hyperthermal events are classified based on the characteristics of the carbon isotope excursion(CIE) of the five representative hyperthermal events in the Mesozoic and Cenozoic. The first type is overall characterized by negative CIEs(NCHE) and represented by the Permian-Triassic boundary event(PTB, ~252 Ma), the early Toarcian oceanic anoxic event(TOAE, ~183 Ma), and the Paleocene-Eocene Thermal Maximum event(PETM, ~56 Ma). The second type is overall characterized by positive CIEs(PCHE) and represented by the early Aptian oceanic anoxic event(OAE1 a, ~120 Ma) and the latest Cenomanian oceanic anoxic event(OAE2, ~94 Ma).Hyperthermal events of negative CIEs(NCHE), lead to dramatic changes in temperature, sedimentation, and biodiversity. These events caused frequent occurrence of terrestrial wildfires, extreme droughts, acid rain, destruction of ozone layer, metal poisoning(such as mercury), changes in terrestrial water system, and carbonate platform demise, ocean acidification, ocean anoxia in marine settings, and various degree extinction of terrestrial and marine life, especially in shallow marine. In contrast,hyperthermal events of positive CIEs(PCHE), result in rapid warming of seawater and widespread oceanic anoxia, large-scale burial of organic matter and associated black shale deposition, which exerted more significant impacts on deep-water marine life,but little impacts on shallow sea and terrestrial life. While PCHEs were triggered by volcanism associated with LIPs in deep-sea environment, the released heat and nutrient were buffered by seawater due to their eruption in the deep sea, thus exerted more significant impacts on deep-marine biota than on shallow marine and terrestrial biota. This work enriches the study of hyperthermal events in geological history, not only for the understanding of hyperthermal events themselves, large igneous provinces, marine and terrestrial environment changes, mass extinctions, but also for providing a new method to identify the types of hyperthermal events and the inference of their driving mechanism based on the characteristics of carbon isotopic excursions and geological records.Xiumian HU Juan LI Zhong HAN Yongxiang LI 2020Science China Earth Sciences2020,63,8:4
9Geoscience knowledge graph in the big data era显示文摘Since the beginning of the 21 st century,the geoscience research has been entering a significant transitional period with the establishment of a new knowledge system as the core and with the drive of big data as the means.It is a revolutionary leap in the research of geoscience knowledge discovery from the traditional encyclopedic discipline knowledge system to the computer-understandable and operable knowledge graph.Based on adopting the graph pattern of general knowledge representation,the geoscience knowledge graph expands the unique spatiotemporal features to the Geoscience knowledge,and integrates geoscience knowledge elements,such as map,text,and number,to establish an all-domain geoscience knowledge representation model.A federated,crowd intelligence-based collaborative method of constructing the geoscience knowledge graph is developed here,which realizes the construction of high-quality professional knowledge graph in collaboration with global geo-scientists.We also develop a method for constructing a dynamic knowledge graph of multi-modal geoscience data based on in-depth text analysis,which extracts geoscience knowledge from massive geoscience literature to construct the latest and most complete dynamic geoscience knowledge graph.A comprehensive and systematic geoscience knowledge graph can not only deepen the existing geoscience big data analysis,but also advance the construction of the high-precision geological time scale driven by big data,the compilation of intelligent maps driven by rules and data,and the geoscience knowledge evolution and reasoning analysis,among others.It will further expand the new directions of geoscience research driven by both data and knowledge,break new ground where geoscience,information science,and data science converge,realize the original innovation of the geoscience research and achieve major theoretical breakthroughs in the spatiotemporal big data research.Chenghu ZHOU Hua WANG Chengshan WANG Zengqian HOU Zhiming ZHENG Shuzhong SHEN Qiuming CHENG Zhiqiang FENG Xinbing WANG Hairong LV Junxuan FAN Xiumian HU Mingcai HOU Yunqiang ZHU 2021Science China Earth Sciences2021,64,7:4
10Upper Cretaceous trench deposits of the Neo-Tethyan subduction zone: Jiachala Formation from Yarlung Zangbo suture zone in Tibet, China显示文摘The history of convergence between the India and the Asia plates, and of their subsequent collision which triggered the Himalayan orogeny is recorded in the Yarlung Zangbo suture zone. Exposed along the southern side of the suture, turbidites of the the Jiachala Formation fed largely from the Gangdese arc have long been considered as post-collisional foreland-basin deposits based on the reported occurrence of Paleocene-early Eocene dinoflagellate cysts and pollen assemblages. Because magmatic activity in the Gangdese arc continued through the Late Cretaceous and Paleogene, this scenario is incompatible with U-Pb ages of detrital zircons invariably older than the latest Cretaceous. To solve this conundrum, we carried out detailed stratigraphic, sedimentological, paleontological, and provenance analyses in the Gyangze and Sajia areas of southern Tibet,China. The Jiachala Formation consists of submarine fan deposits that lie in fault contact with the Zongzhuo Formation.Sandstone petrography together with U-Pb ages and Hf isotope ratios of detrital zircons indicate provenance from the Gangdese arc and central Lhasa terrane. Well preserved pollen or dinoflagellate cysts microfossils were not found in spite of careful research, and the youngest age obtained from zircon grain was ~84 Ma. Based on sedimentary facies, provenance analysis and tectonic position, we suggest that the Jiachala Formation was deposited during the Late Cretaceous(~88–84 Ma) in the trench formed along the southern edge of Asia during subduction of Neo-Tethyan oceanic lithosphere.Hanpu FU Xiumian HU Erica M. CROUCH Wei AN Jiangang WANG Eduardo GARZANTI 2018Science China Earth Sciences2018,61,9:3
11Late Paleozoic magmatism in South China:Oceanic subduction or intracontinental orogeny?显示文摘A gneissic granite with an U-Pb age of 313±4 Ma was found in northeastern Fujian Province,South China.It is an S-type granite characterized by high K2O,Al2O3 and low SiO2,Na2O contents with high A/CNK ratio of 1.22 for the whole rock.Zircons with stubby morphology from the gneissic granite yield 206 Pb/238 U ages ranging from 326 to 301 Ma with a weighted average age of 313±4 Ma,and negative εHf(t) values from -8.35 to -1.74 with Hf model ages (TCDM) of 1.43 to 1.84 Ga.This S-type granite probably originated from late Paleoproterozoic crust in intracontinental orogeny.Integrated with previous results on paleogeographic reconstruction of South China,the nature of Paleozoic basins,Early Permian volcanism and U-Pb-Hf isotope of detrital zircons from the late Paleozoic to early Mesozoic sedimentary rocks,we suggest the occurrence of a late Paleozoic orogeny in the eastern Cathaysia Block,South China.This orogenic cycle includes Late Carboniferous (340-310 Ma) orogeny (compression) episode and Early Permian (287-270 Ma) post-orogenic or intraplate extension episode.Therefore,the late Paleozoic magmatism in the southeastern South China probably occurred during the intraplate orogeny rather than the arc-related process.YU JinHai LIU Qian HU XiuMian WANG Qin O'REILLY Suzanne Y 2013Science China(Technological Sciences)2013,56,3:2
12Distribution and origin of high magnetic anomalies at Luobusa Ophiolite in Southern Tibet显示文摘The Luobusa Ophiolite,Southern Tibet,lies in the eastern portion of Indus–Yarlung Zangbo suture zone that separates Eurasia from the Indian continent.An aeromagnetic reconnaissance survey has revealed an EWtrending Yarlung Zangbo River aeromagnetic anomaly zone,and it is considered to be caused mainly by the Indus–Yarlung Zangbo Ophiolite.The Luobusa Ophiolite reflects the eastern portion of the Yarlung Zangbo River aeromagnetic anomaly zone.Conventionally,the ultramafic rock in the Luobusa Ophiolite is considered as the origin of the high magnetic anomalies.However,results from the surface magnetic survey and the magnetic susceptibility measurements from drill cores indicate that the high magnetic anomalies are distributed inhomogeneously in the Luobusa Ophiolite.In some cases,the susceptibility exhibits more than 30 times difference between two sides of the same sample.A fact emerged that the susceptibility of dunite with serpentinization is higher than that of fresh dunite,harzburgite and chromite when we analyzed the measurement results.In order to understand the origin of the high magnetic anomalies,we measured the density and susceptibility of 17 samples,microscopic and electron probe analyses have been performed as well.The result indicates the presence of dunite with serpentinization containing an abundant of micro-fissures filled with magnetite.Olivine has a susceptibility of about 2.7–351(910-5SI),pyroxene about 16–320,and chromite about200–800.All these units feature relatively low susceptibility in ultramafic rock,and only the magnetite is characterized by a high susceptibility of about 200,000(910-5SI).Based on these observations,we conclude that the precipitation of magnetite in the process of serpentinization of the olivine caused by the geological process in the Luobusa Ophiolite is the origin of high magnetic anomalies.Lanfang He Xiumian Hu Yabing Zha Ligui Xu Yaohui Wang 2014Chinese Science Bulletin2014,59,23:2
13Sedimentary Facies, Provenance and Geochronology of the Heshangzhen Group: Implications for the Tectonic Evolution of the Eastern Jiangnan Orogen, South China显示文摘The Neoproterozoic Jiangnan orogen plays an important role in the study of the Precambrian tectonic evolution of South China. The tectonic nature of the Neoproterozoic sedimentary basins is still controversial, due to poor understanding of the sedimentary sequences and the lack of geochronological data. Here, we present sedimentological, provenance and geochronological data from the Heshangzhen Group in the eastern Jiangnan orogen. Sedimentological analysis shows that the Luojiamen Formation was deposited in a submarine fan, and the overlying Hongchicun Formation was deposited in front of a fan delta. The youngest detrital zircons constrain the lower Luojiamen and Hongchicun formations with ages of 827.3 ± 8.4 Ma and 825 ± 12 Ma, respectively. The sandstones of the Luojiamen Formation are characterized by a large number of intermediate to felsic volcanic grains, suggesting a volcanic arc source. In contrast, quartz and sedimentary lithic grains increase in the Hongchicun Formation, showing a new input from a collisional orogenic source. Detrital zircon from six sandstone samples in the Luojiamen and Hongchicun formations yield similar age spectra of 930–820 Ma with a peak at ca. 845–860 Ma, with one main cluster at 930–820 Ma. Detrital zircons of 930–845 Ma show a positive value of εHf(t)(+2.4 to +11, mean +7.6), which is similar to the volcanic arc of the nearby Shuangxiwu Group. There are a minor group of zircons with U-Pb ages ranging from 820 Ma to 845 Ma from the middle part of the Luojiamen Formation and Hongchicun Formation, with εHf(t) values between-20 to +2.4, which are consistent with the characteristics of the Shuangqiaoshan Group. within light of the bidirectional paleocurrents in the Luojiamen Formation, it is speculated that the zircons of 820–845 Ma were recycled from the Shuangqiaoshan Group, which is derived from a continental arc to the northwest. Our data suggests that the Luojiamen Formation was formed in an inter-arc basin, while the Hongchicun Formation was formed in an accretionary wedge-top basin. When juxtaposed with the conglomeratic characteristics at the bottom of the Luojiamen Formation, it is believed that the unconformity represented by the ‘Shen Gong Movement' reflects the rapid erosion and accumulation process of island arc volcanic material. The disconformity between the Luojiamen and Hongchicun formations is the imprint of transition from inter-arc basin to accretionary wedge-top basin,which represents the collision between the Shuangxiwu arc and the Yangtze Plate.ZHOU Xiaohua HU Xiumian JIANG Ren GAO Tianshan MA Xue XING Guangfu SUN Gaoyuan SHU Xujie ZHAO Xilin 2020Acta Geologica Sinica(English Edition)2020,94,4:2
14Special Topic: Cretaceous greenhouse palaeoclimate and sea-level changes显示文摘Earth's climate has oscillated between greenhouse(warm)and icehouse(cold)modes throughout Earth history.At present,Earth is in the midst of an icehouse climate interval,despite the anthropogenic contribution to global warming and sea-levelXiuMian HU Michael WAGREICH Benjamin SAMES 2017Science China Earth Sciences2017,60,1:2
15Recognition of trench basins in collisional orogens:Insights from the Yarlung Zangbo suture zone in southern Tibet显示文摘Trench basin,as an important sedimentary repository in oceanic subduction zones,documents faithfully the evolution of paleodrainage and paleogeographic information.Because of the frequent intense deformation during and after deposition,the recognition of trench-basin strata in orogenic belts is quite challenging.Several trench-fill deposits have been identified from the Yarlung Zangbo suture in southern Tibet,which can be classified into two types based on major differences in formation timing and tectonic setting.The first type developed during subduction of the Neotethyan oceanic slab in the Cretaceous(e.g.,the Jiachala,Rongmawa,and Luogangcuo formations),and the second type developed during the initial stage of the India-Asia collision in the Palaeogene(e.g.,the Sangdanlin-Zheya formations).The former was originally deposited on the subducting oceanic crust and then accreted as tectonic slices into the subduction complex;the latter was deposited unconformably on the continental margin of the subducting Indian plate and then involved in the subduction complex during the continental collision.Typical lithologies of trench-basin fills include abyssal chert,siliceous shale,silty to sandy turbidites,debris flows deposits,and slump deposits without carbonate.Detritus feeding these basins were chiefly from the uplifted terrane in the upper plate.This paper summarizes the geological features of trench basins developed in southern Tibet and proposes criteria for recognizing trench-basins in collisional orogens.Xiumian Hu Wei An Eduardo Garzanti Qun Liu 2020Science China Earth Sciences2020,63,12:2
16Upper Cretaceous oceanic red beds (CORBs) in the Tethys: Occurrences,lithofacies, age and environments 显示文摘Xiumian Hu Luba Jansa Chengshan Wang 2005Cretaceous Research2005,26,:1
17Upper Cretaceous oceanic red beds in southern Tibet: A major change from anoxic to oxic, deep-sea environments 显示文摘Chengshan Wang Xiumian Hu Massimo Sarti 2005Cretaceous Research2005,26,:1
18The Cenomanian-Turonian anoxic event in southern Tibet 显示文摘WANG Chengshan HU Xiumian JANSA L 2001Cretaceous Research2001,22,:1
19Upper Cretaceous oceanic red beds in southern Tibet:A major change from anoxic to oxic,deep-sea environments显示文摘WANG CHENGSHAN XIUMIAN HU SARTI M 2005Cretaceous Research2005,26,1:1
20Upper Cretaceous oceanic red beds in southern Tibet:a major change from anoxic to oxic condition显示文摘 Hu Xiumian Jansa Luba 2005Cretaceous Research2005,26,:1
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