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| 1 | New SHRIMP U-Pb age from the Wuqiangxi Formation of Banxi Group:Implications for rifting and stratigraphic erosion associated with the early Cryogenian (Sturtian) glaciation in South China显示文摘In South China, the Wuqiangxi Formation of the Banxi Group and its equivalents underlie the early Cryogenian (Sturtian) glacial deposits but their thickness varies from <200 m to >2000 m. In the Guzhang section of western Hunan, the Wuqiangxi Formation is only 152 m thick, and an ash bed 58 m below the glacial diamictite yielded a SHRIMP U-Pb age of 809.3±8.4 Ma. In contrast, 90 km south of the Guzhang section towards the basin in Zhijiang area where the Wuqiangxi Formation is ~2200 m thick, an age of 725±10 Ma has been reported from the top of this unit, 300 m below the glacial diamictite. These ages provide new evidence for the regional stratigraphic correlation across the Nanhua basin, and suggest unusually large (>2 km) stratigraphic erosion potentially associated with the Sturtian glaciation in South China. The magnitude of erosion may imply significant uplifting and tectonotopography at the onset of the Sturtian glaciation. | ZHANG ShiHong JIANG GanQing DONG Jin HAN YiGui WU HuaiChun | 2008 | Science China Earth Sciences2008，51，11： | 33 |
| 2 | Methane seeps,methane hydrate destabilization,and the late Neoproterozoic postglacial cap carbonates显示文摘甲烷水合物在地球组成容易地可交换的碳的最大的水池“ s 沉积甲壳并且可以使动摇,在一些情况中灾难的联盟者,在全球规模的温暖或海的时间期间,水平变化。在 Neoproterozoicice 年龄期间给极端寒冷,如此的事件的余殃也许在在 Earthhistory 的最可能的间隔之中见证局部性却普遍的甲烷象渗出一样组织的甲烷和质地,导出甲烷的同位素的信号,低硫酸盐集中,海洋的重晶石,并且一突出,短命的碳同位素旅行(delta~( 13 ) C < =-5 每千)在迟了的 Neoproterozoic 期间为一个甲烷水合物 destabilization 事件从 post-Marinoan 帽子碳酸盐(约 635 妈)提供充分证据冰期后的温暖和违反。从水合物的甲烷版本能引起积极反馈到全球温暖,甲烷的氧化能导致海洋血缺氧和大气中的氧气的变化,提供为在最近的 Neoproterozoic 的早动物进化的环境力量。尚待为这个事件被澄清的问题包括有生物革新的甲烷水合物de稳定,起始的甲烷版本的时间,预言的海洋血缺氧事件和它的关系的扳机,响应甲烷版本的 additionalgeochemical 信号,并且帽子的地区性、全球的 synchrony 焦化 降水。在华南的 Doushantuo 帽子碳酸盐为这些问题的更好的理解提供它的年龄的最好的例子之一。 | JIANG Ganqing SHI Xiaoying ZHANG Shihong | 2006 | Chinese Science Bulletin2006，51，10： | 23 |
| 3 | New U-Pb age constraints on the upper Banxi Group and synchrony of the Sturtian glaciation in South China显示文摘The Nanhua basin in South China hosts well-preserved middle-late Neoproterozoic sedimentary and volcanic rocks that are critical for studying the basin evolution, the breakup of the supercontinent Rodinia, the nature and dynamics of the 'snowball' Earth and diversification of metazoans. Establishing a stratigraphic framework is crucial for better understanding the interactions between tectonic, paleoclimatic and biotic events recorded in the Nanhua basin, but existing stratigraphic correlations remain debated, particularly for pre-Ediacaran strata. Here we report new Laser Ablation Inductively Coupled Plasma Mass Spectrometry(LA-ICPMS) U-Pb zircon ages from the middle and topmost Wuqiangxi Formation(the upper stratigraphic unit of the Banxi Group) in Siduping, Hunan Province, South China. Two samples show similar age distribution, with two major peaks at ca. 820 Ma and 780 Ma and one minor peak at ca. 910 Ma, suggesting that the Wuqiangxi sandstone was mainly sourced from Neoproterozoic rocks. Two major age peaks correspond to two phases of magmatic events associated with the rifting of the Nanhua basin, and the minor peak at ca. 910 Ma may correspond to the Shuangxiwu volcanic arc magmatism, which represents pre-collision/amalgamation subduction on the southeastern margin of the Yangtze Block. The youngest zircon group from the topmost Wuqiangxi Formation has a weighted mean age of 714.6±5.2 Ma, which is likely close to the depositional age of the uppermost Banxi Group. This age, along with the ages reported from other sections, constrains that the Banxi Group was deposited between ca. 820 Ma and ca. 715 Ma. The age of 714.6±5.2 Ma from the top of the Wuqiangxi Formation is indistinguishable with the SIMS U-Pb age of 715.9± 2.8 Ma from the upper Gongdong Formation in the Sibao village section of northern Guangxi, South China. It is also, within uncertainties, overlapped with two TIMS U-Pb ages from pre-Sturtian strata in Oman and Canada. These ages indicate that the Jiangkou(Sturtian) glaciation in South China started at ca. 715 Ma instead of ca. 780 Ma and support a globally synchronous initiation of the Sturtian glaciation at ca. 715 Ma. | Gaoyuan Song Xinqiang Wang Xiaoying Shi Ganqing Jiang | 2017 | Geoscience Frontiers2017，8，5： | 17 |
| 4 | Chemocline instability and isotope variations of the Ediacaran Doushantuo basin in South China显示文摘Stable isotope analyses in sections across a shelf to basinal transect of the Ediacaran Doushantuo basin show substantial isotope variabilities. In Songlin section where sediments were deposited in an intrashelf basin, δ 13C values are persistently negative (_3‰ to _5‰, VPDB) through the entire Doushantuo Formation, similar to those obtained from the slope section in Wuhe (_5‰ to _10‰, VPDB). Shallow water sections in Weng'an and Duoding show two broad δ 13C anomalies overprinted with significant meter-scale variations, but none of the curves has similar absolute δ 13C values compared to the Yangtze Gorges areas in South China and other sections globally. Such isotope variations, if partially recording ancient seawater signature, imply spatial and temporal chemocline instability in the Doushantuo basin. In combination with available δ 13C records from other Ediacaran successions globally, the data from the Doushantuo basin are consistent, in first order, with the existence and oxidation of a large dissolved organic carbon (DOC) reservoir in Ediacaran oceans, but imply local environmental controls on Neoproterozoic isotope values and call attentions for using δ 13C anomalies as time lines in stratigraphic correlation. | JIANG GanQing ZHANG ShiHong SHI XiaoYing WANG XinQiang | 2008 | Science China Earth Sciences2008，51，11： | 15 |
| 5 | 华南埃迪卡拉纪-寒武纪过渡期的有机碳同位素梯度和海洋分层显示文摘埃迪卡拉纪-早寒武世是地球历史上碳循环的重大波动期,但有关其成因和古环境意义仍存在很大分歧.为阐明这一问题,本文对华南晚埃迪卡拉纪.早寒武世两条剖面进行了高分辨的碳同位素研究.在浅水相区九龙湾.季家坡剖面,晚埃迪卡拉纪灯影组大部分δ^13Corg值在-29‰- -24‰变化;而在深水相区龙鼻嘴剖面,大部分δ^13Corg值在-35‰ - -32‰.这些新的研究结果与华南埃迪卡拉纪一早寒武世其他剖面发表的δ^13Corg数据对比表明,δ^13Corg在时间和空间上均存在着巨大变化,并受岩相的明显约束.在以碳酸盐岩为主的地层中,δ^13Corg相对较高,通常大于-30‰;而在黑色页岩和暗色硅质岩为主的地层中,δ^13Corg相对较低,一般小于-32‰.这种有机碳同位素组成的显著差异很难以存在巨大的溶解有机碳库(DOC)解释,我们认为不同微生物类群的贡献可能是导致这种差异的主要因素.浅水相样品中较高的δ^13Corg值(〉-30‰)与显生宙同位素变化相近,可能反映了光合作用为主的同位素分馏;而深水样品较低的δ^13Corg值(〈-32‰)可能反映了缺氧环境条件下化能自养或甲烷氧化微生物对有机质的重要贡献.这意味着在埃迪卡拉纪-早寒武世之交扬子地台的海洋仍处于强烈分层状态,且氧化还原界面波动频繁. | 王新强 史晓颖 GanQing JIANG 汤冬杰 | 2014 | 中国科学:地球科学2014，44，6： | 12 |
| 6 | Organic carbon isotope gradient and ocean stratification across the late Ediacaran-Early Cambrian Yangtze Platform显示文摘Organic carbon isotope(δ13Corg) data from two well-preserved sections across a shallow-to-deep water transect of the late Ediacaran-Early Cambrian Yangtze Platform in South China show significant temporal and spatial variations. In the shallow-water Jiulongwan-Jijiapo section, δ13Corg values of the late Ediacaran Dengying Formation range from -29‰ to -24‰. In the deep-water Longbizui section, δ13Corg values from time-equivalent strata of the Dengying Formation are mostly between –35‰ and -32‰. These new data, in combination with δ13Corg data reported from other sections in South China, reveal a 6‰–8‰ shallow-to-deep water δ13Corg gradient. High δ13Corg values(>-30‰) occur mostly in shallow-water carbonate rocks, whereas low δ13Corg values(<-32‰) dominate the deep-water black shale and chert. The large temporal and spatial δ13Corg variations imply limited buffering effect from a large dissolved organic carbon(DOC) reservoir that was inferred to have existed in Ediacaran-Early Cambrian oceans. Instead, δ13Corg variations between platform and basin sections are more likely caused by differential microbial biomass contribution to total organic matter. High δ13Corg values(>-30‰) documented from shallow-water carbonates are within the range of typical Phanerozoic δ13Corg data and may record the isotope signature of organic matter from primary(photosynthetic) production. In contrast, low δ13Corg values(<-32‰) from deep-water sections may have resulted from higher chemoautotrophic or methanotrophic biomass contribution to bulk organic matter in anoxic environments. The δ13Corg data provide indirect evidence for ocean stratification and episodic chemocline fluctuations in the Ediacaran-Early Cambrian Yangtze Platform. | WANG XinQiang SHI XiaoYing JIANG GanQing TANG DongJie | 2014 | Science China Earth Sciences2014，57，5： | 11 |
| 7 | 青藏高原东缘中生代若尔盖古高原的发现及其地质意义显示文摘40 Ma B.P.'原青藏高原'的提出使得青藏高原的早期隆升历史受到越来越多的关注,但其向东的延伸情况不明。青藏高原东缘若尔盖高原、龙门山冲断带和四川盆地有机地构建了一个完整的原-山-盆体系,成为揭示青藏高原隆升和生长的理想场所,而位于高原内部若尔盖地块的红参1井更为此提供了宝贵素材。基于红参1井的构造恢复和低温热年代学研究结果,结合区域上已有的低温热年代学和古高程数据,提出青藏高原东缘在早新生代印-亚大陆碰撞之前就已形成了高原,称之为若尔盖古高原,并从基底构造属性、构造变形、地壳缩短与增厚、沉积记录等方面对其进行了论证。红参1井钻井剖面构造恢复结果揭示所钻遇7 000余米的三叠系复理石层系实际上有46%的厚度是由构造重复所致,连同广泛发育的晚三叠世埃达克质花岗岩以及利用中性岩浆岩Sr/Y比值估算的地壳厚度,共同表明青藏高原东部松潘-甘孜地区在晚三叠世就已发生了实质性的地壳加厚。红参1井多重低温热年代学[锆石(U-Th)/He,磷灰石裂变径迹和(U-Th)/He]测试结果揭示若尔盖地块分别在白垩纪中期(约120 Ma B.P.和约80 Ma B.P.)经历了2次快速的冷却事件,累计剥蚀厚度达5 km,之后转入极其缓慢的冷却过程,暗示其已进入高原化阶段;而在整个新生代期间处于近乎'零'剥蚀的状态而被动地抬升到现今高度(不同于常见的山脉隆升,地块隆升代表了一定范围的区域整体抬升)。因此,青藏高原东部若尔盖地块最晚在白垩纪末期就已形成高原,即若尔盖古高原,其范围可能包括三叠系复理石层系覆盖的大部分松潘-甘孜地区,并可能向西与羌塘古高原相连,构成羌塘-若尔盖古高原。若尔盖古高原的形成不仅造成四川盆地西缘在白垩纪中期出现了重要的物源转变,更重要的是加剧了青藏高原东缘白垩纪气候干旱化,出现了大量沙漠沉积和膏盐沉积。若尔盖古高原的发现不仅有助于深化对青藏高原隆升和生长过程的理解,也将引发对青藏高原形成机制的重新思考以及对其气候-环境-资源效应的关注。 | 刘树根 李智武 Peter J.J.Kamp 冉波 李金玺 邓宾 王国芝 Ganqing XU Martin Daniík 杨迪 王自剑 李祥辉 刘顺 李巨初 | 2019 | 成都理工大学学报(自然科学版)2019，46，1： | 7 |
| 8 | 华南宜昌陡山沱组四段碳酸盐结核形成环境研究及其烃源岩评价意义显示文摘结核对揭示沉积物早期埋藏和成岩环境有重要意义.对峡东地区陡山沱组四段黑色页岩中碳酸盐结核的物质成分、微观组构和有机质分析,揭示了碳酸盐结核的形成环境和演化.陡山沱组结核形成于沉积早期沉积物-水界面下0~3m处,与微生物分解有机质密切相关.高有机质、草莓状黄铁矿和纸房状构造(card-house)的存在揭示了原始的静水缺氧沉积环境,推测在硫酸盐还原阶段产生大量胶结碳酸盐,充填以前的气孔形成球状微晶白云石构造.陡山沱组结核以透入性模式生长,碳酸盐胶结在整个结核中同时析出结晶.岩石有机质热解分析显示,陡山沱组结核相对围岩有较小的TOC含量和较大的有效碳含量;结核的孔隙对有机质具有封闭作用,可使高成熟区亦存在较大的生油潜力.结核是一种广义微生物岩,其独特的形成条件有利于揭示沉积成岩阶段的微生物环境. | 董进 张世红 Ganqing Jiang 赵庆乐 李海燕 史晓颖 刘俊来 | 2009 | 中国科学(D辑)2009，39，3： | 7 |
| 9 | Sequence Stratigraphy of Upper Proterozoic Glacigenous Rocks in Southeastern Margin of Yangtze Platform显示文摘The Upper Proterozoic glacigenous rocks in the southeastern margin of the Yangtze platform were accumulated in a glacially influenced marine environment with extension set- ting. Two type I depositional sequences have been identified in the glacioclastic sediments the their boundaries enhanced by both tectonism and the incision of glaciation. The lower sequence (SQ1), comprising Changan and Fulu formations (Guangxi Province), Jiangkou and Xiangmen formations(Hunan Province) and their equivalents, is bounded by erosional unconformities both at the base and on the top. The upper sequence (SQ2), composed mainly of Nantuo Formation and its equivalents, is confined by an erosional unconformity at the base and covered by an exposure surface of karstification on the top. The depositional systems tracts are difficult to be distinguished directly and mainly characterized by the variation in glacioclastic supplies. Two types of episodic parasequeuces can be identified in the glacigenous rocks and are related to the evolution of depositional systems tracts. Both the sequences and parasequences are caused by autocyclic mechanism. The present research shows that the Upper Proterozoic glacigenous deposits are of significance for the analysis of the tectonic evolution of the Late Precambrian basin in South China. | Jiang Ganqing Wang Ziqiang Zhang Linghua (Department of Geology and Mineral Resources, China University of Geosciences, Beijing 100083) | 1996 | Journal of Earth Science1996，15，1： | 6 |
| 10 | Late 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 | 2007 | Acta Geologica Sinica(English Edition)2007，81，6： | 5 |
| 11 | Environment controls on Mesoproterozoic thrombolite morphogenesis:A case study from the North China Platform显示文摘Thrombolites are widespread in the Mesoproterozoic Wumishan Formation in the North China Platform.This study shows that they mainly concentrated in subtidal carbonate facies with relatively low hydrodynamic conditions,rather than in intertidal zone as suggested previously.From the deep lower to the shallow upper subtidal facies,the thrombolites show evident changes in morphology from dominantly domal to tabular forms,likely suggestive of environmental controls on their morphogenesis and distribution.As the most important component in thrombolites,mesoclots typically consist of organic-rich micritic nuclei and organic-poor fibrous aragonite rims.Mesoclots may vary considerably in their morphology,but a type of specifically shaped mesoclots tends to concentrate predominantly in a particular group of thrombolites.The proportion of the fibrous aragonite rims in mesoclots decrease as the depositional environments become shallower,likely suggesting that the environmental changes also have controls on the internal fabrics of thrombolites.Putative filamentous bacterial colonies are well preserved in some aragonite fans in the matrix between mesoclots,invoking rapid precipitation and aragonite-supersaturated conditions in the ambient waters.It seems that a suboxic to anoxic environment,highly alkaline seawater and relatively low hydrodynamic conditions were among the important factors that facilitated the development and preservation of thrombolites in the Mesoproterozoic epeiric sea on the North China Platform. | Tang Dongjie Shi Xiaoying Jiang Ganqing Pei Yunpeng Zhang Wenhao | 2013 | Journal of Palaeogeography2013，2，3： | 5 |
| 12 | Early diagenetic growth of carbonate concretions in the upper Doushantuo Formation in South China and their significance for the assessment of hydrocarbon source rock显示文摘Mineralogical and textural characteristics and organic carbon composition of the carbonate concretions from the upper Doushantuo Formation (ca. 551 Ma) in the eastern Yangtze Gorge area reveal their early diagenetic (shallow) growth in organic-rich shale. High organic carbon content (up to 10%) and abundance of framboidal pyrites in the hosting shale suggest an anoxic or euxinic depositional environment. Well-preserved cardhouse clay fabrics in the concretions suggest their formation at 0-3 m burial depth, likely associated with microbial decomposition of organic matter and anaerobic oxidation of methane. Gases through decomposition of organic matter and/or from methanogenesis created bubbles and cavities, and anaerobic methane oxidation at the sulfate reduction zone resulted in carbonate precipitation, filling in bubbles and cavities to form spherical structures of the concretions. Rock pyrolysis analyses show that the carbonate concretions have lower total organic carbon (TOC) content but higher effective carbon than those in the host rocks. This may be caused by enclosed organic matter in pores of the concretions so that organic matter was protected from further modification during deep burial and maintained high hydrocarbon generating potential even in over-matured source rock. As a microbialite sensu latu, concretions have special growth conditions and may provide important information on the microbial activities in depositional and early burial environments. | DONG Jin ZHANG ShiHong JIANG GanQing ZHAO QingLe LI HaiYan SHI XiaoYing LIU JunLai | 2008 | Science China Earth Sciences2008，51，9： | 4 |
| 13 | Sand veins and MISS from the Mesoproterozoic black shale (ca. 1.7 Ga) in North China:Implication for methane degassing from microbial mats显示文摘The Mesoproterozoic Chuanlinggou Formation (ca. 1.7 Ga) consists mainly of dark-gray to black shales that are widespread in the North China Platform. Abundant centimeter-scale sand veins are present within the shale layers of this unit, particularly in the middle part. Sand veins display ptygmatic shapes, perpendicular or with a high angle to bedding planes. They penetrate the black shale layers but are often terminated by thin, lenticular sandstone beds, forming small-scale ‘tepee-like’ structures. On bedding planes, sand veins are expressed as small ridges with 1–3 mm positive relief. Lack of polygonal shapes and their occurrence in thinly laminated, relatively deep-water shales preclude an origin from sand-filled desiccation cracks. Instead, their close association with microbially induced sedimentary structures (MISS) such as micro-wrinkles and gas blisters, putative bacterial fossils (possibly coccoidal cyanobacteria) and framboidal pyrites, suggests that they were formed by degassing of methane from microbial mat decay. Methane gas disrupted overlying sedimentary layers, creating fractures open to seawater. Fine-grained quartz sands, which were transported into the depositional environment by strong winds, filled the fractures. Sand-filled fractures were shortened and folded during burial compaction, forming ptygmatic shapes. The presence of dispersed dolomite and siderite in these sand veins suggests authigenic carbonate precipitation from anaerobic oxidation of methane (AOM). Sand veins are intensely distributed within the Chuanlinggou Formation and are spatially widespread in the North China Platform. If their methane origin is confirmed, they may have important implications for the Mesoproterozoic paleoclimate. With anoxic oceans and low seawater sulfate concentration during the Mesoproterozoic, methane release from microbial mat decay and/or microbial methanogenesis during shallow burial may have been proportionally higher than that of the modern marine environments, with resultant increase in the relative importance of methane in maintaining the Mesoproterozoic greenhouse climate. | SHI XiaoYing JIANG GanQing ZHANG ChuanHeng GAO LinZhi LIU Juan | 2008 | Science China Earth Sciences2008，51，11： | 3 |
| 14 | Sequence Stratigraphy and Relative Sea Level Changes in Sinian System of Yichang, Hubei Province显示文摘The study on outcrop sequence stratigraphy of the Sinian section in the Yangtze Gorges an important step in the comprehensive stratigraphy for the Sinian stratotype. In this paper, the base of the Nantuo tillite is selected as the bottom boundary of the Sinian, and the top of the Baimatuo Member of the Dengying Formation is taken as the top boundary. The Sinian lasted from 740 the to 570 Ma. According to the features of sequence boundary facies and the parasequence sets, two supersequences are recognized in the Sinian with six sequences. In this paper, the authors discuss the correlation of those sequences. On the basis of the subsidence rate and the thickness of decompressed deposits, the authors discuss the mechanism of tectonic and sedimentation of the Dengying Formation and the features of high-frequency rhythms as well as the 3rd-order sequences in the Yangtze Gorges. | Wang Ziqiang (Department of Geology and Mineral Resources, China University of Geosciences, Beijing 100083) Gao Linzhi (Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037) Zhang Linghua Jiang Ganqing Zhang Chuanheng Yin Yong (Dep | 1996 | Journal of Earth Science1996，15，1： | 2 |
| 15 | Stable isotopic evidence for methane seeps in Neoproterozoic postglacial cap carbonates显示文摘 | GANQING JIANG KENNEDY M J NICHOLAS C B | | Nature0，426，6968： | 1 |
| 16 | Stable isotopic evidence for methane seeps in Neoproterozoic postglacial cap carbonates显示文摘 | GANQING JIANG KENNEDY M J NICHOLAS CHRISTIE-BLICK | 2003 | Nature2003，426，： | 1 |
| 17 | New U-Pb age from the basal Niutitang Formation in South China: Implications for diachronous development and condensation of stratigraphic units across the Yangtze plat-form at the Ediacaran-Cambrian transition显示文摘 | Wang Xinqiang Shi Xiaoying Jiang Ganqing | 2012 | Jottrnal of Asia Earth Sciences2012，48，： | 1 |
| 18 | Microbial nu-cleation of Mg-rich dolomite in exopoIymeric substancesunder anoxic modern seawater salinity:New insight into an old enigma显示文摘 | Shi Xiaoying Zhang Chuanheng Jiang Ganqing | | Journal of China University of Geosciences0，19，5： | 1 |
| 19 | Discussion on several premises for south north water transfer project显示文摘 | Xu Ganqing | 1999 | Science and Technology Bulletin1999，，5： | 1 |
| 20 | ACaseStudyofMicrowaveprocessingofMetalHy-droxideSedimentSludgefromPrintedCircuitBoardManufac-turingWashWater显示文摘 | GANQ | 2000 | WasteManagement2000，20，8： | 1 |
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