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| 1 | 遗迹化石对显生宙5大生物-环境事件的响应显示文摘通过系统梳理与奥陶纪-志留纪、晚泥盆世弗拉期-法门期、二叠纪-三叠纪、三叠纪-侏罗纪、白垩纪-古近纪之交的5次生物大灭绝期遗迹化石记录相关的生物和环境事件,发现遗迹化石对5次大灭绝事件为负响应,即在大灭绝事件之后的残存期和复苏期期间,遗迹化石的多样性、丰度、潜穴直径、生物扰动强度、遗迹组构阶层都大为减小.遗迹化石反映的造迹生物行为习性和觅食策略在5次生物大灭绝事件后也各有不同,食沉积物性觅食策略在晚奥陶世和晚白垩世大灭绝事件之后占据主导,滤食性觅食策略在晚三叠世大灭绝事件之后占据主导,机会主义遗迹(如Planolites)、食沉积物性和滤食性等多种觅食策略和行为习性在晚泥盆世F-F和晚二叠世两次大灭绝事件之后占据主导.晚泥盆世F-F和晚二叠世两次大灭绝事件之后,遗迹化石记录了底栖生物系统由简单向复杂、由二维向三维生态空间拓展的变化趋势. | 张立军 赵曌 龚一鸣 | 2015 | 地球科学(中国地质大学学报)2015,40,2: | 12 |
| 2 | 贵州独山地区晚泥盆世F-F生物灭绝后的先驱生物及其在生态系统重建过程中的意义显示文摘生物集群灭绝后,大多数地区变成一个没有或缺乏生态系统的“生态裸地”.研究率先进入这一“生态裸地”的先驱生物和在这一“生态裸区”上早期生态系统的形成过程,对于阐明生物集群灭绝后生物演化非常重要.晚泥盆世弗拉期(Frasnian)-法门期(Famennian)(F-F)之交生物集群灭绝事件后,在贵州独山地区遗迹化石的出现和繁盛明显早于其他生物实体化石.一些构造相对简单、在沉积物表面活动并以食沉积物为主的造迹生物往往率先进入这一集群灭绝后的“生态裸地”,其习性构造经历了由简单到复杂的、从由二维层面到三度空间的开拓和发展,遗迹化石的结构显示出这类造迹生物改造沉积物的能力逐渐增强、分异度逐渐增大的觅食效率提高,逐步建立起一个新的生态系统的基础.这个过程与前寒武纪-寒武纪之交的遗迹化石所显示的演化特征颇为相近.弗拉期-法门期生物灭绝事件之后,独山地区法门期的实体化石因泥盆纪-石炭纪界线之交的又一次灭绝事件只存在复苏阶段,而缺少辐射阶段,但遗迹化石结构和多样化演化的特征显示其经历了复苏期和辐射期两个发展阶段.遗迹化石的演化为其他生物的复苏发挥了必要的生态链铺垫作用.在生物集群灭绝后的“生态裸地”上,随着导致灭绝事件的环境因素逐渐消失,新生态系统的重建经历了“雏形生态系统”和“基础生态系统”两个形成生态链的铺垫阶段后,逐步形成了一个“发达生态系统”.新生态系统的建立为生物群复苏奠定了重要的基础. | 王约 王训练 史晓颖 | 2006 | 中国科学(D辑)2006,36,4: | 10 |
| 3 | 华南泥盆纪遗迹化石及遗迹相显示文摘通过对华南泥盆系6条剖面(四川北川甘溪、广西横县六景、广西桂林杨堤、贵州独山大河口-白虎坡、贵州贵阳乌当、四川广元后高坪)的遗迹沉积学系统研究,鉴定和描述遗迹化石15属24种,包括Arenicolites carbonaria,Arenicolites isp.,Chondrites cf.intricatus,Chondrites fenxiangensis,Chondrites filifalx,Chon-drites isp.,Chondrites maqianensis,Circulichnis isp.,Dushanichnus dahekouensis,Diplocraterion parallelum,Rusophy-cus lungmenshanensis,?Helminthopsis isp.,Palaeophycus tubularis,Palaeophycus curvatus,Phycodes palmatus,Planol-ites beverleyensis,Planolites isp.,Planolites kwangsiensis,Rosselia socialis,Rhizocorallium jenense,Rhizocorallium isp.,Skolithos linearis,Thalassinoides isp.,Zoophycos isp.。根据遗迹化石之间的共生组合关系、实体化石特征和其他相标志,识别出4种遗迹相:Skolithos,Rhizocorallium,Cruziana和Zoophycos遗迹相。Skolithos遗迹相主要发育于浪控型海岸体系、潮控型海岸体系和障壁岛-潟湖沉积体系的高能沉积区;Rhizocorallium遗迹相主要发育于潮控型海岸体系和障壁岛-潟湖沉积体系的低能沉积区;Cruziana遗迹相发育在浅海陆棚、具有丰富的生物及食物的砂泥岩和灰岩为主的低能沉积区;Zoophycos遗迹相沿泥岩和泥灰岩发育的滨外沉积区分布。华南泥盆纪遗迹相从早泥盆世到晚泥盆世的演替规律是从Skolithos遗迹相→Rhizocorallium遗迹相→Cruziana遗迹相→Zoophycos遗迹相→Rhizocorallium遗迹相。早泥盆世晚期以后华南泥盆纪同时期的遗迹相自西南向东北的空间变化规律则表现为Zoophycos遗迹相→Cruziana遗迹相→Rhizocorallium遗迹相→Skolithos遗迹相。 | 张立军 龚一鸣 马会珍 | 2011 | 古地理学报2011,13,4: | 8 |
| 4 | Pioneer organisms after F-F mass extinction in Dushan region,Guizhou Province,and their significance in establishing new ecosystem显示文摘After mass extinctions, most areas became “ecologically barren areas” lacking or even without ecosystem over an extensive region. Studying the pioneer organisms and the reconstruction process of a new ecosystem in the “ecologically barren area” is very important for revealing the evo- lution after bio-mass extinctions. In the Dushan region, Guizhou Province, China, the trace fossils appeared and flourished evidently earlier than body fossils after Frasnian-Famennian (F-F) mass extinction. The pioneer organisms and pathfinders in the “ecologically barren areas” are the trace-makers that are deposit-feeders with relatively simple structure and conformation on or near the deposit surface. The trace-makers have undergone an evolutionary process that their trace structures changed from simple to complex, and their living and moving areas and spaces enlarged from linear to planar and then to three-dimension spaces. Those characters show that the ability of the trace-makers to deposits and their efficiency of looking for food have been enhanced gradually and that those trace-makers constructed gradually a base for the new ecosystem. This process is similar to that of the trace fossils near the Precambrian-Cambrian boundary. In the Dushan area, only the recovery intervals have been identified for the Famennian body fossils, with no eminent radiation interval recognizable due to the Devonian-Carboniferous (C-D) mass ex- tinction. However, both the recovery and radiation intervals may be clearly recognized in the Famen- nian trace fossils based on their conformation and diversity. The evolution and diversification of the trace fossils in the “ecologically barren area” is considered to have played a role of necessary foun- dation for the recovery of body fossils in the ecological chain. With the gradual disappearance of the unfavourable environment factors resulting in the F-F mass extinction, a new ecosystem was reconstructed in the “ecologically barren area” through a three-step process from the “original ecosystem” to “elementary ecosystem” and finally to the “developed eco- system”. The establishment of the new ecosystem has laid a foundation for the recovery of the body fossils thereafter. | WANG Yue1, 2, WANG Xunlian1 & SHI Xiaoying1 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China 2. School of Resources and Environment, Guizhou University, Guiyang 550003, China | 2006 | Science China Earth Sciences2006,49,5: | 7 |
| 5 | Cambrian Ichnofossils from the Zhoujieshan Formation(Quanji Group) Overlying Tillites in the Northern Margin of the Qaidam Basin, NW China显示文摘The Quanji Group is composed of siliciclastics and carbonates and was deposited on a relatively stable block, in the northern margin of the Qaidam Basin, NW China. It is one of the research hotspots in the Qilian-Qinling-Kunlun tectonic zones. However, it has long been argued whether the upper Quanji Group should be assigned to the Precambrian or the Cambrian for lack of convincing fossil evidence. The discovery of ichnofossils, including Rusophycus, Cruziana, Dimorphichnus, Treptichnus, Skolithos, Arenicolites, Palaeophycus, and Helminthopsis, indicates that the upper member of the Zhoujieshan Formation(top Quanji Group) is Cambrian in age, and at least above the Treptichnus(Phycodes) pedum Biozone, the lowermost biozone in the Cambrian. The lower member of the Zhoujieshan Formation should belong to the Cambrian. During the time when the upper member of the Zhoujieshan Formation was deposited, the northern margin of the Qaidam Basin was dominated by the Cruziana Ichnofacies, characterizing a lower-energy shelf(shallow) sea environment with moderate-rich oxygen contents. In addition, the conglomerates in the Hongtiegou Formation of the Quanji Group underlying the Zhoujieshan Formation were generally regarded as tillites. However, the dolostones of the lower member of the Zhoujieshan Formation are, in lithology and geochemistry, different from the typical cap-dolostones of the Doushantuo Formation in South China, so it is necessary to further study the origins of the lower member of the Zhoujieshan Formation and the conglomerates of the Hongtiegou Formation. | Yue Wang Xunlian Wang Ye Wang | 2015 | Journal of Earth Science2015,26,2: | 3 |
| 6 | 湖北黄石早三叠世的遗迹化石及其古环境意义显示文摘系统研究了湖北黄石新下陆下三叠统嘉陵江组碳酸盐岩地层中6个属的遗迹化石:Helminthopsis,Palaeophycus,Phycodes,Planolites,Rhizocorallium,Scalarituba,确认上述遗迹化石属于Cruziana遗迹相,依据风暴沉积及遗迹化石的组合推断嘉陵江组沉积序列是正常潮坪、浅海陆棚、浅水蒸发岩的沉积旋回。黄石地区的遗迹化石与美国西部弗吉尼亚早三叠世早期到晚期的演化特征以及前寒武纪-寒武纪之交、晚泥盆世弗拉期-法门期之交的遗迹化石所显示的演化特征颇为相近,这一耦合现象可能与生物-环境的系统演化有关。 | 马会珍 罗茂 龚一鸣 | 2008 | 地质科技情报2008,27,3: | 3 |
| 7 | 黔南独山泥盆纪海平面变化与生物群的关系显示文摘通过对黔南独山地区泥盆纪地层、古生物群面貌和海平面相对变化的研究,认为海平面的升降变化不仅控制和影响着生物群落的取代和演替,同时对生物的灭绝与复苏等方面也起着重要的影响作用。 | 王约 | 2004 | 贵州工业大学学报(自然科学版)2004,33,2: | 3 |
| 8 | 环节动物--早三叠世生物复苏的先驱者?显示文摘华南四川广安谢家槽、贵阳花溪和下扬子地区、意大利北部均显示环节动物产生的遗迹化石出现在下三叠统近底部,而节肢动物所产生的遗迹化石出现层位则较高,表明环节动物在二叠纪末生物大灭绝后的复苏早于节肢类造迹生物,也早于其它底栖生物。早三叠世经历了缺乏遗迹化石、环节动物造迹生物所产生的遗迹化石组合以及包括环节动物和节肢类动物的软躯体造迹生物所产生的遗迹化石组合三个阶段。具有较复杂结构的Thalassinoides在加拿大西部早三叠世早期出现,表明高纬度地区海洋生态条件的改善和生物复苏要早于低纬度地区。 | 周志澄 罗辉 李罡 Willems H 许波 蔡华伟 陈金华 陈迪舒 王学恒 | 2015 | 古生物学报2015,54,1: | 2 |
| 9 | 贵州独山泥盆纪晚期生物绝灭的影响因素显示文摘独山地区晚泥盆世弗拉期-法门期(F-F)和泥盆纪-石炭纪(D-C)的生物集群绝灭事件可能与海平面的快速大幅度下降有关,与藻类迅速而大量繁殖和生物生态链破坏的关系更为密切。 | 吴如志 王约 | 2008 | 贵州工业大学学报(自然科学版)2008,37,3: | 1 |
| 10 | 中国南方古生代的一些海相新藻类(英文)显示文摘本文报道中国南方广西、贵州晚泥盆世-早石炭世的钙质微体古生物,描述红藻新属Yishanella及其二个新种(Yishanelle filosasp.nov.,Y.multitubalasp.nov.),一个绿藻新种(Pseudokamaenaregularissp.nov.)和一种分类位置未定化石(Menselina nanasp.nov.)。该微体植物群繁衍于透光带中。识别出三个组合,分别代表清洁水体的Girvanella,泥质的Issinella和介于二者之间的Menselina环境。 | B. MAMET | 2011 | 微体古生物学报2011,28,1: | 0 |
| 11 | 全国卫生计生宣传工作会议在京召开显示文摘本刊讯 2月11日,全国卫生计生宣传工作会议在京召开,明确了做好新时期卫生计生宣传工作的重要任务、工作思路和目标要求。国家卫生和计划生育委员会主任、党组书记李斌出席会议并讲话,副主任崔丽主持会议并作总结讲话。 | 本刊讯 | 2014 | 中国药房2014,25,10: | 0 |