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| 1 | 二叠纪-三叠纪之交重大地质突变期微生物对环境的作用显示文摘生物与环境之间是相互作用和协同演化的.目前在生物对环境变化的响应方面已取得了许多重要的认识,而在生物对环境作用方面的认识还非常薄弱.本文以二叠纪-三叠纪之交这一生物与环境的重大突变期为例,探讨了微生物对环境的作用并指出了下一步的重点突破方向.类脂物生物标志化合物、C-N-S稳定同位素地球化学和矿物学的研究表明,硫酸盐还原微生物功能群、H2S的厌氧氧化微生物功能群、产甲烷微生物功能群、甲烷的好氧氧化微生物功能群、反硝化微生物功能群和固氮微生物功能群在二叠纪-三叠纪之交显著繁盛.不同微生物功能群既可以加剧环境的恶化,也可以改善环境,正是这些多方面的微生物作用才使得地球环境不至于向一个方向演变,而是处于一个能够自我调节的状态. | 罗根明 谢树成 刘邓 Thomas J ALGEO | 2014 | 中国科学:地球科学2014，44，6： | 4 |
| 2 | 南盘江地区二叠纪-三叠纪之交浅水台地古氧相研究显示文摘海洋缺氧被认为是导致二叠纪末生物大灭绝的重要原因之一,但是缺氧时限和缺氧程度在不同地区的差异仍未得到很好的解决.为深入探索二叠纪-三叠纪之交浅水相区海洋缺氧的演变过程和形成机理,对位于'大贵州滩'台地内部打讲剖面的二叠系-三叠系界线地层中的生物组成和关键地球化学指标进行了系统研究.大灭绝前的浅水碳酸盐岩台地表现出低硫(总硫,黄铁矿硫),低黄铁矿硫/有机碳比值(硫黄铁矿/C有机),低黄铁矿化系数(DOP)的特征,同时记录了碳同位素的负偏和硫化氢气体释放事件,表明该时期以氧化环境为主;大灭绝后的各种地球化学指标显示浅水台地开始向贫氧-缺氧环境转变,但缺氧程度不高,主要为贫氧-缺氧相.以此为基础,本文提出该时期南盘江盆地古氧相的基本演变模式,即大灭绝前频繁的火山活动释放大量CO2,SO2等气体,使得气温出现上升,导致陆地生态系统开始瓦解,陆地风化速率加快,陆源输入的增加引发碳同位素负偏;与此同时,陆源物质输入的增加还导致海洋贫氧层(OMZ)扩张.当OMZ间歇性入侵透光带时,导致H2S气体向浅水台地释放,从而引发黄铁矿埋藏脉冲式上升的现象.大灭绝后,气温急剧上升,陆地风化速率加剧,OMZ急剧扩张,'大贵州滩'浅水台地开始向贫氧-缺氧环境转变.由此可见,二叠纪末的生物大灭绝是由火山活动增强,升温事件和海洋缺氧等一系列环境因素引发的.结合最新的研究结果,笔者认为该时期的升温事件是引发生物大灭绝的主导因素,同时也是导致海洋缺氧加剧的主要原因.此外,本文新的地球化学数据进一步证实了该地区的微生物岩形成于贫氧-缺氧环境. | 宋虎跃 童金南 田力 宋海军 邱海鸥 朱园园 Thomas J ALGEO | 2014 | 中国科学:地球科学2014，44，6： | 3 |
| 3 | Microbial influences on paleoenvironmental changes during the Permian-Triassic boundary crisis显示文摘The biosphere interacts and co-evolves with natural environments.Much is known about the biosphere’s response to ancient environmental perturbations,but less about the biosphere’s influences on environmental change through earth history.Here,we discuss the roles of microbes in environmental changes during the critical Permian-Triassic(P-Tr)transition and present a perspective on future geomicrobiological investigations.Lipid biomarkers,stable isotopic compositions of carbon,nitrogen and sulfur,and mineralogical investigations have shown that a series of microbial functional groups might have flourished during the P-Tr transition,including those capable of sulfate reduction,anaerobic H2S oxidation,methanogenesis,aerobic CH4oxidation,denitrification,and nitrogen fixation.These microbes may have served to both enhance and degrade the habitability of the Earth-surface environment during this crisis.The integrated microbial roles have enabled the Earth’s exosphere to be a self-regulating system. | LUO GenMing XIE ShuCheng LIU Deng Thomas J. ALGEO | 2014 | Science China Earth Sciences2014，57，5： | 2 |
| 4 | High-resolution carbon isotopic records from the Ordovician of South China: Links to climatic cooling and the Great Ordovician Biodiversification Event (GOBE)显示文摘 | Tonggang Zhang Yanan Shen Thomas J. Algeo | 2010 | Palaeogeography Palaeoclimatology Palaeoecology2010，，1： | 2 |
| 5 | Trace-element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-type cyclothems显示文摘 | Thomas J Algeo J.Barry Maynard | 2004 | Chemical Geology2004，，： | 2 |
| 6 | Trace metals as paleoredox and paleoproductivity proxies: An update显示文摘 | Nicolas Tribovillard Thomas J. Algeo Timothy Lyons Armelle Riboulleau | 2006 | Chemical Geology2006，，1： | 2 |
| 7 | Paleoproductivity and paleoredox conditions during late Pleistocene accumulation of laminated diatom mats in the tropical West Pacific显示文摘 | Zhifang Xiong Tiegang Li Thomas Algeo Qingyun Nan Bin Zhai Bo Lu | 2012 | Chemical Geology2012，，： | 1 |
| 8 | Trace metals as paleoredox and paleoproductivity proxies- An update显示文摘 | Tribovillard N Algeo T J Lyons T Riboulleau A | 2006 | Chemical Geology2006，232，： | 1 |
| 9 | Trace-element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-type eyclothems 显示文摘 | ALGEO T J MAYNARD B J | 2004 | Chemical Geology2004，206，： | 1 |
| 10 | Analysis of marine environmental conditions based onmolybdenum–uranium covariation—Applications to Mesozoic paleoceanography显示文摘 | N. Tribovillard T.J. Algeo F. Baudin A. Riboulleau | 2011 | Chemical Geology2011，，： | 1 |
| 11 | Trace-element behavior and redox facies in core shales of Upper Pennsylvanian Kansas-type cyclothems显示文摘 | Algeo T J Maynard J B | 2004 | Chemical Geology2004，206，： | 1 |
| 12 | Paleoceanographic conditions following the end-Permian mass extinction recorded by giant ooids (Moyang, South China)显示文摘 | Fei Li Jiaxin Yan Thomas Algeo Xia Wu | 2011 | Global and Planetary Change2011，，： | 1 |
| 13 | Periodicity of mesoscale Phanerozoic sedimentary cycles and the role of Milankovitch orbital modulation显示文摘 | Algeo T J Wilkinson B H | 1988 | Journal of Geology1988，96，3： | 1 |
| 14 | Environmental analysis of paleoeeanographie systems based on molybdenum - uranium covariation 显示文摘 | ALGEO T J TRIBOVILLARD N | 2009 | Chemical Geology2009，268，： | 1 |
| 15 | Paleoceanographic applications of trace-metal concentration data显示文摘 | Thomas J. Algeo Harry Rowe | 2011 | Chemical Geology2011，，： | 1 |
| 16 | Trace-element behavior and redox facies in core shales of Upper Pennsylwnian Kansas-type cyclothems 显示文摘 | Algeo T J Maynard J B | 2004 | Chem Geol2004，206，34： | 1 |
| 17 | Environmental analysis of paleoceanographic systems based on molybdenum-uranium covariation显示文摘 | Algeo T J Tribovillard N | 2009 | Chemical Geology2009，268，34： | 1 |
| 18 | Trace metals as paleoredox and paleoproductivity proxies: An update显示文摘 | Tribovillard N Algeo T J Lyons T | 2006 | ChemicalGeology2006，232，： | 1 |
| 19 | Trace metals as pal- eoredox and paleoproductivity proxies: An update显示文摘 | Tribovillard N Algeo T J Lyons T | 2006 | Chemical Geology2006，232，12： | 1 |
| 20 | Trace metals as paleoredox and paleoproductivity proxies:An update显示文摘 | Tribovillard N Algeo T J Lyons T | 2006 | Chemical Geology2006，232，12： | 1 |
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