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Microbially-mediated formation of Ca-Fe carbonates during dissimilatory ferrihydrite reduction:Implications for the origin of sedimentary ankerite

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Science China Earth Sciences 2024年第1期67卷 208-221页

作者： Deng LIU Jinpeng CAO Shanshan YANG Yating YIN Pengcong WANG Dominic PAPINEAU Hongmei WANG Xuan QIU genming luo Zongmin ZHU Fengping WANG State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China School of Environmental Studies China University of GeosciencesWuhan 430074China London Centre for Nanotechnology University College LondonLondon WC1H 0AHUK Department of Earth Sciences University College LondonLondon WC1E 6BTUK Center for Planetary Sciences University College London and Birkbeck College LondonLondon WC1E 6BTUK State Key Laboratory of Microbial Metabolism State Key Laboratory of Ocean EngineeringShanghai Jiao Tong UniversityShanghai 200240China

The origin of sedimentary dolomite has become a long-standing problem in the Earth *** carbonate minerals like ankerite have the same crystal structure as dolomite,hence their genesis may provide clues to help solving the dolomite *** purpose of this study was to probe whether microbial activity can be involved in the formation of ***-carbonation experiments associated with microbial iron reduction were performed in batch systems with various concentrations of Ca^(2+)(0–20 mmol/L),with a marine iron-reducing bacterium Shewanella piezotolerans WP3 as the reaction mediator,and with lactate and ferrihydrite as the respective electron donor and *** biomineralization data showed that Ca-amendments expedited microbially-mediated ferrihydrite reduction by enhancing the adhesion between WP3 cells and ferrihydrite *** bioreduction,siderite occurred as the principal secondary mineral in the Ca-free ***,Ca-Fe carbonates were formed when Ca^(2+)ions were *** CaCO_(3) content of microbially-induced Ca-Fe carbonates was positively correlated with the initial Ca2+*** Ca-Fe carbonate phase produced in the 20 mmol/L Ca-amended biosystems had a chemical formula of Ca_(0.8)Fe_(1.2)(CO_(3))_(2),which is close to the theoretical composition of *** ankeritelike phase was nanometric in size and spherical,Ca-Fe disordered,and structurally *** simulated diagenesis experiments further demonstrated that the resulting ankerite-like phase could be converted into ordered ankerite under hydrothermal *** introduced the term“proto-ankerite”to define the Ca-Fe phases that possess near-ankerite stoichiometry but disordered cation *** the basis of the present study,we proposed herein that microbial activity is an important contributor to the genesis of sedimentary ankerite by providing the metastable Ca-Fe carbonate precursors.

关键词： Ankerite Proto-ankerite Microbial iron reduction Dolomite problem Mineral transformation

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地球表层系统对深部圈层时空演变的影响

科学通报 2024年第2期69卷 149-159页

作者：谢树成罗根明朱宗敏中国地质大学(武汉)生物地质与环境地质国家重点实验室地球科学学院武汉430074

地球系统科学研究的一个关键点是地球深部与表层系统的联动.深部过程通过火山作用对表层系统产生的重要影响已经取得了许多重要进展,认识比较薄弱的方面是表层系统如何影响深部的结构、过程和演化.板块俯冲将大量沉积物带入地幔过渡带... 详细信息

地球系统科学研究的一个关键点是地球深部与表层系统的联动.深部过程通过火山作用对表层系统产生的重要影响已经取得了许多重要进展,认识比较薄弱的方面是表层系统如何影响深部的结构、过程和演化.板块俯冲将大量沉积物带入地幔过渡带乃至核幔边界的D″层,可以导致地幔的不均一性.特别是,板块俯冲带入的水通过影响地幔物理性质而增强地幔的熔融和对流能力,进而又在一定程度上影响了地球深部的岩浆活动、变质作用,以及包括板块俯冲在内的构造运动.华北克拉通破坏及其相伴的岩石圈变化被认为是水通过板块俯冲而影响深部过程的一个体现.表层系统不仅影响了深部的结构和过程,而且还极大地影响了深部的地质演化.在前寒武纪,古元古代和新元古代两次雪球地球之后形成了巨量的洋底沉积物,这些沉积物进入俯冲带后提高了板块俯冲的润滑性及其速率,进而对该时期活跃的全球构造运动及超大陆形成产生一些影响.在显生宙,4.3亿年以来陆地植物的大发展和2亿年以来海洋三大浮游生物的大发展都通过改变沉积物成分而影响深部圈层物质的演化,分别导致碎屑锆石和金伯利岩在一些同位素组成上出现重大转变.这些极少量但非常重要的新认识对人们研究行星地球的运行机制及其地质演化至关重要.表层物质进入地幔关键带如何进行循环和演化,水等表层物质是否改变了深部圈层的演化方向及规模,这些都是亟待解决的重大科学难题.而要突破这些难题,需要建立有效的定性和定量化的示踪技术方法体系.

关键词：地球生物学地质微生物深地科学地球宜居性行星地球

大气增氧机制:地球表层过程与深部氧化还原状态的耦合

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科学通报 2024年第2期69卷 253-267页

作者：胡清扬罗根明李元北京高压科学研究中心北京100193 中国地质大学(武汉)地球科学学院武汉430074 中国科学院广州地球化学研究所同位素地球化学国家重点实验室广州510640

氧气是地球表面生命蓬勃发展的关键物质.目前的地球化学模型和矿物学证据认为,大气中的氧气主要源自生物作用,如通过藻类生物的光合作用.尽管源自生物作用的产氧机制占据相关研究的主流,氧元素实际占据了地球内部最大的摩尔分数,因此它... 详细信息

氧气是地球表面生命蓬勃发展的关键物质.目前的地球化学模型和矿物学证据认为,大气中的氧气主要源自生物作用,如通过藻类生物的光合作用.尽管源自生物作用的产氧机制占据相关研究的主流,氧元素实际占据了地球内部最大的摩尔分数,因此它在调整地壳和地幔的氧化还原状态方面发挥着重要作用,地球深部氧化还原水平的波动会对大气中的氧分压产生深远影响.本综述聚焦地质历史中的大气增氧机制,结合最新的生物地球化学和矿物学发现,讨论大气氧来自地球表层和深层的源与汇.越来越多的工作揭示,地球深层可能存在一个隐藏的氧储库,一些重大地质事件与这一深部氧储库可能密切相关.

关键词：氧氧化还原状态矿物化学挥发分循环

Mechanisms and climatic-ecological effects of the Great Oxidation Event in the early Proterozoic

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Science China Earth Sciences 2022年第9期65卷 1646-1672页

作者： genming luo Xiangkun ZHU Shuijiong WANG Shihong ZHANG Chaoqun JIAO State Key Laboratory of Biogeology and Environmental Geology and School of Earth SciencesChina University of GeosciencesWuhan 430074China MNR Key Laboratory of Isotope Geology MNR Key Laboratory of Deep-Earth DynamicsInstitute of GeologyChinese Academy of Geological SciencesBeijing 100037China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesBeijing 100083China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China

This paper briefly introduces the conception and research history of the Great Oxidation Event(GOE) in the early Paleoproterozoic and summarizes the primary geological and geochemical records of this event. On the basis of these, we overview the significant progress in three fields of the GOE: the timing and process of its startup, its mechanisms, and its climatic-ecological effects. The records of mass-independent fractionation of sulfur isotopes suggest that the startup of the GOE might be multi-episodic, which is obviously inconsistent with the single-episodic opinion obtained from atmospheric model simulations. The fundamental mechanism of the GOE was the source of the atmospheric Oexceeding the sink, but it remains uncertain whether it was due to the increase in the source or the decrease in the sink. The GOE substantially affected the climate,biological evolution, and biogeochemical cycles, but the specific processes remain elusive. In consideration of the current progress, we propose four aspects for future explorations, including the construction of geological and geochemical proxies for extremely low atmospheric oxygen content(pO), how the GOE changed the evolutions of Earth’s habitability and the processes in deep Earth, and constraining the mechanism of the GOE by coupling geological events with different time scales.

关键词： Great Oxidation Event Proterozoic Paleoceanography Mantle oxygen fugacity Biogeochemistry

Microbial influences on paleoenvironmental changes during the Permian-Triassic boundary crisis

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Science China Earth Sciences 2014年第6期57卷 965-975页

作者： luo genming XIE ShuCheng LIU Deng Thomas J. ALGEO State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences

The biosphere interacts and co-evolves with natural *** is known about the biosphere’s response to ancient environmental perturbations,but less about the biosphere’s influences on environmental change through earth ***,we discuss the roles of microbes in environmental changes during the critical Permian-Triassic(P-Tr)transition and present a perspective on future geomicrobiological *** 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 *** microbes may have served to both enhance and degrade the habitability of the Earth-surface environment during this *** integrated microbial roles have enabled the Earth’s exosphere to be a self-regulating system.

关键词：古环境变化微生物学二叠系三叠系界线地球历史硫同位素组成厌氧氧化

Size variation of the end Permian conodont Neogondolella at Meishan Section,Changxing,Zhejiang and its significance

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Science China Earth Sciences 2006年第4期49卷 337-347页

作者： luo genming LAI Xulong JIANG Haishui ZHANG Kexin Faculty of Earth Sciences China University of Geosciences Wuhan 430074 China Faculty of Earth Sciences China University of Geosciences Wuhan 430074 China Faculty of Earth Sciences China University of Geosciences Wuhan 430074 China Faculty of Earth Sciences China University of Geosciences Wuhan 430074 China

This study is based on both a generic and species level investigation of the individual size of the latest Permian conodont Neogondolella Pa elements collected from Meishan Section A, Changxing, Zhejiang Province. In this study, an obvious size reduction of Neogondolella Pa elements within bed 24e of the upper Changxing Limestone is recognized. The size variation of the Neogon- dolella occurs simultaneously with some important events including the negative shift of δ 13C, change in the ratio of the abundance of cyanobacterial biomarkers versus that of other general bacterial biomarkers and the shallowing of the sea water. Through the investigation of the paleoenvironmental changes and the analysis of the paleoecology of the conodont genus Neogondolella, the authors propose that the major factors for the size reduction of species of the conodont genus Neogondolella are food shortages caused by the mass extinction, the shallowing of the sea water as well as the in- crease in opacity of the sea water during the end Permian. The same phenomenon of Neogondolella size reduction is also observed in preliminary research from the same horizon at Shangsi Section, Sichuan Province. All the evidence suggests that there was a mass extinction that occurred at the horizon of bed 24e, and the evidence supports the viewpoint of a multi-phase mass extinction during the Permian and Triassic transition in South China.

关键词： Meishan Section, end Permian, conodont, Neogondolella, size reduction.

Discussion on geobiology, biogeology and geobiofacies

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Science China Earth Sciences 2008年第11期51卷 1516-1524页

作者： YIN HongFu XIE ShuCheng QING JianZhong YAN JiaXin luo genming Key Laboratory of Biogeology and Environmental Geology of Ministry of Education China University of GeosciencesWuhan 430074China State Key Laboratory of Geological Process and Mineral Resources China University of GeosciencesWuhan 430074China Wuxi Institute of Petroleum Geology SINOPECWuxi 214151China

Here we first discuss the definition of and the difference between geobiology and biogeology following a brief introduction of recent geobiology research in China. Geobiology is defined as an interdisciplinary study of life sciences and earth sciences, and biogeology as an interdisciplinary study of biology and geology. Scope of the term geobiology covers that of the term biogeology. Branch interdisciplines of both are listed. We then propose the term geobiofacies, defined as the facies of a geologic body embodying the whole process of interaction between organisms and environments. Differences among geobiofacies, biofacies, and organic facies are discussed. Main parameters defining a geobiofacies include habitat type, biotic composition and productivity, paleo-oxygenation regimes, and early diagenesis phases. Each of them is discussed in detail, and a semi-quantitative assessment of the biogeofacies of source rocks is proposed based on these parameters. A two-fold terminology for geobiofacies is recommended, namely, the biological and environmental aspects of biota and the redox conditions during life-burial-diagenesis

关键词： geobiology biogeology geobiofacies

Spatiotemporal variability of ocean chemistry in the early Cambrian,South China

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Science China Earth Sciences 2014年第4期57卷 579-591页

作者： JIN ChengSheng LI Chao PENG XingFang CUI Hao SHI Wei ZHANG ZiHu luo genming XIE ShuCheng State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences

Following the Ediacaran metazoan radiation,the "Cambrian Explosion" set up the major framework of todays' animal phyla as well as modern marine ***,we present a preliminary investigation on the temporal and spatial(from shallow to deep waters) variations of the early Cambrian ocean chemistry in South China through analyzing a Fe-S-C systematic dataset integrated from *** investigation indicates that the early Cambrian deep ocean in South China was still anoxic and Fe2+-enriched(i.e.,ferruginous) although its surface was oxic,and in between a metastable euxinic(anoxic and sulfidic) water zone may have dynamically developed in anoxic shelf waters with an increasing weathering sulfate ***,accompanying marine transgression and regression cycles in the early Cambrian,such a "sandwich" structure in ocean redox chemistry demonstrates five evolutional stages,which can be well correlated to the spatiotemporal patterns of fossil records in South *** good correlation between metazoan fossil occurrences and water chemistry in South China suggests that early animals possibly possessed ability to inhabit anoxic but generally not euxinic environments as free H2S was fatal to most *** view can well explain why those small shell fauna and sponges disappeared from shelf to slope areas where sulfidic Ni-Mo-rich shales were widely ***,we conclude that the spatiotemporal variations of ocean chemistry and its biological effects probably played a key role in the phased animal radiations and "extinctions" in the early Cambrian.

关键词：中国南方海洋化学早寒武世时空变异寒武纪大爆发 “三明治”结构后生动物海洋生态系统

Geomicrobial functional groups:A window on the interaction between life and environments

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Chinese Science Bulletin 2012年第1期57卷 2-19页

作者： XIE ShuCheng YANG Huan luo genming HUANG XianYu LIU Deng WANG YongBiao GONG YiMing XU Rana State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China

Microbes are well-known for their great diversity and abundance in modern natural *** also are believed to pro-vide critical links among higher organisms and their associated ***,the low diversity of morphological fea-tures and structures of ancient microbes preserved in sediments and rocks make them difficult to identify and *** diffi-culty greatly hinders the investigation of geomicrobes throughout Earth ***,most previous paleontological studies have focused on faunal and floral ***,geomicrobial functional groups(GFGs),or a collection of microbes featured in specific ecological,physiological or biogeochemical functions,are suggested to provide a way to overcome the difficulties of ancient mi-crobe *** are known for their great diversity in ecological,physiological and biogeochemical *** addi-tion,GFGs may be preserved as the biogeochemical,mineralogical and sedimentological records in sediments and *** reviewed the functions,origins and identification diagnostics of some important GFGs involved in the elemental cycles of carbon,sulfur,nitrogen and *** were further discussed with respect to their significant impacts on paleoclimate,sulfur chemistry of ancient seawater,nutritional status of geological environments,and the deposition of Precambrian banded iron formations.

关键词：自然环境相互作用生物地球化学微生物调查岩石地球化学条带状铁建造功能多样性窗口