Cretaceous Chert-Hosted Microfossils Visualized With Synchrotron Ptychographic X-Ray Computed Tomography (PXCT) [0.03%]
同步加速器ptychographic x射线计算机断层扫描（PXCT）可视化白垩纪硅质地层中的微观化石
Kelsey R Moore,Theodore M Present,Antoine Crémière et al.
Kelsey R Moore et al.
Silicification of microfossils is an important taphonomic process that provides a record of microbial life across a range of environments throughout Earth history. However, questions remain regarding the mechanism(s) by which silica precipi...
Stromatolitic Mounds in Tidal-Facies Sandstones of the Paleoarchean Moodies Group (Barberton Greenstone Belt, Eswatini) [0.03%]
埃斯瓦蒂尼巴伯顿绿岩带古太古代穆迪斯群潮成砂岩中的叠层石丘陵
Sebastian Reimann,Martin Homann,Deon J Janse van Rensburg et al.
Sebastian Reimann et al.
Shallow-marine environments are thought to have been pivotal to the spreading, perhaps even the origin, of early life on Earth. The shallow-marine Archean sedimentary record of early life, however, is biased towards carbonates; nearshore si...
Elevated δ15N Linked to Inhibited Nitrification Coupled to Ammonia Volatilization in Sediments of Shallow Alkaline-Hypersaline Lakes [0.03%]
与浅层碱性盐湖沉积物中硝化抑制和氨挥发相关的高δ15N值
Christopher J Tino,Eva E Stüeken,Daniel D Gregory et al.
Christopher J Tino et al.
Alkaline lakes are among the most bioproductive aquatic ecosystems on Earth. The factors that ultimately limit productivity in these systems can vary, but nitrogen (N) cycling in particular has been shown to be adversely affected by high sa...
Elevated Marine Dissolved Silica Levels Explain a Wide Range of Ediacaran-Cambrian Ediacara-Style Fossil Deposits [0.03%]
增高的海洋溶解二氧化硅含量解释了广泛的埃迪卡拉纪—寒武纪埃迪卡拉风格化石沉积物的原因
Lidya G Tarhan,Ashleigh V S Hood,Mary L Droser
Lidya G Tarhan
The processes responsible for the fossilization of the Ediacara Biota-Earth's earliest fossil record of communities of complex, multicellular organisms-have long been debated. On the basis of both geologic and experimental investigations, r...
Evaluating Serpentinization as a Source of Phosphite to Microbial Communities in Hydrothermal Vents [0.03%]
评估蛇纹岩作为热液喷口微生物群落磷化物来源的重要性
Joanne S Boden,Sanjoy M Som,William J Brazelton et al.
Joanne S Boden et al.
Previous studies have documented the presence of phosphite, a reduced and highly soluble form of phosphorus, in serpentinites, which has led to the hypothesis that serpentinizing hydrothermal vents could have been an important source of bio...
Experimental Mineralisation of a Filamentous Hydrogenotrophic Methanogen in Carbonate, Phosphate, and Silicate [0.03%]
丝状的氢营养甲烷菌在碳酸盐、磷酸盐和硅酸盐中的实验矿物化过程
Sigrid Huld,Sean McMahon,Sebastian Willman et al.
Sigrid Huld et al.
Methanogenic archaea were likely among the earliest organisms to populate the Earth, perhaps contributing to the Archaean greenhouse effect; they are also widely discussed as analogues to any potential life on Mars. However, fossil evidence...
An Anaerobic Microbial Community Mediates Epigenetic Native Sulfur and Carbonate Formation During Replacement of Messinian Gypsum at Monte Palco, Sicily [0.03%]
在西西里蒙特帕尔科替代梅森石膏过程中厌氧微生物群落介导表观遗传天然硫酸盐和碳酸盐的形成
Simon E Rouwendaal,Daniel Birgel,Marcello Natalicchio et al.
Simon E Rouwendaal et al.
The microbially mediated replacement of sulfate-bearing evaporites by authigenic carbonate and native sulfur under anoxic conditions is poorly understood. Sulfur-bearing carbonates from the Monte Palco ridge (Sicily) replacing Messinian gyp...
Microbial Cycling of Sulfur and Other Redox-Sensitive Elements in Porewaters of San Clemente Basin, California, and Cocos Ridge, Costa Rica [0.03%]
加州圣克莱门特盆地和哥斯达黎加科科斯岭孔隙水中的硫及其他氧化还原敏感元素的微生物循环过程研究
Daniela Osorio-Rodriguez,Frank J Pavia,Daniel R Utter et al.
Daniela Osorio-Rodriguez et al.
The microbial recycling of organic matter in marine sediments depends upon electron acceptors that are utilized based on availability and energetic yield. Since sulfate is the most abundant oxidant once oxygen has been depleted, the sulfide...
Untangling the Primary Biotic and Abiotic Controls on Oxygen, Inorganic and Organic Carbon Isotope Signals in Modern Microbialites [0.03%]
解缠现代微生物岩中氧元素和无机、有机碳同位素信号的主要生物和非生物控制因素
Robin Havas,Christophe Thomazo,Jeanne Caumartin et al.
Robin Havas et al.
Microbialites are organo-sedimentary structures formed throughout most of the Earth history, over a wide range of geological contexts, and under a multitude of environmental conditions affecting their composition. The carbon and oxygen isot...
How to Make a Rock in 150 Days: Observations of Biofilms Promoting Rapid Beachrock Formation [0.03%]
海滩岩石快速形成的生物薄膜促进作用观测：150天内制成岩石的技术研究
Brianna M Hibner,Marjorie D Cantine,Elizabeth J Trower et al.
Brianna M Hibner et al.
Beachrock is a type of carbonate-cemented rock that forms via rapid cementation in the intertidal zone. Beachrock is a valuable geological tool as an indicator of paleoshorelines and may protect shorelines from erosion. Previous studies pre...