Controls on authigenic mineralization in experimental Ediacara-style preservation [0.03%]
实验研究埃迪卡拉型保存中自生矿物生成的控制因素
Silvina Slagter,Kurt O Konhauser,Derek E G Briggs et al.
Silvina Slagter et al.
The earliest evidence of complex macroscopic life on Earth is preserved in Ediacaran-aged siliciclastic deposits as three-dimensional casts and molds, known as Ediacara-style preservation. The mechanisms that led to this extraordinary prese...
Lateral redox variability in ca. 1.9 Ga marine environments indicated by organic carbon and nitrogen isotope compositions [0.03%]
约1.9Ga海洋环境横向氧化还原变化的有机碳、氮同位素组成指示
Kento Motomura,Andrey Bekker,Minoru Ikehara et al.
Kento Motomura et al.
The stepwise oxygenation of Earth's surficial environment is thought to have shaped the evolutionary history of life. Microfossil records and molecular clocks suggest eukaryotes appeared during the Paleoproterozoic, perhaps shortly after th...
Dynamics of the osmotic lysis of mineral protocells and its avoidance at the origins of life [0.03%]
原细胞渗透溶菌动力学及其在生命起源时的避免机制研究
Yang Ding,Silvana S S Cardoso,Julyan H E Cartwright
Yang Ding
The osmotic rupture of a cell, its osmotic lysis or cytolysis, is a phenomenon that active biological cell volume regulation mechanisms have evolved in the cell membrane to avoid. How then, at the origin of life, did the first protocells su...
Pyritic stromatolites from the Paleoarchean Dresser Formation, Pilbara Craton: Resolving biogenicity and hydrothermally influenced ecosystem dynamics [0.03%]
皮拉巴克拉通古太古代德雷瑟组的含硫叠层石：揭示生物成因及热液影响生态系统的动态过程
Raphael J Baumgartner,Martin J Van Kranendonk,Stefano Caruso et al.
Raphael J Baumgartner et al.
This study investigates the paleobiological significance of pyritic stromatolites from the 3.48 billion-year-old Dresser Formation, Pilbara Craton. By combining paleoenvironmental analyses with observations from well-preserved stromatolites...
Yosuke Hoshino,Eric A Gaucher
Yosuke Hoshino
Steroids are indispensable components of the eukaryotic cellular membrane and the acquisition of steroid biosynthesis was a key factor that enabled the evolution of eukaryotes. The polycyclic carbon structures of steroids can be preserved i...
Primary to post-depositional microbial controls on the stable and clumped isotope record of shoreline sediments at Fayetteville Green Lake [0.03%]
费耶特维尔格林湖岸边沉积物的稳定和聚集同位素记录的主要到后沉积微生物控制
Hanna C Leapaldt,Carie M Frantz,Juliana Olsen-Valdez et al.
Hanna C Leapaldt et al.
Lacustrine carbonates are a powerful archive of paleoenvironmental information but are susceptible to post-depositional alteration. Microbial metabolisms can drive such alteration by changing carbonate saturation in situ, thereby driving di...
Carbonate chimneys at the highly productive point Dume methane seep: Fine-scale mineralogical, geochemical, and microbiological heterogeneity reflects dynamic and long-lived methane-metabolizing habitats [0.03%]
杜姆点产甲烷渗漏的碳酸盐烟囱：细尺度的矿物学、地球化学和微生物异质性反映了动态且长期存在的产甲烷代谢生境
Peter Schroedl,Michael Silverstein,Daisy DiGregorio et al.
Peter Schroedl et al.
Methane is a potent greenhouse gas that enters the marine system in large quantities at seafloor methane seeps. At a newly discovered seep site off the coast of Point Dume, CA, ~ meter-scale carbonate chimneys host microbial communities tha...
A 1 Ma sedimentary ancient DNA (sedaDNA) record of catchment vegetation changes and the developmental history of tropical Lake Towuti (Sulawesi, Indonesia) [0.03%]
印度尼西亚苏拉威西岛热带 Towuti 湖 1Ma 古老沉积古 DNA（sedaDNA）记录及其流域植被变化和湖盆发育历史
Md Akhtar-E Ekram,Matthew Campbell,Sureyya H Kose et al.
Md Akhtar-E Ekram et al.
Studying past ecosystems from ancient environmental DNA preserved in lake sediments (sedaDNA) is a rapidly expanding field. This research has mainly involved Holocene sediments from lakes in cool climates, with little known about the suitab...
Energy flux couples sulfur isotope fractionation to proteomic and metabolite profiles in Desulfovibrio vulgaris [0.03%]
硫酸盐还原菌Desulfovibrio vulgaris中能量通量耦合硫同位素分馏与蛋白质和代谢物特征的关系
William D Leavitt,Jacob Waldbauer,Sofia S Venceslau et al.
William D Leavitt et al.
Microbial sulfate reduction is central to the global carbon cycle and the redox evolution of Earth's surface. Tracking the activity of sulfate reducing microorganisms over space and time relies on a nuanced understanding of stable sulfur is...
Interpreting an Archaean paleoenvironment through 3D imagery of microbialites [0.03%]
通过微生物岩的三维图像解读太古宙古环境
Cecilia M Howard,Nathan D Sheldon,Selena Y Smith et al.
Cecilia M Howard et al.
While stromatolites, and to a lesser extent thrombolites, have been extensively studied in order to unravel Precambrian (>539 Ma) biological evolution, studies of clastic-dominated microbially induced sedimentary structures (MISS) are relat...