The deposition and significance of an Ediacaran non-glacial iron formation [0.03%]
埃迪卡拉纪铁形成矿物质沉积及其意义
Xiuqing Yang,Jingwen Mao,Rongxi Li et al.
Xiuqing Yang et al.
Most Neoproterozoic iron formations (NIF) are closely associated with global or near-global "Snowball Earth" glaciations. Increasingly, however, studies indicate that some NIFs show no robust evidence of glacial association. Many aspects of...
Geospatial insights into the controls of microbialite formation at Laguna Negra, Argentina [0.03%]
阿根廷拉古纳内格拉微生物岩形成控制的地理空间洞察
Scott R Beeler,Fernando J Gomez,Alexander S Bradley
Scott R Beeler
Microbialites provide a record of the interaction of microorganisms with their environment constituting a record of microbial life and environments through geologic time. Our capacity to interpret this record is limited by an incomplete und...
Mesoproterozoic surface oxygenation accompanied major sedimentary manganese deposition at 1.4 and 1.1 Ga [0.03%]
中元古代大气和地表水富氧事件与锰沉积的关系：来自两类锰矿床定年的证据
Sam C Spinks,Erik A Sperling,Robert L Thorne et al.
Sam C Spinks et al.
Manganese (Mn) oxidation in marine environments requires oxygen (O2 ) or other reactive oxygen species in the water column, and widespread Mn oxide deposition in ancient sedimentary rocks has long been used as a proxy for oxidation. The oxy...
Oxygen and carbon isotope variations in Chamelea gallina shells: Environmental influences and vital effects [0.03%]
Chamela gallina 标本的氧、碳同位素变化：环境影响和生物活性效应
Arianna Mancuso,Ruth Yam,Fiorella Prada et al.
Arianna Mancuso et al.
Stable isotopes in mollusc shells, together with variable growth rates and other geochemical properties, can register different environmental clues, including seawater temperature, salinity and primary productivity. However, the strict biol...
Production of diverse brGDGTs by Acidobacterium Solibacter usitatus in response to temperature, pH, and O2 provides a culturing perspective on brGDGT proxies and biosynthesis [0.03%]
聚氧环脂肪二醇的多样性生物合成及其对温度、pH和氧气的响应为brGDGT示踪剂和生物合成提供了新的视角
Toby A Halamka,Jonathan H Raberg,Jamie M McFarlin et al.
Toby A Halamka et al.
Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial membrane lipids that are frequently employed as paleoenvironmental proxies because of the strong empirical correlations between their relative abundances and environment...
Exploring the secondary mineral products generated by microbial iron respiration in Archean ocean simulations [0.03%]
探究古海洋模拟中微生物铁呼吸产生的次生矿物产物
Christine Nims,Jena E Johnson
Christine Nims
Marine chemical sedimentary deposits known as Banded Iron Formations (BIFs) archive Archean ocean chemistry and, potentially, signs of ancient microbial life. BIFs contain a diversity of iron- and silica-rich minerals in disequilibrium, and...
Physiological and metabolic responses of chemolithoautotrophic [Formula: see text] reducers to high hydrostatic pressure [0.03%]
自养化学无机营养硫还原菌对高静水压的生理和代谢响应
Ileana Pérez-Rodríguez,Stefan M Sievert,Marilyn L Fogel et al.
Ileana Pérez-Rodríguez et al.
We investigated the impact of pressure on thermophilic, chemolithoautotrophic NO 3 - reducing bacteria of the phyla Campylobacterota and Aquificota isolated from deep-sea hydrothermal vents. Batch incubations at 5 and 20 MPa resulted i...
Branching archaeocyaths as ecosystem engineers during the Cambrian radiation [0.03%]
分支古杯动物门物种作为生态系统工程师在寒武纪爆发期间的作用
Ryan A Manzuk,Adam C Maloof,Jaap A Kaandorp et al.
Ryan A Manzuk et al.
The rapid origination and diversification of major animal body plans during the early Cambrian coincide with the rise of Earth's first animal-built framework reefs. Given the importance of scleractinian coral reefs as ecological facilitator...
Endospores associated with deep seabed geofluid features in the eastern Gulf of Mexico [0.03%]
墨西哥湾东部深海海底地质流体特征相关的内孢子
Jayne E Rattray,Anirban Chakraborty,Gretta Elizondo et al.
Jayne E Rattray et al.
Recent studies have reported up to 1.9 × 1029 bacterial endospores in the upper kilometre of deep subseafloor marine sediments, however, little is understood about their origin and dispersal. In cold ocean environments, the presence of the...
Nitrogen-based symbioses, phosphorus availability, and accounting for a modern world more productive than the Paleozoic [0.03%]
基于氮的共生、磷的可用性以及一个比古生代更高效的世界中的会计问题
C Kevin Boyce,Daniel E Ibarra,Matthew P Nelsen et al.
C Kevin Boyce et al.
Evolution of high-productivity angiosperms has been regarded as a driver of Mesozoic ecosystem restructuring. However, terrestrial productivity is limited by availability of rock-derived nutrients such as phosphorus for which permanent incr...