Seawater Mg/Ca controls polymorph mineralogy of microbial CaCO3: a potential proxy for calcite-aragonite seas in Precambrian time [0.03%]
海水Mg/Ca控制微生物碳酸盐矿物学的多形性：前寒武纪钙质海洋与方解石质海洋潜在代理指标
J B Ries,M A Anderson,R T Hill
J B Ries
A previously published hydrothermal brine-river water mixing model driven by ocean crust production suggests that the molar Mg/Ca ratio of seawater (mMg/Ca(sw)) has varied significantly (approximately 1.0-5.2) over Precambrian time, resulti...
Growth of synthetic stromatolites and wrinkle structures in the absence of microbes - implications for the early fossil record [0.03%]
无微生物条件下合成层状石灰岩和皱纹结构的生长——对早期化石记录的意义
N McLoughlin,L A Wilson,M D Brasier
N McLoughlin
Stromatolites and wrinkle structures are often taken to be an important indicator for early life. While both may be shaped by microbial mat growth, this can be open to doubt, so that the contribution of abiotic processes in their constructi...