Deposition of >3.7 Ga clay-rich strata of the Mawrth Vallis Group, Mars, in lacustrine, alluvial, and aeolian environments [0.03%]
火星Mawrth Vallis群大于37亿年的富粘土层在湖泊、冲积和风成环境中的沉积
Donald R Lowe,Janice L Bishop,Damien Loizeau et al.
Donald R Lowe et al.
The presence of abundant phyllosilicate minerals in Noachian (>3.7 Ga) rocks on Mars has been taken as evidence that liquid water was stable at or near the surface early in martian history. This study investigates some of these clay-rich st...
Geochemical and isotopic evidence for paleoredox conditions during deposition of the Devonian-Mississippian New Albany Shale, southern Indiana [0.03%]
印第安纳南部泥盆纪-石炭纪纽约尔湾页岩沉积期古氧化还原条件的地球化学和同位素证据
J A Beier,J M Hayes
J A Beier
The upper part of the New Albany Shale is divided into three members. In ascending order, these are (1) the Morgan Trail Member, a laminated brownish-black shale; (2) the Camp Run Member, an interbedded brownish-black and greenish-gray shal...
Integrated chemostratigraphy and biostratigraphy of the Windermere Supergroup, northwestern Canada: implications for Neoproterozoic correlations and the early evolution of animals [0.03%]
加拿大西北部温德米尔超群的整合化学地层学和生物地层学：对泛古陆沉积岩系对比及后生动物早期演化的启示
G M Narbonne,A J Kaufman,A H Knoll
G M Narbonne
The thick, richly fossiliferous succession of the upper Windermere Supergroup, Mackenzie Mountains, northwestern Canada, provides a test of integrated biostratigraphic and chemostratigraphic frameworks in terminal Proterozoic correlation. T...
Stromatolites of the Mescal Limestone (Apache Group, middle Proterozoic, central Arizona): taxonomy, biostratigraphy, and paleoenvironments [0.03%]
亚利桑那中部Mescal石灰岩（阿帕奇群，中元古代）层纹状叠层石的分类、生物地层和古环境研究
J Bertrand-Sarfati,S M Awramik
J Bertrand-Sarfati
The 25- to 30-m-thick Algal Member of the Mescal Limestone (middle Proterozoic Apache Group) contains two distinct stromatolitic units: at the base, a 2- to 3-m-thick unit composed of columnar stromatolites and above, a thicker unit of stra...