搜索结果: 1-8 共查到“地质学 Precambrian”相关记录8条 . 查询时间(0.076 秒)
中国地质大学科学技术发展院陈中强* 等 BGEG国家重点实验室. Earth-Science Reviews (2019), Biosedimentological features of major microbe-metazoan transitions (MMTs) from Precambrian to Cenozoic
地史时期；生物沉积；后生生物；微生物；过渡期
2021/10/20
近日，中国地质大学生物地质与环境地质国家重点实验室陈中强教授团队题为《从前寒武纪到新生代主要的微生物-后生动物过渡期的生物沉积特征》（Biosedimentological features of major microbe-metazoan transitions (MMTs) from Precambrian to Cenozoic）的学术论文在地学《Earth-Science Reviews...
Multiple Dolomitization and Fluid Flow Events in the Precambrian Dengying Formation of Sichuan Basin, Southwestern China
Precambrian dolomite geological fluid flow meteoric water hydrothermal activity Sichuan Basin
2018/4/10
The Precambrian Dengying Formation is a set of large-scale, extensively dolomitized, carbonate reservoirs occurring within the Sichuan Basin. Petrographic and geochemical studies reveal dolomitization...
Life in the Precambrian may have been much livelier than previously thought
Life in the Precambrian previously thought
2017/7/20
The Garden of the Ediacaran was a period in the ancient past when Earth’s shallow seas were populated with a bewildering variety of enigmatic, soft-bodied creatures. Scientists have pictured it as a t...
Multiple Episodes of Clay Alteration at the Precambrian/Paleozoic Unconformity, Appalachian Basin: Isotopic Evidence for Long-Distance and Local Fluid Migrations
Alteration Brines Chlorite Illite Isotopes Meteoric Water Precambrian Unconformity Ontario
2011/12/6
Abstract: Chlorite and illite are commonly associated with ubiquitous secondary K-rich feldspar in the rocks located immediately above and below the Precambrian-Paleozoic unconformity in southwestern ...
“Retrograde Diagenesis” of Clay Minerals in the Precambrian Freda Sandstone, Wisconsin
Analytical Electron Microscopy Chlorite Freda Formation Illite I-S Muscovite Retrograde Diagenesis Scanning Electron Microscopy Smectite Transmission Electron Microscopy
2011/12/6
Abstract: Siltstones from the Precambrian Freda Formation in Wisconsin have been studied by scanning, scanning-transmission and analytical electron microscopy (SEM, STEM and AEM), and X-ray diffractio...
Hematite and Goethite from Duricrusts Developed by Lateritic Chemical Weathering of Precambrian Banded Iron Formations, Minas Gerais, Brazil
Hematite Goethite Laterite Mossbauer Spectrometry
2011/12/1
Abstract: The upper 15–20 m of a 200 m thick lateritic weathering profile on Precambrian itabirites of Capanema, Brazil, reveals a genetic pathway for the formation of hematitic and goethitic nodules ...
Preservation of Clay Minerals in the Precambrian (1.1 Ga) Nonesuch Formation in the Vicinity of the White Pine Copper Mine, Michigan
Chlorite Diagenesis Illite Mixed-layer illite/smectite Nonesuch Formation White mica
2011/12/28
The Middle Proterozoic (1.1 Ga) Nonesuch Formation, host of the stratiform copper deposit at White Pine, Michigan, consists of 200 m of principally dark grey clastic sediments which contain detritus o...
Scanning Electron Microscopy of Quartz in Precambrian Cherts and Dolomites from Southern Africa
Chert Crystallization Dolomite Morphology Metamorphism Quartz
2012/2/10
Scanning electron microscopic (SEM) examination of the quartz isolated from chert of Transvaal and Swaziland, of 2000 and 3400 million year (MY) ages, respectively, in southern Africa revealed marked ...