Author: Marion Eugene BickfordPublisher: Geological Society of America
ISBN: 0813721652
Category : Science
Languages : en
Pages : 55
Book Description
Geochronology of Precambrian Rocks in the St. Francois Mountains, Southeastern Missouri
Author: Marion Eugene BickfordPublisher: Geological Society of America
ISBN: 0813721652
Category : Science
Languages : en
Pages : 55
Book Description
Geochronology of Precambrian Rocks in the St François Mountains, Southeastern Missouri
Author: Marion Eugene BickfordPublisher:
ISBN:
Category :
Languages : en
Pages : 48
Book Description
Orientation Study of St. Francois Mountain and Decaturville Precambrian Areas, Missouri
Author: Kenneth F. SteelePublisher:
ISBN:
Category : Geochemical prospecting
Languages : en
Pages : 76
Book Description
Precambrian: Conterminous U.S.
Author: John C. Reed, Jr.Publisher: Geological Society of America
ISBN: 081375447X
Category : Science
Languages : en
Pages : 752
Book Description
This wide-ranging discussion of Precambrian rocks includes contributions from a diverse array of authors actively engaged in investigations of various aspects of U.S. Precambrian geology. Summary discussions by the editors of the five major chapters place these contributions in a logical regional framework.
Geological Evolution of the Earth During the Precambrian
Author: L.J. SalopPublisher: Springer Science & Business Media
ISBN: 3642686842
Category : Science
Languages : en
Pages : 471
Book Description
Progress in Precambrian geology has been exceptionally great, indeed quite striking for geologists of the older generation; only some 30-40 years ago the Precambrian appeared as an uncertain and even mystic prelude to geologic evolution. Even the very name - Precambrian - means some indi visible unit in the early history of the Earth, the beginning of which is poorly known. At the same time it was obvious that the Precambrian formations are of extremely varied and complex composition and poor knowledge and lack of reliable methods of division and correlation were to blame for the lack of significant progress in studies of this early evolutionary stage of the planet. Certainly, even at the very start of Precambrian studies, the results obtained were quite promising, lifting as they did the mysterious veil over the regional Precambrian; but they presented no general realistic picture of this early stage in the Earth's evolution at that time. Recently, this situation has completely changed, due to new methods of study of the older forma tions, and due also to the refinement of some well-known methods, in particular of division, dating, and correlation of "silent" metamorphic strata. Application of different isotope methods of dating was most impor tant in providing objective rock age and thereby the age of geologic events recorded in these rocks. Thus it became possible to reconstruct the oldest geologic period of our planet.
U.S. Geological Survey Bulletin
Author: Proterozoic Geology of the Southern Rocky Mountains
Author: Jeffrey A. GramblingPublisher: Geological Society of America
ISBN: 0813722357
Category : Science
Languages : en
Pages : 184
Book Description
Precambrian Plate Tectonics
Author: A. KrönerPublisher: Elsevier
ISBN: 0080869033
Category : Science
Languages : en
Pages : 805
Book Description
Precambrian Plate Tectonics
The Midcontinent of the United States--permissive Terrane for an Olympic-Dam Type Deposit
Author: Midcontinent Strategic and Critical Minerals Project (U.S.). WorkshopPublisher:
ISBN:
Category : Ore deposits
Languages : en
Pages : 92
Book Description
Midcontinent strategic and critical minerals project 1988 workshop report.
U.S. Geological Survey Bulletin
Author: E. Neal HinrichsPublisher:
ISBN:
Category : Coal
Languages : en
Pages : 246
Book Description
Modal, chemical, and isotopic data for the granitic rocks of the Tuolumne Meadows quadrangle.