منابع مشابه
Chapter 4: Sequence Stratigraphy of the Cherokee Group
Sequence stratigraphy is the study of genetically related facies within a framework of chronostratigraphically significant surfaces, where the depositional sequence is considered to be the fundamental unit for sequence-stratigraphic analysis (Van Wagoner et al., 1990). The depositional sequence is defined as a genetically related succession of strata bounded by unconformable surfaces and their ...
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The Anthropocene, an informal term used to signal the impact of collective human activity on biological, physical and chemical processes on the Earth system, is assessed using stratigraphic criteria. It is complex in time, space and process, and may be considered in terms of the scale, relative timing, duration and novelty of its various phenomena. The lithostratigraphic signal includes both di...
متن کاملThrusting, folding and stratigraphy of the Ghaap Group along the southwestern margin of the Kaapvaal Craton
P.G. Eriksson, D. Twist, C.P. Snyman and L. Burger 454 The setting of mineralization in a portion of the Eersteling goldfield, Pietersburg granite-greenstone terrane, South Africa C.L. Byron and J.M. Barton 463 Siesmicity and plate boundary evolution in southeastern Africa CJ.HHartnady 473 Geology, geochemistry and mineralisation of the Erongo Volcanic Complex, Namibia F. Pirajno 485 Clay miner...
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cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
Stratigraphy and Depositional Environment of the Mesaverde Group in the Northern Bighorn Basin of Wyoming
A sedimentological, stratigraphical and palynological study was conducted on the upper Cretaceous (Campanian) Mesaverde Group over 27.5 km of a north-south-orientated outcrop belt in the northern Bighorn Basin, Wyoming. During the Campanian, the study area lay in the western part of the Cretaceous Western Interior Seaway. The study aims to provide a stratigraphic and paleoenvironmental analysis...
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ژورنال
عنوان ژورنال: Atlantic Geology
سال: 1975
ISSN: 1718-7885
DOI: 10.4138/1826