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Miogeocline : ウィキペディア英語版
Miogeocline
A miogeocline is an area of sedimentation which occurs along the passive margin of a continent. The deposits occur as typically shallow water clastic sediments which thicken seaward to form a clastic wedge parallel to a tectonically quiescent coast. Modern examples include the continental shelf of the northern Gulf of Mexico and the Atlantic coast of North and South America.
The term was coined in 1966 by Dietz and Holden from the ''miogeosyncline'' concept of the outdated geosynclinal theory. Dietz and Holden modified the term to miogeocline as the sedimentary deposits described were not synclinal in form.〔Dietz, Robert S. and John C. Holden, 1966, ''Miogeoclines (Miogeosynclines) in Space and Time,'' Journal of Geology, Vol. 74, No. 5, Part 1 (Sep., 1966), pp. 566-583〕〔
Ancient miogeoclines such as the Neoproterozoic to Cambrian Cordilleran miogeocline of the southwestern U. S.,〔Stewart, J. H. and F. G. Poole, ''Lower Paleozoic and Uppermost Precambrian Cordilleran Miogeocline, Great Basin, Western United States,'' Tectonics and Sedimentation, Vol. 22, 1974, P.28-57 〕〔Baldridge, W. Scott, ''Geology of the American Southwest,'' Cambridge University Press, 2004, pp. 76 - 90 ISBN 978-0-521-01666-7〕 the Paleozoic Appalachian miogeocline, the Precambrian Belt Supergroup of Montana and Idaho and the Huronian sediments of Canada which were involved in the Grenville Orogeny.〔 The Devonian to Mississippian northern Cordilleran miogeocline of northern Yukon and Northwest Territories of Canada represents an area of current research in Arctic geology.〔Beranek, Luke P., et al., ''Detrital zircon geochronology of the western Ellesmerian clastic wedge, northwestern Canada: Insights on Arctic tectonics and the evolution of the northern Cordilleran miogeocline,'' Geological Society of America Bulletin, Published online September 2, 2010; 〕 The ancient miogeoclinal sediments become attached to or accreted onto the adjacent continent following later continental collisions or orogenies. Thus the sediments of the Appalachian miogeocline became part of the Appalachian Mountains during the Appalachian orogeny.
==References==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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