Journal•ISSN: 0008-4077
Canadian Journal of Earth Sciences
NRC Research Press
About: Canadian Journal of Earth Sciences is an academic journal published by NRC Research Press. The journal publishes majorly in the area(s): Terrane & Archean. It has an ISSN identifier of 0008-4077. Over the lifetime, 7906 publications have been published receiving 227043 citations. The journal is also known as: Revue canadienne des sciences de la terre & Journal canadien des sciences de la terre.
Topics: Terrane, Archean, Volcanic rock, Ordovician, Metamorphism
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TL;DR: In this paper, a system was presented whereby volcanic rocks may be classified chemically as follows: Subalkaline Rocks:A.B. Tholeiitic basalt series:Tholeitic picrite-basalt; tholeiite, tholeitic andesite; dacite; rhyolite.
Abstract: A system is presented whereby volcanic rocks may be classified chemically as follows:I. Subalkaline Rocks:A. Tholeiitic basalt series:Tholeiitic picrite-basalt; tholeiite; tholeiitic andesite.B. Calc-alkali series:High-alumina basalt; andesite; dacite; rhyolite.II. Alkaline Rocks:A. Alkali olivine basalt series:(1) Alkalic picrite–basalt; ankaramite; alkali basalt; hawaiite; mugearite; benmorite; trachyte.(2) Alkalic picrite–basalt; ankaramite; alkali basalt; trachybasalt; tristanite; trachyte.B. Nephelinic, leucitic, and analcitic rocks.III. Peralkaline Rocks:pantellerite, commendite, etc.
6,269 citations
TL;DR: In this paper, maps of the paleography of Iran are presented to summarize and review the geological evolution of the Iranian region since late Precambrian time on the basis of the data presented in this way reconstructions of the region have been prepared that take account of the known major movements of continental masses.
Abstract: Maps of the paleography of Iran are presented to summarize and review the geological evolution of the Iranian region since late Precambrian time On the basis of the data presented in this way reconstructions of the region have been prepared that take account of the known major movements of continental masses These reconstructions, which appear at the beginning of the paper, show some striking features, many of which were poorly appreciated previously in the evolution of the region They include the closing of the 'Hercynian Ocean' by the northward motion of the Central Iranian continental fragment(s), the apparently simultaneous opening of a new ocean ('the High-Zagros Alpine Ocean') south of Iran, and the formation of 'small rift zones of oceanic character' together with the attenuation of continental crust in Central IranWith the disappearance of the Hercynian Ocean, the floor of the High-Zagros Alpine Ocean started to subduct beneath southern Central Iran and apparently disappeared by Late Cretaceou
2,305 citations
TL;DR: In this article, the authors suggest that the thin crust characteristic of the Basin and Range Province extends eastward beneath the west margin of the Colorado Plateau and the Rocky Mountain regions.
Abstract: Geophysical studies suggest that the thin crust characteristic of the Basin and Range Province extends eastward beneath the west margin of the Colorado Plateau and Rocky Mountain regions. In Arizon...
1,439 citations
TL;DR: In this paper, post-depositional concentric deformation produces no significant change in rock volume, and the surface area of a bed and its length in a bed remains constant.
Abstract: Post-depositional concentric deformation produces no significant change in rock volume. Since bed thickness remains constant in concentric deformation, the surface area of a bed and its length in a...
1,049 citations
TL;DR: In rocks deformed by natural orogenic processes, it is usual to find that the finite strain state varies from locality to locality as mentioned in this paper, and in some deformed rocks high strain states are localized within app...
Abstract: In rocks deformed by natural orogenic processes it is usual to find that the finite strain state varies from locality to locality. In some deformed rocks high strain states are localized within app...
1,004 citations