Results 151 to 160 of about 297,462 (204)

Petrology of Metavolcanic Rocks in the Bishop Corners – Donaldson Area, Grenville Province, Ontario

open access: yesCanadian Journal of Earth Sciences, 1973
A calc-alkalic suite, with an apparent thickness of 7 km, varies from alkali basalt and tholeiite composition in the lowest part exposed, through andesite flows and pyroclastic rocks, to rhyodacite pyroclastics at the top. Sixty-two chemical analyses demonstrate a single volcanic cycle.
K. Sethuraman, John M. Moore Jr.
openaire   +2 more sources

Lower Sequence Metavolcanic Rocks

Springer Theses, 2022
Jinghao Fu
exaly   +2 more sources

Upper Sequence Metavolcanic Rocks

Springer Theses, 2022
Jinghao Fu
exaly   +2 more sources

Petrogenesis and tectonic significance of Paleoproterozoic metavolcanic rocks in the Khondalite Belt, North China Craton

Precambrian Research, 2021
Abstract As a typical continent–continent collision belt, the Khondalite Belt (KB) of the North China Craton (NCC) represents a Paleoproterozoic orogenic belt that underwent subduction and collision. Although many high-grade metamorphic rocks have been well studied, the low to medium grade metamorphic rocks well preserved in KB are less studied ...
Xu-Ping Li, Changqing Yin
exaly   +2 more sources

Pontiac metavolcanic rocks within the Cadillac tectonic zone, McWatters, Abitibi Belt, Quebec

open access: yesCanadian Journal of Earth Sciences, 1993
The McWatters metavolcanic rocks are structurally bounded lenses within the Cadillac tectonic zone on the southern boundary of the Abitibi greenstone belt. They comprise komatiite, tholeiitic basalt and gabbro, and calc-alkaline andesitic lavas and volcaniclastic rocks cut by calc-alkaline dioritic and lamprophyric dykes. The McWatters basalts are mid-
David Morin   +3 more
openaire   +2 more sources

Geochemistry of the Yandal belt metavolcanic rocks, Eastern Goldfields Province, Western Australia

Australian Journal of Earth Sciences, 2000
Archaean felsic metavolcanic rocks occur throughout the Yandal belt in the north of the Eastern Goldfields of Western Australia where they are most abundant in the higher parts of the stratigraphy. With the exception of the Spring Well Sequence at the southern end of the belt, these rocks are typically dacites showing geochemical affinities with ...
exaly   +2 more sources

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