Results 91 to 100 of about 1,706 (214)

Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: The Nordre Strømfjord shear zone and the Arfersiorfik quartz diorite in Arfersiorfik, the Nagssugtoqidian orogen, West Greenland [PDF]

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2006
The Nordre Strømfjord shear zone in the fjord Arfersiorfik, central West Greenland, consists of alternating panels of supracrustal rocks and orthogneisses which together form a vertical zone up to 7 km wide with sinistral transcurrent, ductile ...
Stensgaard, Bo Møller   +3 more
doaj  

Middle Cretaceous silicic metavolcanic rocks in the Kings Canyon area, central Sierra Nevada, California

open access: yes, 1990
Metamorphosed silicic volcanic and hypabyssal rocks of middle Cretaceous (110 to 100 Ma) age occur in two roof pendants in the Kings Canyon area of the central Sierra Nevada. The metavolcanic remnants are similar in age to or are only slightly older than
Nokleberg, Warren J.   +4 more
core  

The structure, stratigraphy and strain history of the Seine Group and related rocks near Mine Centre, Northwestern Ontario [PDF]

open access: yes, 1982
One or possibly two overlapping periods of deformation are responsible for the structures observed in the rocks in the Seine River area. This deformation has resulted in the formation of tight to isoclinal, non-plane approximately cylindrical major F1
Jackson, Paul Anthony
core  

Geochemistry of the felsic metavolcanic rocks of the Wakeham Group: a metamorphosed peralkaline suite from the eastern Grenville Province, Quebec, Canada

open access: yes, 1986
The Wakeham Group is a suite of low-grade (greenschist facies) rocks located in the eastern Grenville Province. In order of volumetric importance, it consists of sandstones, acid volcanics, and gabbro dykes and sills.
James H. Bourne
core   +1 more source

U–Pb zircon ages from the Lynn Lake and Rusty Lake metavolcanic belts, Manitoba: two ages of Proterozoic magmatism

open access: yes, 1987
Two ages of magmatism have been determined from zircon in felsic flows and plutons in the Churchill Province of Manitoba. A rhyolite flow from the Lynn Lake metavolcanic belt has a U–Pb age of [Formula: see text], and a rhyolite flow from the adjacent ...
D. A. Baldwin   +5 more
core   +1 more source

Tectonic significance of mafic volcanic rocks in a Mesozoic sequence of the Menderes Massif, West Turkey

open access: yes, 2002
The Mesozoic platform sequence of the Menderes Massif consists of thick succession of detrital and carbonate rocks. In this sequence there are mafic metavolcanic rocks at two different levels.
Erdogan, B, GÜNGÖR, TALİP
core   +1 more source

Rb–Sr study of metavolcanic rocks from the La Ronge and Flin Flon domains, northern Saskatchewan

open access: yes, 1985
Two whole-rock suites of metavolcanic rocks from separate volcanic belts of the Churchill Province in northern Saskatchewan have been dated by Rb–Sr. Samples from the Amisk Group of the Flin Flon – Snow Lake domain provide an isochron date of 1784 ± 44 ...
R. L. Armstrong, B. R. Watters
core   +1 more source

Geology and petrology of the kösedağ metavolcanic rocks to the south of Tosya

open access: yes, 2020
Kösedağ metavolkanik kayaları, güney Orta Pontidler'de, Tosya'nın güneyinde KD-GB uzanımlı bir kuşak boyunca yüzlek verirler. Birim metasedimanter litolojilerle ardalanan metavolkanik kayalardan oluşur. Kösedağ Metavolkanikleri kuzeyde Kuzey Anadolu Fay'ı ile sınırlanırken, güneyde Dikmen Formasyonu'nun metakarbonatlarını tektonik ...
openaire   +1 more source

Geology and geochronology of the Magdalena-Madera metamorphic core complex lower plate in the sierras Las Jarillas-El Potrero, northern Sonora

open access: yesRevista Mexicana de Ciencias Geológicas
The area of sierras Las Jarillas-El Potrero in northern Sonora is interpreted as a portion of the lower plate of the Magdalena metamorphic core complex. Rock units that characterize this locality range in age from Jurassic to Eocene.
Teresita Sánchez Navarro   +9 more
doaj   +1 more source

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