Results 111 to 120 of about 5,596 (229)

Baseline geochemistry of Devonian low-grade metasedimentary rocks in Cornwall: preliminary data and environmental significance

, 2003
Geochemical baseline data provide information on the state of the environment before modification by mining and other anthropogenic activities. A summary of the analyses of 41 elements on 100 samples from Devonian metasedimentary rocks away from areas of
P.W. Scott (21814889), RK Shail (21814886), K.S. Reid (21814907), R.C. Scrivener (21814910)   +3 more
core  

Geochemistry and provenance of metasedimentary rocks from the Archean Golden Pond sequence (Casa Berardi mining district, Abitibi subprovince)

, 1996
The Archean Golden Pond sequence is made up of deformed and metamorphosed conglomerates, greywackes, and mafic volcanic rocks, and is overlain by ferrugineous metasedimentary rocks of the North iron formation.
M. R. Flèche, G. Camiré
core   +1 more source

Mineralogy, geochemistry and conditions of formation Permian-Triassic intraplate granitoids of Sinyushenskiy Massif (Gorny Altai)

Литосфера, 2016
The data on geological settings, ages, special features of mineralogy and composition of Sinyushensky Massif granitoids the in north-west part of the Gorny Altay region.
N. N. Kruk, O. A. Gavrushkina, C. G. Shokalskiy, A. V. Travin   +3 more
doaj   +2 more sources

Petrogenesis and Provenance of the Triassic Metasedimentary Succession in the Sakar Unit, Bulgaria: Constraints from Petrology, Geochemistry, and U-Pb Detrital Geochronology

Geosciences
This study investigates the metasedimentary sequences of terrigenous–carbonate Sakar-type Triassic (TCSTT) and Sakar-type Triassic (STT) in the Sakar Unit, southeastern Bulgaria.
Tzvetomila Filipova Vladinova, Milena Georgieva Georgieva   +1 more
doaj   +1 more source

Structure and magnetic fabric of the Quetico metasedimentary rocks in the Calm Lake - Perch Lake area, near Atikokan, Northwestern Ontario [PDF]

, 1987
The Quetico metasedimentary rocks are the metamorphosed equivalents of a turbidite sequence, comprised of a repetative interstratification of sandstones and mudstones.
Sarvas, Perry
core  

Petrogenesis of ultramafic and mafic rock series from the North Pyrenean Castillon massif (Ariège, France): evidence of magma–crust interactions in the Ordovician?

Frontiers in Earth Science
The Castillon massif, in the northern Pyrenees, features a complex of decimetric to metric ultramafic and mafic layers emplaced within metasedimentary series (from the bottom to the top: garnet, sillimanite, and kyanite-bearing gneisses and sillimanite +
Mohammad A. Kilzi, Michel Grégoire, Youssef Driouch, Mathieu Benoit, Pierre Debat, L. Paul Bédard   +5 more
doaj   +1 more source

Geology of metasedimentary rocks and Late Cretaceous deformation history in the northern Valhalla complex, British Columbia

, 1998
The Valhalla complex, a Cordilleran metamorphic core complex, is a domal culmination made up of gently dipping interlayered sheets of igneous and supracrustal rocks that were deformed and metamorphosed in the Middle Jurassic and Late Cretaceous, and ...
Peter M Schaubs, Sharon D Carr
core   +1 more source

Fluid-induced alteration of metasedimentary rocks in the Scottish Highlands

, 2017
Fluids, mainly H2O and CO2, are released from H- and C-bearing phases during prograde metamorphism. Because of the buoyancy of these fluids, they rise within the crust towards the surface of the Earth. Metamorphic fluids take advantage of permeable horizons, shear zones, fold hinges, fractures, and are channelled into high-flux zones.
openaire   +1 more source

Detrital zircon age structure within ca. 3 Ga metasedimentary rocks, Yilgarn Craton : elucidation of Hadean source terranes by principal component analysis

, 2012
A multivariate approach using a similarity matrix derived from >5500 U-Pb zircon analyses was used to investigate the complex and overlapping detrital zircon age structure within ca.
Nelson, David R. (R17274), Thern, Eric R., David R. Nelson, Eric R. Thern   +3 more
core   +1 more source

A Petrographic and Structural Analysis of Metasedimentary Rocks on the Boundary of the Piedmont and Blue Ridge Provinces, Central Virginia

, 2015
The Howardsville 7.5’ quadrangle is located on the boundary between Proterozoic Blue Ridge rocks and early Paleozoic Piedmont rocks in central Virginia.
Spears, Anna
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