Results 31 to 40 of about 7,254 (226)

Polymetallic Cu-Bi-(Pb-Zn-Co-Ag) mineralization of the Perin Potok locality near Bor, Serbia [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2013
Complex polymetallic Cu-Bi-(Pb-Zn-Co-Ag) mineralization of the Perin Potok locality occurs as disseminations and fine nests in quartz-ankerite-(sericite) veins. The veins are located in metamorphic rocks of the outer contact zone of the Variscan
Pačevski Aleksandar   +2 more
doaj   +1 more source

Rock alteration at the post-Variscan nonconformity: implications for Carboniferous–Permian surface weathering versus burial diagenesis and paleoclimate evaluation [PDF]

open access: yesSolid Earth, 2021
A nonconformity refers to a hiatal surface located between metamorphic or igneous rocks and overlying sedimentary or volcanic rocks. These surfaces are key features with respect to understanding the relations among climate, lithosphere and tectonic ...
F. Liang   +6 more
doaj   +1 more source

Post-depositional tectonic modifications of VMS deposits in Iberia and its economic significance [PDF]

open access: yes, 2011
The original stratigraphic relationships and structure of VMS deposits are commonly obscured by deformation. This can also affect their economic significance, as shown by several Iberian Pyrite Belt (IPB, SW Iberia) examples.
Castroviejo Bolibar, Ricardo   +2 more
core   +2 more sources

Про авторів [PDF]

open access: yes, 2008
Paleotethys was a highly mobile oceanic realm pinching into the supercontinent Pangea between Gondwana and Eurasia in the late Paleozoic/early Mesozoic.
Chatzaras, V.   +5 more
core   +1 more source

Cambrian magmatism, Variscan high-grade metamorphism and imposed greenschist facies shearing in the Central Sredna Gora basement units (Bulgaria)

open access: yesGeologica Carpathica, 2015
Gneisses from the deep structural levels of the European Variscan Belt are well exposed in the Central Sredna Gora in Bulgaria. In general, migmatites predominate, but unmigmatized domains (or domains with incipient migmatization) are also documented in ...
Lazarova Anna   +3 more
doaj   +1 more source

Variscan sourcing of Westphalian (Pennsylvanian) sandstones in the Canobie Coalfield, UK [PDF]

open access: yes, 2010
The zircon age spectrum in a sample from the Canonbie Bridge Sandstone Formation (Asturian) of southern Scotland contains two main peaks. One is Early Carboniferous in age (348– 318 Ma), and corresponds to the age of igneous activity during the ...
ANDREW MORTON   +21 more
core   +1 more source

Analysis of the Importance of Extension in Accounting for the Post-Carboniferous Subsidence of the North Sea Basin [PDF]

open access: yes, 1986
Post Carboniferous sedimentary deposition in the Central North Sea basins can be separated into three major periods: Permian, Triassic and mid-Jurassic through present.
Hellinger, Steven J.   +2 more
core   +1 more source

Mechanics of thick-skinned Variscan overprinting of Cadomian basement (Iberian Variscides)

open access: yesComptes Rendus. Géoscience, 2009
Remnants of the Cadomian basement can be found in the Iberian Variscides (IBVA) in several key sectors of its autochthonous units (composed of Neoproterozoic to Lower Palaeozoic metasedimentary sequences) and within the Continental Allochthonous Terrane (CAT).
António Ribeiro   +10 more
openaire   +1 more source

Metasedimentary Metatexites with Trondhjemitic Leucosomes from NE Sicily: Another Example of Prograde Water-fluxed Melting in Collisional Belts

open access: yesGeosciences, 2020
Trondhjemitic leucosomes, hosted in late Variscan metasedimentary migmatites from the upper amphibolite-facies basement of the north-eastern Peloritani Mountains (southern Italy), have petrographic and geochemical features consistent with their origin as
Patrizia Fiannacca, Rosolino Cirrincione
doaj   +1 more source

Home - About - Disclaimer - Privacy