Results 31 to 40 of about 1,741 (196)

Rifting and arc-related early Paleozoic volcanism along the North Gondwana margin: geochemical and geological evidence from Sardinia (Italy) [PDF]

, 2012
Three series of volcanic rocks accumulated during the Cambrian to Silurian in the metasediment-dominated Variscan basement of Sardinia. They provide a record of the changing geodynamic setting of the North Gondwana margin between Upper Cambrian and ...
BUZZI L, FUNEDDA A., GAGGERO L, OGGIANO G   +3 more
core   +1 more source

Geochemistry and paleotectonomagmatic setting of metabasites protolith from Asalem metamorphic complex (northwest Rasht) [PDF]

پترولوژی, 2016
Asalem metamorphic complex consists mostly of metabasite, metapelite and serpentinite. Metabasites display metamorphic features of greenschist and blueschist facies.
Mohsen Nasrabady, mohammad saadat
doaj  

Neoproterozoic subduction along the Ailaoshan zone, South China : geochronological and geochemical evidence from amphibolite [PDF]

, 2014
This study was supported by China Natural Science Foundation (41190073 and 41372198), National Basic Research Program of China (2014CB440901) and Natural Environment Research Council (grant NE/J021822/1).Lenses of amphibolites occur along the Ailaoshan ...
Cai, Yongfeng, Cawood, Peter A., Fan, Weiming, Liu, Huichuan, Wang, Yuejun, Xing, Xiaowan, Zhang, Yuzhi   +6 more
core   +1 more source

Tracking Dehydration Reactions and Fossil Fluid Flux in Shear Zones Using Garnet Microstructures

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Shear zones act as preferential fluid pathways during prograde and retrograde stages of metamorphism. Nonetheless, we still have limited knowledge of the drainage and permeability of natural settings. The preserved signature of fluid in exhumed rocks provides insights into fluid flow during burial and exhumation.
Alessandro Petroccia, Francesco Giuntoli, Alissa Kotowski, Gianmarco Buono, Alireza Chogani, Eric Hellebrand, Lucia Pappalardo, Ivan Callegari   +7 more
wiley   +1 more source

The metabasites from the Texel Unit (Austroalpine nappe stack): markers of Cretaceous intracontinental subduction and subsequent collision

Austrian Journal of Earth Sciences, 2023
Abstract Eclogites in the Texel Unit (Austroalpine nappe stack; Eastern Alps, South Tyrol, Italy) represent the westernmost out-crops of the E-W striking Eoalpine High-Pressure Belt (EHB). East of the Tauern Window, the EHB forms part of a Cretaceous intracontinental south-dipping subduction/collision zone.
Tropper, Peter, Tribus, Martina, Pomella, Hannah, Habler, Gerlinde   +3 more
openaire   +2 more sources

The building stones and slates of Killin : an investigation of stone for the built heritage [PDF]

, 2010
The village of Killin lies in an area of dramatic landscape and mountain scenery. The use of local stone in the buildings gives a direct connection to this landscape and reflects the local geology, comprising mostly metamorphic rocks of Precambrian age
Albornoz-Parra, L.J., Custance-Baker, A.B., Everett, P., Hyslop, E.K., Parry, S.F., Tracey, E.A.   +5 more
core  

Miocene metabasites of the hanaoka area, northern akita prefecture.

JOURNAL OF MINERALOGY, PETROLOGY AND ECONOMIC GEOLOGY, 1990
In the Hanaoka mining area of the “Green Tuff” region, the Miocene submarine lavas and pyroclastic rocks with basaltic to andesitic compositions were recrystallized at low temperatures to form various secondary minerals. The upper metabasites are characterized by the mineral assemblage of prehnite-pumpellyite facies; i.e.
Tatuhiro Tanokura, Hitoshi Onuki
openaire   +2 more sources

Geology of the Region around Botnneset, East Antarctica (Earth Sciences) [PDF]

, 1975
Geological observations of the Botnneset region, and mineral and chemical compositions of the rock samples collected from the region are presented in this article. The structural and metamorphic history of the region is summarized as follows.
Masaru YOSHIDA
core   +1 more source

U-Pb SHRIMP zircon dating of Grenvillian metamorphism in Western Sierras Pampeanas (Argentina) : correlation with the Arequipa-Antofalla craton and constraints on the extent of the Precordillera Terrane [PDF]

, 2006
The Sierras Pampeanas of Argentina, the largest outcrop of pre-Andean crystalline basement in southern South America, resulted from plate interactions along the proto-Andean margin of Gondwana, from as early as Mesoproterozoic to Late Paleozoic times (e ...
C. Mark Fanning, Carlos W. Rapela, Carmen Galindo, Casquet, Casquet, Cesar Casquet, Corrievau, Damm, Edgardo Baldo, Galindo, Jose M. González-Casado, Juan A. Dahlquist, Kretz, Loewy, Martignole, McDonough, Pankhurst, Porcher, Powell, Ramos, Ramos, Ramos, Rapela, Rapela, Rivers, Robert J. Pankhurst, Thomas, Tosdal, Varela, Vavra, Vujovich, Wasteneys   +31 more
core   +4 more sources

Block‐in‐Matrix Deformation and Veining in Alpine Subducted Oceanic Metasediments at Blueschist Facies Conditions

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract In subduction zones, the locked seismogenic zone is bordered by an upper and a lower transition zone. In these transition zones, deformation is primarily accommodated by an interplay of diffuse viscous deformation within a weak matrix and brittle deformation in stiffer bands and blocks.
L. Casoli, A. Petroccia, F. Giuntoli
wiley   +1 more source