Results 51 to 60 of about 15,451 (231)

Ceramic Production and Geodiversity in Iron Age Iberia: An Archaeometric Study of Pottery from Castrejón de Capote (SW Spain)

Archaeometry, EarlyView.
ABSTRACT The hillfort of Castrejón de Capote is one of the best investigated settlements of Late Iron Age southwest Iberia. Located in the territory that the classical sources attributed to the Celtici, it was occupied between the early 4th and the 1st centuries bce.
Beatrijs de Groot, Luis Berrocal‐Rangel, Manuel Fernández‐Götz   +2 more
wiley   +1 more source

GEOLOGY AND GEOCHEMISTRY OF SYNPLUTONIC DYKES IN THE CHELYABINSK GRANITOID MASSIF, SOUTH URALS

Геодинамика и тектонофизика, 2017
We present the results of geological, petro‐geochemical and mineralogical studies of synplutonic intrusive formations in the Chelyabinsk granitoid massif, South Urals.
G. A. Kallistov, T. A. Osipova
doaj   +1 more source

U-Pb dating of arc to post-collisional magmatic events in northwestern Anatolia: The Eocene Granitoids in NW Anatolia revisited

Journal of Asian Earth Sciences: X, 2023
Northwestern Anatolia contains voluminous Cenozoic magmatic rocks which were emplaced during syn- to-post collisional stages of long-term crustal accretion and extensional stages since the late Paleocene.
E.Yaçın Ersoy, Cüneyt Akal, Martin R. Palmer, Regina Mertz-Kraus   +3 more
doaj   +1 more source

Petrografi Dan Geokimia Unsur Utama Granitoid Pulau Bangka: Kajian Awal Tektonomagmatisme [PDF]

, 2013
Pulau Bangka tersusun oleh Granit Klabat dan variasi granitoidnya. Penelitian ini bertujuan mengetahui karakteristik Granitoid Pulau Bangka untuk diaplikasikan dalam mempelajari magmatisme, situasi tektonik dan hubungan antar granitoidnya untuk ...
Widana, K. S. (Kurnia)
core   +2 more sources

Static recrystallization of shocked calcite in Ries impact breccias

Meteoritics &Planetary Science, EarlyView.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann, Fabian Dellefant, Lina Seybold, Wolfgang W. Schmahl, Elena Sturm, Daniel Weidendorfer, Sandro Jahn, Iuliia V. Sleptsova, Stuart A. Gilder   +8 more
wiley   +1 more source

Tourmaline chemistry and investigation of its formation conditions in the northern intrusive body of the Nain ophiolite complex in the northeast of Isfahan Province [PDF]

پترولوژی
IntroductionGeographically, the granitoid intrusion under investigation is located in Ardestan, in the northeastern part of Isfahan Province and to the north of the Nain ophiolitic complex, between longitudes 52°50′ to 53°03′ E and latitudes 33°09′N to ...
Mohammad Ali Mackizadeh, Farimah Ayati, Mojtaba Amini   +2 more
doaj   +1 more source

Provenance history of a Late Triassic-Jurassic Gondwana margin forearc basin, Murihiku Terrane, North Island, New Zealand: petrographic and geochemical constraints [PDF]

, 2004
The Murihiku Terrane in the North Island was a forearc basin adjacent to a volcanic arc along the eastern margin of Gondwana during the Mesozoic. The rocks that infill the basin are mainly volcaniclastic sandstones and mudstones, often turbiditic, with ...
Briggs, Roger M., Middleton, Matthew P., Nelson, Campbell S.   +2 more
core   +2 more sources

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Thermal expansion of granitoids

Environmental Earth Sciences, 2018
The thermal rock properties are particularly important for natural stones whenever a temperature change may occur, which becomes particularly important when different materials are combined on any architectural structure. The thermal expansion of a rock is dependent on the coefficients of the expansion of the individual rock-forming minerals and the ...
Siegesmund, Siegfried, Sousa, Luís, Knell, Christian   +2 more
openaire   +2 more sources

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source