Results 31 to 40 of about 318,975 (205)

The 1.88 Ga old Mäntylä Complex, central Finland: emplacement and deformation of mafic to felsic plutonic rocks and associated Mo mineralization [PDF]

open access: yesBulletin of the Geological Society of Finland, 1992
The Mäntylä complex is part of the extensive Central Finland Granitoid Complex. The intrusive sequence was established from contact relations as well as from structural and petrographic criteria.
M. Nironen, K. Front
doaj   +1 more source

Sm-Nd ages of two meta-anorthosite complexes around Holenarsipur: Constraints on the antiquity of Archean Supracrustal rocks of the Dharwar craton [PDF]

open access: yes, 2000
Whole-rock Sm-Nd isochron ages are reported for two stratiform meta-anorthosite complexes emplaced into the Archean supracrustal-gneiss association in the amphibolite facies terrain around Holenarsipur, in the Dharwar craton, South India.
Iyer, Anantha GV   +4 more
core   +2 more sources

Early Archean granitoid gneisses and supracrustal enclaves of the southern Inukjuak domain, Québec (Canada)

open access: yes, 2019
The Inukjuak domain in northern Québec is part of the Archean Minto Block in the northwestern Superior Province of Canada, and hosts numerous km-scale supracrustal enclaves within variably-deformed granitoid gneisses. The Eoarchean (ca.
Mojzsis, Stephen, Greer, Jennika
core   +7 more sources

Supporting data for Zuo et al., Early Earth’s Phaneritic Ultramafic Rocks 1: Plate Tectonic Mantle Slices or Crustal Cumulates?

open access: yes, 2021
This dataset includes petrological and geochemical data from ultramafic rocks sampled from the Isua supracrustal belt and the East Pilbara ...
Andrew Alexander Gordon Webb (9056978)   +10 more
core   +1 more source

Contribution to the knowledge of the geological evolution of the Riacho do Pontal orogenic system – PE, BA, PI [PDF]

open access: yesGeologia USP. Série Científica, 2015
The Riacho do Pontal System (RPS) is just the central part of a long Neoproterozoic orogenic development placed at the northern periphery of the São Francisco Craton (SFC), from northeast (Sergipano belt) to southwest (Rio Preto belt).
Benjamim Bley de Brito Neves   +2 more
doaj   +1 more source

Supracrustal rocks in the Ammassalik region, South-East Greenland

open access: yesRapport Grønlands Geologiske Undersøgelse, 1989
Large belts of supracrustal rocks are abundant in the Ammassalik region of S.E. Greenland, and are referred to collectively as the Siportoq supracrustal association. They comprise overwhelmingly metasediments, mainly of quartz-rich or semipelitic composition, with variable proportions of quartz, kyanite, sillimanite, garnet and biotite.
R.P Hall   +3 more
openaire   +2 more sources

GEOLOGIA E LITOQUÍMICA DE FRAGMENTO DO GREENSTONE BELT DE CRIXÁS (ARQUEANO-PALEOPROTEROZÓICO) NO ARCO MAGMATICO DE GOIÁS (NEOPROTEROZÓICO): REGIÃO REISÓPOLIS-UIRAPURÚ (GO) [PDF]

open access: yesGeochimica Brasiliensis, 2015
The supracrustal rocks from the Uirapurú-Reisópolis region includeperidotitic komatiite, overlaid by garnet-quartz-chlorite schist, quartz-muscoviteschist, quartzite, garnet-rich quartzite, metagreywacke, metachert,amphibolite and banded iron formation ...
Raul Minas Kuyumjian   +3 more
doaj  

Geology of the Eoarchean, >3.95Ga, Nulliak supracrustal rocks in the Saglek Block, northern Labrador, Canada: the oldest geological evidence for plate tectonics [PDF]

open access: yes, 2015
The Earth is a unique planet, which has been highly evolved, diversified and complicated through geologic time, and underwent many key events, including giant impact, magma ocean, core formation, large-scale mantle differentiation and late heavy ...
Yamamoto, Shinji   +9 more
core   +1 more source

Archean granitoid gneisses and supracrustal enclaves of the southern Inukjuak domain, Quebec (Canada) [PDF]

open access: yes, 2016
The Inukjuak domain in northern Québec is part of the Archean Minto Block in the northwestern Superior Province of Canada, and hosts numerous km-scale supracrustal enclaves within variably-deformed granitoid gneisses. The Eoarchean (ca.
Greer, Jennika
core   +4 more sources

Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: Zircon geochronology from the Kangaatsiaq–Qasigiannguit region, the northern part of the 1.9–1.8 Ga Nagssugtoqidian orogen, West Greenland [PDF]

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2006
The Kangaatsiaq–Qasigiannguit region in the northern part of the Palaeoproterozoic Nagssugtoqidian orogen of West Greenland consists of poly-deformed orthogneisses and minor occurrences of interleaved, discontinuous supracrustal belts. Laser ablation ICP-
Conelly, James N., Thrane, Kristine
doaj  

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