Results 111 to 120 of about 3,780 (205)

Late-Variscan multistage hydrothermal processes unveiled by chemical ages coupled with compositional and textural uraninite variations in W-Au deposits in the western Spanish Central System Batholith

open access: yesGeologica Acta, 2019
The scheelite skarn from Los Santos and the W-Au veins from El Cabaco district, located in the Spanish Central System Batholith (SCSB), are some of the best-known tungsten ore deposits in Spain.
S.M. Timón-Sánchez   +5 more
doaj   +1 more source

Exploring Durrës between East and West: discovery of a protostonepaste—archaeological context and archaeometric analysis

open access: yesHeritage Science
This research delves into the investigation of a ceramic sample discovered in the southern sector of the Durrës Amphitheatre, with a primary focus on comprehending its composition, origin, and cultural importance.
Chiara Casolino   +6 more
doaj   +1 more source

Thermal Constraints on the Emplacement Rate of a Large Intrusive Complex: The Manaslu Leucogranite, Nepal Himalaya [PDF]

open access: yes, 2017
The emplacement of the Manaslu leucogranite body (Nepal, Himalaya) has been modelled as the accretion of successive sills. The leucogranite is characterized by isotopic heterogeneities suggesting limited magma convection, and by a thin (
ANNEN, C.   +2 more
core  

Early Archean tonalite gneiss in the upper peninsula of Michigan [PDF]

open access: yes
Geochronological results on tonalite gneiss of northern Michigan that is 3.56 Ga or slightly older is presented. Tonalitic augen gneiss and structurally overlying biotite gneiss and schist are exposed in a dome near Watersmeet.
Peterman, Z. E.   +2 more
core   +1 more source

A modern pulse of ultrafast exhumation and diachronous crustal melting in the Nanga Parbat Massif. [PDF]

open access: yesSci Adv, 2022
Guevara VE   +8 more
europepmc   +1 more source

Did Patagonia collide with Gondwana in the Late Paleozoic? Some insights from a multidisciplinary study of magmatic units of the North Patagonian Massif

open access: yesGeologica Acta, 2011
The origin of Patagonia and its relations with the South American crustal blocks to the north have been a matter of debate for decades. We report results from a multidisciplinary study centered on Paleozoic granitoids exposed in the northeastern corner ...
A.E. RAPALINI   +5 more
doaj  

The Borborema Pegmatite Province, NE-Brazil revisited [PDF]

open access: yes, 2015
Considering the internal structure, mineralogical distribution and geochemical data on K-feldspar, white micas, Nb-Taoxides, tourmalines, garnet and spinel, it becomes clear that the pegmatites classified as "heterogeneous" (Johnston 1945) include ...
Barreto, S.   +5 more
core  

Mineralogical characterisation of tantalum ores for the optimization of their processing [PDF]

open access: yes, 2016
Peer ReviewedPostprint (published ...
Alfonso Abella, María Pura   +7 more
core   +1 more source

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