Results 91 to 100 of about 220,175 (263)
Baseline geochemistry of Devonian low-grade metasedimentary rocks in Cornwall: preliminary data and environmental significance. [PDF]
, 2013 Geochemical baseline data provide information on the state of the environment before modification by mining and other anthropogenic activities. A summary of the analyses of 41 elements on 100 samples from Devonian metasedimentary rocks away from areas ...
Reid, K.S. +3 more
core
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 5, May 2025.Abstract Detailed geochronology from two compositionally distinct generations of dikes and sills intruded into the Alta metamorphic aureole, north‐central Utah, complement previous geochronologic studies from the Alta stock, providing information on the timing of magmatism and the nature of emplacement.
C. J. Beno +5 more
wiley +1 more source
Electromagnetic studies of the western part of the Ukrainian Shield
Геофизический журнал, 2019 Results of synchronous magnetotelluric and magnetovariation researches along profiles Radomyshl—Fastiv and Ruzhin—Skvira conducted in 2015 for studying the deep structure of crust of the western part of the Ukrainian Shield, on purpose of search the ...
I. Yu. Nikolaev +3 more
doaj +1 more source
Frictional behavior of talc-calcite mixtures [PDF]
, 2015 Faults involving phyllosilicates appear weak when compared to the laboratory-derived strength of most crustal rocks. Among phyllosilicates, talc, with very low friction, is one of the weakest minerals involved in various tectonic settings.
Carpenter, B. M. +2 more
core +1 more source
ORIGIN OF CHOGHART IRON OXIDE DEPOSIT, BAFQ MINING DISTRICT, CENTRAL IRAN: NEW ISOTOPIC AND GEOCHEMICAL EVIDENCE [PDF]
Journal of Sciences, Islamic Republic of Iran, 2003 The origin of the Proterozoic Choghart iron oxide deposit in the Bafq mining district of Central Iran has been the subject of a long-standing dispute.
doaj
The rock components and structures of Archean greenstone belts: An overview [PDF]
Knowledge of the character and evolution of the Earth's early crust is derived from the studies of the rocks and structures in Archean greenstone belts.
Byerly, G. R., Lowe, D. R.
core +1 more source
General geology, alteration, and iron deposits in the Palaeoproterozoic Misi region, northern Finland [PDF]
, 2003 The Paleoproterozoic Misi region forms the northeastern part of the Peräpohja Schist Belt in northern Finland. The area comprises mafic volcanic and sedimentary rocks, differentiated gabbros, and late-orogenic granitoids.
Eero Hanski, Pasi Eilu, Tero Niiranen
core +1 more source
Geosciences, 2018 The relative depletion of high field strength elements (HFSE), such as Nb, Ta and Ti, on normalised trace-element plots is a geochemical proxy routinely used to fingerprint magmatic processes linked to Phanerozoic subduction.
George L. Guice +6 more
doaj +1 more source
Mantle magma-thermofluidodynamic and intracrustal granitoid-hydrothermal-metasomatic auriferous systems [PDF]
, 2007 Contents of typical models of formation of abyssal and intra-core ore-forming systems are discussed. As it has been already marked, the interaction between core and mantle ore-forming systems occurred at formation of large and unique golden-ore deposits.
Korobeynikov, A. F.
core
Minerals, 2019 In Central Galicia, there are occurrences of barren and Li–Sn–Ta-bearing pegmatites hosted by metasedimentary rocks. A number of common and contrasting features between Panceiros pegmatites (barren) and Li–Sn–Ta mineralized Presqueira pegmatite are ...
Ana Roza Llera +3 more
semanticscholar +1 more source