Results 11 to 20 of about 85,736 (331)

Amphibole: A major carrier of helium isotopes in crustal rocks [PDF]

, 2016
The first evidence for a specific role of amphiboles in He isotope balance of crustal rocks was presented in early contributions by Gerling et al. (1971, 1976).
A.B. Verchovsky, Andrews, Ashkinadze, Baxter, Baxter, Baxter, Begemann, Belkov, Damon, Farley, Gaber, Gannibal, Gerling, Gerling, Gerling, Gerling, Gorshkov, Graham, Helz, Hilton, I.L. Kamensky, I.N. Tolstikhin, Jackson, Jackson, Jackson, Kalita, Kamensky, Kamensky, Kelley, Kendrick, Komarov, Komarov, Kremenetsky, Lee, Lee, Lee, Lee, Lippolt, M.A. Gannibal, Mamyrin, Martel, Matsumoto, Morozova, Morrison, Petrov, Pujol, S.V. Tarakanov, Scarsi, Shelby, Sherlock, Staudacher, Tolstikhin, Tolstikhin, Tolstikhin, Tolstikhin, Tolstikhin, Tolstikhin, Trull, V.I. Skiba, V.R. Vetrin, Verchovsky, Vetrin, Vetrin, Wartho, Wright, Wright   +65 more
core   +1 more source

Anomalous supply of bioessential molybdenum in mid-Proterozoic surface environments [PDF]

, 2016
We are grateful to A. Sandison and W. Thayalon for skilled technical support, and Mike Porter and an anonymous reviewer, who helped to clarify the manuscript.Peer ...
Lindgren, Paula, Parnell, John
core   +1 more source

Submagmatic to Solid-State Deformation Microstructures Recorded in Cooling Granitoids during Exhumation of Late-Variscan Crust in North-Eastern Sicily

Geosciences, 2020
Late-Variscan granitoid rocks of trondhjemitic and granitic composition, intruded in migmatitic paragneisses in the north-eastern Peloritani Mountains (southern Italy) at ~310 Ma and ~300 Ma, respectively, exhibit a range of deformation microstructures ...
Eugenio Fazio, Patrizia Fiannacca, Damiano Russo, Rosolino Cirrincione   +3 more
doaj   +1 more source

Hybridization in the subvolcanic Jaala-Iitti complex and its petrogenetic relation to rapakivi granites and associated mafic rocks of southeastern Finland [PDF]

Bulletin of the Geological Society of Finland, 1995
The 1630 Ma Jaala-Iitti complex is an example of bimodal rapakivi granite magmatism in which the interaction of granite and diabase magmas have led locally to hybridization.
P.T. Salonsaari
doaj   +1 more source

Early Cambrian U-Pb zircon age and Hf-isotope data from the Guasayán pluton, Sierras Pampeanas, Argentina: implications for the northwestern boundary of the Pampean arc [PDF]

, 2016
An Early Cambrian pluton, known as the Guasayán pluton, has been identified in the central area of Sierra de Guasayán, northwestern Argentina. A U?Pb zircon Concordia age of 533 ± 4 Ma was obtained by LA-MC-ICP-MS and represents the first report of ...
Alasino, Pablo Horacio, Baldo, Edgardo Gaspar Agustín, Basei, Miguel A. S., da Costa Campos Neto, Mario, Dahlquist, Juan Andrés, Rapela, Carlos Washington, Uran, Gimena Mariel, Verdecchia, Sebastián Osvaldo, Zandomeni, Priscila Soledad   +8 more
core   +2 more sources

Portuguese granites associated with Sn-W and Au mineralizations [PDF]

Bulletin of the Geological Society of Finland, 2002
In northern and central Portugal, there are different tin-bearing granites. Most of them are of S-type, others have mixed characteristics of I-type and S-type granites and a few are of I-type.
A.M.R. Neiva
doaj   +1 more source

Gravimetric and magnetic characterization of structural controls on Sn-W ore deposits. A case study in the san finx deposit (A Coruña)

Geogaceta, 2022
Critical raw materials are essential for the development of our society. However, most shallow ores have already been exploited and only deep targets remain unexplored. This work aims to apply indirect geophysical techniques to the San Finx Sn-W deposit
Alberto Santamaría Barragán, Puy Ayarza Arribas, Juan Alcalde, Eduard Saura, David Martí Linares, Imma Palomares, Javier Elez   +6 more
doaj   +1 more source

Schedule of Mafic to Hybrid Magma Injections Into Crystallizing Felsic Magma Chambers and Resultant Geometry of Enclaves in Granites: New Field and Petrographic Observations From Ladakh Batholith, Trans-Himalaya, India

Frontiers in Earth Science, 2020
Diorites, granites, and associated magmatic enclaves and dykes constitute the bulk of the Ladakh Batholith, which is an integral part of the Trans-Himalayan magmatic arc system.
Santosh Kumar
doaj   +1 more source

Inland extent of the Weddell Sea Rift imaged by new aerogeophysical data [PDF]

, 2012
Peer ...
Bingham, Robert George, Corr, Hugh F.J., Ferraccioli, Fausto, Jordan, Tom A., Le Brocq, Anne M., Leat, Philip T., Rippin, David M., Ross, Neil, Siegert, Martin J.   +8 more
core   +1 more source

GEOCHEMISTRY OF TRACE ELEMENTS IN ROCK-FORMING MINERALS OF GNEISSES AND GRANITES OF THE MURZINKA GRANITE AREA, CENTRAL URALS [PDF]

Минералогия, 2020
The Murzinka granite area (Central Urals), which combines Murzinka granite pluton and underlying rocks of the Murzinka-Adui metamorphic complex, exhibits an evident WE-trending geochemical zonation of magmatism with increasing of Rb, Li, Nb and Ta ...
S.V. Pribavkin, N.S. Borodina, M.V. Chervyakovskaya   +2 more
doaj   +1 more source