Results 61 to 70 of about 199 (173)

Mineralogy, geochemistry and conditions of formation Permian-Triassic intraplate granitoids of Sinyushenskiy Massif (Gorny Altai)

Литосфера, 2016
The data on geological settings, ages, special features of mineralogy and composition of Sinyushensky Massif granitoids the in north-west part of the Gorny Altay region.
N. N. Kruk, O. A. Gavrushkina, C. G. Shokalskiy, A. V. Travin   +3 more
doaj   +2 more sources

THERMOCHRONOLOGY AND MATHEMATICAL MODELING OF THE FORMATION DYNAMICS OF RARE‐METAL‐GRANITE DEPOSITS OF THE ALTAI COLLISION SYSTEM

Геодинамика и тектонофизика, 2019
The article presents an event correlation of the Permian‐Triassic granites of the Altai collision system, which are associated with industrial ore deposits and occurrences (Mo‐W, Sn‐W, Li‐Ta‐Be).
N. G. Murzintsev, I. Yu. Annikova, A. V. Travin, A. G. Vladimirov, B. A. Dyachkov, V. I. Maslov, T. A. Oitseva, O. A. Gavryushkina   +7 more
doaj   +1 more source

DURATION OF GRANITOID MAGMATISM IN PERIPHERAL PARTS OF LARGE IGNEOUS PROVINCES (BASED ON 40AR/39AR ISOTOPIC STUDIES OF ALTAI PERMIAN-TRIASSIC GRANITOIDS)

Геодинамика и тектонофизика, 2017
In large igneous provinces (LIP) of fold areas, granitoid rocks are dominant, while mantle-derivated rocks play a subordinate role in rock formation. If magma emissions are impulsive, it may take 25–30 million years for a LIP to form and take shape.
O. A. Gavryushkina, A. V. Travin, N. N. Kruk   +2 more
doaj   +1 more source

Geological mapping of intrusive rocks: a case study in the Garzón region, the Eastern Cordillera of the Colombian Andes

Geologia USP. Série Científica, 2019
Jurassic granites (sensu lato) and related rocks are the most abundant rocks cropping out in the Eastern Cordillera of Colombia in the northern Andes.
Daniel Alejandro García-Chinchilla, Silvio Roberto Farias Vlach   +1 more
doaj   +1 more source

Physicochemical conditions of the formation of the Larino granite-gneiss dome (South Ural)

Georesursy
The Larino granite-gneiss dome is located on the border of the Aramil-Sukhtelya and Magnitogorsk megazones and is a two-headed anticlinal structure, the nuclear parts of which are composed of granitoids of the Pervomai and Larino massifs, and their ...
V. I. Snachev, A. V. Snachev, V. Yu. Prokofiev   +2 more
doaj   +1 more source

Extensive crystal fractionation of high-silica magmas revealed by K isotopes. [PDF]

Sci Adv, 2022
Wang ZZ, Teng FZ, Wu FY, Liu ZC, Liu XC, Liu SA, Huang TY.   +6 more
europepmc   +1 more source

Volatile‐Assisted Intrusion and Autometasomatism of Leucogranites in the Khumbu Himalaya, Nepal

The Journal of Geology, 1999
Abstract Leucogranite crops out in the upper Imja Khola, Khumbu Himalaya, Nepal, where it makes up approximately 50% of the exposed bedrock. Leucogranites and their associated aplite‐pegmatites typically intruded as concordant sills, millimeters‐ to kilometers‐wide.
Weinberg, R, Searle, M
openaire   +1 more source

Magmatic surge requires two-stage model for the Laramide orogeny. [PDF]

Nat Commun, 2023
Schwartz JJ, Lackey JS, Miranda EA, Klepeis KA, Mora-Klepeis G, Robles F, Bixler JD.   +6 more
europepmc   +1 more source

LATE NEOPROTEROZOIC RARE-METAL LEUCOGRANITE FROM THE KHARIUSIKHA MASSIF OF YENISEI RIGDE: GENESIS AND RELATIONSHIP TO MAGMATISM OF A LARGE IGNEOUS PROVINCE

Геодинамика и тектонофизика
The paper deals with the petrogeochemical composition and U-Pb (SHRIMP-II) age (753±6 Ma) of subalkaline leucogranites and syenites from the Khariusikha massif of the Yenisei Ridge, which contain rare-metal mineralization.
A. D. Nozhkin, O. M. Turkina
doaj   +1 more source

Assessing environmental and radiological impacts and lithological mapping of beryl-bearing rocks in Egypt using high-resolution sentinel-2 remote sensing images. [PDF]

Sci Rep, 2023
Khaleal FM, El-Bialy MZ, Saleh GM, Lasheen ESR, Kamar MS, Omar MM, El-Dawy MN, Abdelaal A.   +7 more
europepmc   +1 more source