Results 1 to 10 of about 6,150 (210)

Metamorphic P–T Evolution and In Situ Biotite Rb–Sr Geochronology of Garnet–Staurolite Schist From the Ramba Gneiss Dome in the Northern Himalaya

open access: yesFrontiers in Earth Science, 2022
The North Himalayan gneiss domes provide a window for looking into the deeper crust and record abundant clues of continent collisional orogenesis. This study carried out detailed petrology, in situ LA–ICP–MS biotite Rb–Sr dating, and phase equilibrium ...
Long-Long Gou   +7 more
doaj   +1 more source

Genesis and exhumation of the Kongur-Muztaghata and Maeryang gneiss domes in NE Pamir since the Mesozoic

open access: yesSolid Earth Sciences, 2023
The Kongur-Muztaghata-Maeryang terrane in NE Pamir is considered to be the western extension of the Songpan-Ganze terrane located in the northern Tibetan Plateau. The Kongur-Muztaghata gneiss dome (KMGD) is situated in the north while the Maeryang gneiss
Zhiqin Xu   +8 more
doaj   +1 more source

Structural and kinematic analysis of the Cuonadong dome, southern Tibet, China: Implications for middle-crust deformation

open access: yesJournal of Asian Earth Sciences: X, 2022
The Cuonadong Dome is located at the eastern part of the North Himalayan gneiss domes. Structural and kinematic analysis in the middle unit of the Cuonadong Dome provide significant new insights into the structural deformation of the middle crust in the ...
Jiangang Fu   +7 more
doaj   +1 more source

INTEGRAL-DIFFERENTIATED PALOGEODYNAMICS OF THE NEW UKRAINIAN GRANITE-GNEIS DOME OF THE UKRAINIAN SHIELD

open access: yesГеохімія техногенезу, 2020
The article discusses the results of comprehensive studies of the integral and differential geodynamics of the Early Proterozoic Novoukrain-skyi granite gneiss dome, which does not have its own petrological, parametric and specialized analogue on the ...
Semenyuk N.   +4 more
doaj   +1 more source

Exhumation processes of continental crustal metamorphic complexes

open access: yesGeosystems and Geoenvironment, 2022
Formation and exhumation processes of metamorphic core complexes are critical to understanding large-scale extension, which accommodate activity of mid- to lower-crustal levels.
Shuyun Cao, Lefan Zhan, Lirong Tao
doaj   +1 more source

Geophysical and geological modelling of the Sotkuma gneiss dome; Implications for the relationships of the Archean basement and the Paleoproterozoic cover in North Karelia, Eastern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2019
We studied the basement-cover relations in North Karelia, eastern Finland by modelling (1) regionally the thickness of the cover sequence and (2) the geometry of the Sotkuma dome (basement inlier).
Jarmo Kohonen   +2 more
doaj   +1 more source

Inhomogeneities of the earth’s crust of the Aldan-Stanovoy shield along the 3-DV profile (Eastern Siberia, Russia

open access: yesГеофизический журнал, 2021
Profile 3-DV (Skovorodino-Tommot) crosses in the sublatitudinal direction the Stanovoy and Aldan megablocks of the Aldan-Stanovoy shield. As the basic elements of the Earth’s crust section along the profile 3-DV, a technique was adopted for identifying ...
V. V. Stogny, G. A. Stogny
doaj   +1 more source

U-Pb SHRIMP dating of the Itabaiana Dome: a Mesoarchean basement inlier (2.83 Ga) in the Sergipano Orogenic System, Borborema Province

open access: yesBrazilian Journal of Geology, 2020
In the southern portion of the Borborema Province, in the Sergipano Orogenic System, three basement inliers have been described: the Domes of Itabaiana and Simão Dias, in Sergipe; and the Girau do Ponciano Dome, in Alagoas.
Maria de Lourdes da Silva Rosa   +4 more
doaj   +1 more source

Tectonic and Climatic Control on Quaternary Exhumation in the Eastern Pamir Domes, Western China: Insights From Geomorphic Approaches

open access: yesFrontiers in Earth Science, 2022
The Kongur Shan and Muztaghata massifs, bounded by the Kongur Shan extensional system (KES), represent tectonic and topographic anomalies in the eastern Pamir region.
Kai Cao   +6 more
doaj   +1 more source

Geology and crystallization conditions of the Särkiniemi intrusion and related nickel-copper ore, central Finland – implications for depth of emplacement of 1.88 Ga nickel-bearing intrusions [PDF]

open access: yesBulletin of the Geological Society of Finland, 2020
Several Ni-Cu deposits occur within the Kotalahti area, central Finland, in proximity to an Archaean gneiss dome surrounded by a Palaeoproterozoic craton-margin supracrustal sequence comprising quartzites, limestones, calc-silicate rocks, black schists ...
Hannu V. Makkonen, Pekka Tuisku
doaj   +1 more source

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