Results 31 to 40 of about 7,779 (214)

Thermal structure of the crust during granulite metamorphism: petrological speculations and geodynamic implications [PDF]

, 1998
P(論文)It is shown on a basis of generalization of lateral and vertical distribution of P-T parameters in granulite-gneiss belts of various ages that the thermal gradient within the lower crust during granulite metamorphism is rather low, ca. 5-10℃/km. Two
Mints,Michael V., Konilov,Alexander N.
core  

Petrogenesis and evolution of an early Proterozoic collisional orogenic belt: The granulite belt of Lapland and the Belomorides (Fennoscandia) [PDF]

Bulletin of the Geological Society of Finland, 1984
The tectonic and metamorphic pattern of the Precambrian crust exposed in the eastern Baltic Shield is characterized by two adjacent high-grade belts (Tana and Granulite belts) located between the Archean Inari-Kola craton to the east and the South ...
P. Barbey, J. Convert, B. Moreau, R. Capdevila, J. Hameurt   +4 more
doaj   +1 more source

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Petrogenesis and Tectonic Setting of Late Mesozoic Felsic Magmatic Rocks in the Wangmushan Mining District, Northern Fujian, South China

Geological Journal, EarlyView.
The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang, Hong Wentao, Xiao Fan, Jin Guodong, Shi Hongyang, Ma Zhiwang, Wu Chen, Xue Yujingyang   +7 more
wiley   +1 more source

3D Model of Pyroxenic Granulite

, 2021
CATEGORÍA: Elemento Petrográfico CLASIFICACIÓN: Granulita Piroxenica ADQUISICIÓN: Donación FECHA DE REGISTRO: 22-09-2022CATEGORY: Petrographic Element CLASSIFICATION: Pyroxenic Granulite ACQUISITION: Donation REGISTRATION DATE: 22-09 ...
Gómez Cruz, Arley de Jesús, Ríos Cardona, John Jairo, Quiceno Colorado, July, Marín Rámirez, Lina Marcela   +3 more
core  

New constraints on the postglacial evolution of Lago Maggiore, Northern Italy

Journal of Quaternary Science, EarlyView.
ABSTRACT Lago Maggiore is situated in an overdeepened valley reach at the southern margin of the European Alps, and its thick sediment infill allows the reconstruction of the postglacial valley and lake evolution. We study here the sedimentary succession in the lower Ossola Valley, which is infilled by ~500 m of deposits. In a marginal position, a core
Lukas Gegg, Alexander Fülling, Andrew Greenwood, György Hetényi, F. Martin Hofmann, Giovanni Monegato, Jahir S. Rangel Herrera, Camille Schirra, Marco Venier, Othmar Müntener   +9 more
wiley   +1 more source

Timing of granulite-facies metamorphism in the eastern Himalayan syntaxis and its tectonic implications [PDF]

, 2010
We present geochronological evidence in the eastern Himalayan syntaxis (Namche Barwa) for high-pressure (HP) granulite-facies metamorphism and explain its importance for understanding both the deep continental subduction of the Indian plate beneath Asia ...
Xu, Wang-Chun, Parrish, Randall, Zhang, Hong-Fei, Harris, Nigel, Yuan, Hong-Lin, Guo, Liang, Hong-Fei Zhang, Randall Parrish, Liang Guo, Hong-Lin Yuan, Nigel Harris, Wang-Chun Xu   +11 more
core   +1 more source

Age and metamorphic conditions of the granulites from Capral-Jegessky synclinoria, Anabar shield

Записки Горного института, 2018
The paper presents the results of the isotope, geochemical and thermobarometric study of plagio-crystalline schist containing in the Upper Anabar series of the Anabar Shield.
L. Yu. Sergeeva, A. V. Berezin, N. I. Gusev, S. G. Skublov, A. E. Mel'nik   +4 more
doaj   +1 more source

Low–pressure metamorphism of mafic granulites in the Chinese Altay orogen, NW China: P–T path, U–Pb ages and tectonic implications

Solid Earth Sciences, 2020
Mafic granulites occur as massive lenses within host paragneisses at Wuqiagou area in the southern Chinese Altay orogen. They comprise a suite of fine–grained and coarse–grained mafic granulites, both characterized by an assemblage of orthopyroxene ...
Zhao Liu, Laixi Tong, Omar Bartoli, Yi–Gang Xu, Xiaolong Huang, Chao Li   +5 more
doaj   +1 more source

Microplate Tectonics Through Earth History and Across Solid Multispheres

Geological Society of China Bulletin, EarlyView.
The evolution of tectonic microplates throughout Earth´s history as well as the transitions between microplates across different solid spheres offers a novel approach to expanding the traditional plate tectonics theory. ABSTRACT The evolution of tectonic microplates throughout Earth's history as well as the transitions between microplates across ...
Sanzhong Li, Yanhui Suo, Jie Zhou, Guozheng Sun, Jianping Zhou, Xianzhi Cao, Bo Liu, Lingli Guo, Zhaoxia Jiang, Qianqian Li, Shujuan Zhao, Long Chen, Xi Wang, Jun Hu, Xiaohui Li, Xiyao Li, Wenyong Duan, Lin Liu, Jie Liu, Guangzeng Wang, Pengcheng Wang, Qingbin Guan, Dingshan Deng, Xu Han, Liangliang Wang, Zihao Hu, Qiuling Liu, Heda Wang, Zihan Tian, Hans‐Peter Schertl   +29 more
wiley   +1 more source