Results 1 to 10 of about 51,740 (216)

Petrologic and geochronological constraints on the polymetamorphic evolution of the collisional granites, Araçuaí Orogen (SE Brazil)

Anais da Academia Brasileira de Ciências, 2021
Collisional granites of the Araçuaí Orogen, southeastern Brazil, record petrological and geochronological evidence for multiple crustal melting during the orogeny evolution. U-Pb zircon data indicate that these granites crystallized at 586 ± 2 M.y.
SANDRO MAURI, MARILANE G. MELO, CRISTIANO LANA, RODSON A. MARQUES   +3 more
doaj   +2 more sources

Evolution of a low convergence collisional orogen: a review of Pyrenean orogenesis [PDF]

BSGF - Earth Sciences Bulletin, 2022
The Pyrenees is a collisional orogen built by inversion of an immature rift system during convergence of the Iberian and European plates from Late Cretaceous to late Cenozoic.
Ford Mary, Masini Emmanuel, Vergés Jaume, Pik Raphael, Ternois Sébastien, Léger Julien, Dielforder Armin, Frasca Gianluca, Grool Arjan, Vinciguerra Constance, Bernard Thomas, Angrand Paul, Crémades Antoine, Manatschal Gianreto, Chevrot Sébastien, Jolivet Laurent, Mouthereau Frédéric, Thinon Isabelle, Calassou Sylvain   +18 more
doaj   +3 more sources

Recycling of continental crust materials: Geochemical constraints from post-collisional alkaline intrusive rocks in the Dabie orogen [PDF]

Frontiers in Earth Science, 2023
Post-collisional alkaline intrusive rocks from the Dabie orogen were studied for their whole-rock major-trace elements and Sr-Nd-Hf-Pb isotopes, as well as zircon U-Pb ages and Hf-O isotopes.
Guo-Chao Sun, You-Shan Xia, Gang Wen, Lei Qin, Qing-Yang Xu, Li-Qun Dai, Li-Qun Dai, Zi-Fu Zhao, Zi-Fu Zhao   +8 more
doaj   +2 more sources

Secular change in orogenic duration reveals alternating tectonic regimes during the Archaean-Proterozoic [PDF]

Nature Communications
Geological constraints and modelling results reveal major yet poorly understood changes in Earth’s tectonic regimes during the late Archaean and Proterozoic.
Lei Zou, Guangyu Huang, Jinghui Guo, Peter A. Cawood, Jia-Hui Liu, Pinghua Liu, Shujuan Jiao, Xiao-Ping Xia, Huijuan Li, Jun-Bo Zhang, Meiyun Huang, Lifei Zhang, Guochun Zhao   +12 more
doaj   +2 more sources

TIMS Techniques for Measuring Strontium Isotope Ratios in Apatite Grains and Application to Igneous Rock Petrology. [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale This study evaluates the potential of Sr isotopic compositions in apatite grains from magmatic rocks as a proxy for initial 87Sr/86Sr ratios, addressing the need for alternative approaches to conventional whole‐rock analyses in isotopic studies of granitoid systems.
Neto C, de Morisson Valeriano C, Paravidini G, Bruno H, Carvalho M, Almeida R, Peixoto C, Bersan S, Carvalho M, Heilbron M.   +9 more
europepmc   +2 more sources

Mode of intracontinental mountain building controlled by lower crustal composition and mantle lithosphere depletion [PDF]

Nature Communications
Tectonic plate convergence is accommodated across the continental lithosphere via discrete lithospheric subduction or distributed shortening and thickening.
Xi Xu, Andrew V. Zuza, Taras Gerya, Lin Chen, Xingtao Kuang, Hanlin Chen, Baodi Wang, Jingao Liu, Xuhua Shi, Yanyun Sun, Lei Wu, Song Han, Xiubin Lin, Shufeng Yang, An Yin   +14 more
doaj   +2 more sources

Depth of slab breakoff in Archean: the role of radiogenic heat production of continental crust and eclogitization of oceanic crust [PDF]

Scientific Reports
The slab breakoff has been applied to many collisional orogen around the world to explain postcollisional magmatism and metamorphism. For Phanerozoic orogens, multiple lines of evidence indicate that ultrahigh-pressure metamorphic rocks are exhumed from ...
Yin-Long Fan, Li-Fei Zhang, Yang Wang, Zhong-Hai Li   +3 more
doaj   +2 more sources

Origin and implication of two newly identified peraluminous A-type granites in the early Paleozoic orogeny, Southeast Asia

Frontiers in Earth Science, 2023
: The amalgamation of the Yangtze and the Cathaysia Block in Neoproterozoic time led to the formation of the South China Block (SCB) and generated the Jiangnan Orogen with the occurrences of juvenile magmatic rocks.
Xu-Jie Shu, Wei Jiang, Dan Wang, Cheng Cheng, Hong-Zuo Wang   +4 more
doaj   +1 more source

The role of inheritance in forming rifts and rifted margins and building collisional orogens: a Biscay-Pyrenean perspective

BSGF - Earth Sciences Bulletin, 2021
A long-standing challenge in tectonics is to evaluate the role of inheritance and define the initial conditions of a geodynamic system, which are prerequisites to understand and model its evolution with some accuracy.
Manatschal Gianreto, Chenin Pauline, Lescoutre Rodolphe, Miró Jordi, Cadenas Patricia, Saspiturry Nicolas, Masini Emmanuel, Chevrot Sebastien, Ford Mary, Jolivet Laurent, Mouthereau Frédéric, Thinon Isabelle, Issautier Benoit, Calassou Sylvain   +13 more
doaj   +1 more source

The Role of Lower Crustal Rheology in Lithospheric Delamination During Orogeny

Frontiers in Earth Science, 2021
The continental lower crust is an important composition- and strength-jump layer in the lithosphere. Laboratory studies show its strength varies greatly due to a wide variety of composition. How the lower crust rheology influences the collisional orogeny
Lin Chen
doaj   +1 more source