Results 21 to 30 of about 384 (188)

The metamorphic and magmatic record of collisional orogens

Nature Reviews Earth & Environment, 2021
The Cenozoic Himalaya-Tibet orogen is generally regarded as the archetypal continental collision zone and is often used as an analogue for interpreting ancient orogenic events. However, given the wide diversity observed in present-day collisional mountain belts, the extent to which such inferences can be made remains debated. In this Review, we compare
Owen M. Weller, Catherine M. Mottram, Marc R. St-Onge, Charlotte Möller, Rob Strachan, Toby Rivers, Alex Copley   +6 more
openaire   +1 more source

Delamination in collisional orogens: Thermomechanical modeling

Journal of Geophysical Research: Solid Earth, 2012
Modes of mantle delamination in collision zones are discussed in the light of 2D numerical modeling. Freely evolving thermomechanical models take into account phase changes in the mantle and melting in the crust. Distinct modes are identified, in which orogens undergo mantle delamination concurrently or after collision.
K. Ueda, T. V. Gerya, J.‐P. Burg
openaire   +2 more sources

Petrogenesis of Triassic Granitoids in the Guide Area, Western Qinling: Implications for the Scissors-Like Subduction to Collision Orogenic Processes [PDF]

Lithosphere
Indosinian granitoids are widespread in the western Qinling Orogen, offering valuable insights into the geodynamic evolution of the Qinling Orogenic Belt and crust-mantle interactions.
Yude Lei, Yuping Zhang, Guangyue Cao, Zhen Zhao, Jun Liu, Guangxiong Qin, Shaokang Yang, Dailei Zhang, Xianchun Tang   +8 more
doaj   +1 more source

The collision model of the Crimean orogen - the experience of the finite element method

Геофизический журнал, 2013
Finite elements method is attracted for numerical modeling of crust deformation of Crimea Mountains within hypothesis of its collisional formation. Elastic and elastoplastic (Coulomb) ap-proaches are used.
V. V. Gonchar
doaj   +1 more source

Spatiotemporal distribution and geodynamic mechanism of the nearly NS-trending rifts in the Tibetan Plateau

Dizhi lixue xuebao, 2021
A set of nearly NS-trending rifts developed in the Himalayan orogen and southern Tibet, which are the large-scale extensional structures formed under the continuous compression of the Indo-Eurasia continent, playing a significant role in revealing the ...
BIAN Shuang, YU Zhiquan, GONG Junfeng, YANG Rong, CHENG Xiaogan, LIN Xiubin, CHEN Hanlin   +6 more
doaj   +1 more source

Continental Collision Structures and Post-Orogenic Geological History of the Kangerlussuaq Area in the Southern Part of the Nagssugtoqidian Orogen, Central West Greenland

Geosciences, 2014
Deep-seated continental collision sutures, formed at a depth of more than 20 km, are exposed near Kangerlussuaq, close to the Greenland ice cap, on the southern margin of the Nagssugtoqidian orogen in Central West Greenland, thus offering a rare ...
Jon Engström, Knud Erik S. Klint
doaj   +1 more source

COSC-2 – drilling the basal décollement and underlying margin of palaeocontinent Baltica in the Paleozoic Caledonide Orogen of Scandinavia [PDF]

Scientific Drilling, 2022
The Collisional Orogeny in the Scandinavian Caledonides (COSC) scientific drilling project aims to characterise the structure and orogenic processes involved in a major collisional mountain belt by multidisciplinary geoscientific research.
H. Lorenz, J.-E. Rosberg, C. Juhlin, I. Klonowska, R. Lescoutre, G. Westmeijer, B. S. G. Almqvist, M. Anderson, S. Bertilsson, M. Dopson, J. Kallmeyer, J. Kück, O. Lehnert, L. Menegon, C. Pascal, S. Rejkjær, N. N. W. Roberts   +16 more
doaj   +1 more source

A Paradigm Shift: North China Craton's North Margin Orogen Is the Collisional Suture With the Columbia Supercontinent

Geochemistry, Geophysics, Geosystems, 2023
In a new study, Wu, Wang, Zhou, Zhao, Haproff, et al. (2022, https://doi.org/10.1029/2022GC010662) present a comprehensive study of the North Margin Orogen of the North China Craton (NCC), showing that older accreted rocks in this belt preserve a record ...
Timothy M. Kusky, Alhousseyni Traore
doaj   +1 more source

The Importance of Rift Inheritance in Understanding the Early Collisional Evolution of the Western Alps

Geosciences, 2022
We reassess the architecture and tectonic history of the Western Alps based on recent knowledge developed at rifted margins. First, we replace the main Alpine units of our study area into a synthetic rifted margin template based on diagnostic petrologic,
Gianreto Manatschal, Pauline Chenin, Isabelle Haupert, Emmanuel Masini, Gianluca Frasca, Alessandro Decarlis   +5 more
doaj   +1 more source

Preservation and Recycling of Crust during Accretionary and Collisional Phases of Proterozoic Orogens: A Bumpy Road from Nuna to Rodinia

Geosciences, 2013
Zircon age peaks at 2100–1650 and 1200–1000 Ma correlate with craton collisions in the growth of supercontinents Nuna and Rodinia, respectively, with a time interval between collisions mostly
Kent C. Condie
doaj   +1 more source