Journal ArticleDOI
Delamination and delamination magmatism
Robert W. Kay,S. Mahlburg Kay +1 more
Reads0
Chats0
TLDR
In the case of the Southern Puna Plateau, central Andes, the most deformation occurs at the top of the mantle and bottom of the crust, where most of the negative buoyancy lies.About:
This article is published in Tectonophysics.The article was published on 1993-03-15. It has received 1323 citations till now. The article focuses on the topics: Asthenosphere & Delamination.read more
Citations
More filters
Journal ArticleDOI
The Genesis of Intermediate and Silicic Magmas in Deep Crustal Hot Zones
TL;DR: In this article, a model for the generation of intermediate and silicic igneous rocks is presented, based on experimental data and numerical modeling, which is directed at subduction-related magmatism, but has general applicability to magmas generated in other plate tectonic settings, including continental rift zones.
Journal ArticleDOI
Recycling lower continental crust in the North China craton
Shan Gao,Shan Gao,Roberta L. Rudnick,Hong-Ling Yuan,Xiaoming Liu,Yongsheng Liu,Wen-Liang Xu,Wenli Ling,John C. Ayers,Xuan-Che Wang,Qing-Hai Wang +10 more
TL;DR: It is suggested that lower crustal foundering occurred within the North China craton during the Late Jurassic, and thus provides constraints on the timing of lithosphere removal beneath the NorthChina craton.
Journal ArticleDOI
Adakitic magmas: modern analogues of Archaean granitoids
TL;DR: Sajona et al. as mentioned in this paper showed that the liquids produced by melting of tholeiite in subduction-like P-T conditions are adakitic in composition, indicating that modern adakites have trondhjemitic affinities (high Na2O contents and K2O/Na2O∼0.5) and their Mg no.
Journal ArticleDOI
Nature and significance of the Early Cretaceous giant igneous event in eastern China
TL;DR: In this article, Zhang et al. used zircon U-Pb SHRIMP (5 samples), laser ablation (LA) ICP-MS (22 samples), and TIMS (5 sample) dating to establish that the Early Cretaceous was a significant period of igneous activity in the Liaodong Peninsula, with a duration of about 10 Ma.
Journal ArticleDOI
Origin of Late Mesozoic igneous rocks in Southeastern China: implications for lithosphere subduction and underplating of mafic magmas
X.M. Zhou,W.X. Li +1 more
TL;DR: In this article, the authors suggest that during the period from 180 to 80 Ma, the slab dip angle of Paleo-Pacific plate subduction underneath SE China increased from a very low angle to a median angle, and the magmatic activity of the SE China continental margin migrated oceanward to the southeast.
References
More filters
The continental crust: Its composition and evolution
TL;DR: In this paper, the authors describe the composition of the present upper crust and deal with possible compositions for the total crust and the inferred composition of lower crust, and the question of the uniformity of crustal composition throughout geological time is discussed.
Journal ArticleDOI
Derivation of some modern arc magmas by melting of young subducted lithosphere
Marc J. Defant,Mark S. Drummond +1 more
TL;DR: In this paper, the trace-element geochemical properties of the adakites (termed "adakites") of modern island and continental arcs are shown to be consistent with a derivation by partial melting of the subducted slab, and in particular that subducting lithosphere younger than 25 Myr seems to be required for slab melting to occur.
Journal ArticleDOI
Extensional collapse of orogens
TL;DR: The extensional collapse of orogens offers a partial explanation for why oceans cyclically close and reopen in roughly the same places, preservation of very high pressure metamorphic rocks, for the return of orogenic large crustal thicknesses to normal without very much erosional denudation.
Journal ArticleDOI
Observations at convergent margins concerning sediment subduction, subduction erosion, and the growth of continental crust
Roland von Huene,David W. Scholl +1 more
TL;DR: Sediment subduction occurs where sediment remains attached to the subducting oceanic plate and underthrusts the seaward position of the upper plate's resistive buttress (backstop) of consolidated sediment and rock as discussed by the authors.
Journal ArticleDOI
Uplift of the Central Andean Plateau and bending of the Bolivian orocline
TL;DR: In this paper, topographic data are combined with data on structure magmatism, seismicity, and paleomagnetism to support a simple kinematical model for the late Cenozoic evolution of the central Andes.
Related Papers (5)
Derivation of some modern arc magmas by melting of young subducted lithosphere
Marc J. Defant,Mark S. Drummond +1 more
Dehydration melting of metabasalt at 8-32 kbar : Implications for continental growth and crust-mantle recycling
Robert P. Rapp,E. Bruce Watson +1 more