Effects of Water on the Rheology of Dominant Minerals and Rocks in the Continental Lower Crust: A Review
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Earth Science"
DOI: 10.1007/s12583-020-1307-9
Abstract: As an important part of the continental lithosphere, the continental lower crust can influence and control many important geodynamic processes, which are of great significance to the evolution of the lithosphere. Extensive plastic deformation is… read more here.
Keywords: lower crust; continental lower; rheology; effects water ... See more keywords
Tibetan dichotomy exposed in the Canadian Shield: A lower crustal perspective
Sign Up to like & getrecommendations! Published in 2020 at "Earth and Planetary Science Letters"
DOI: 10.1016/j.epsl.2020.116375
Abstract: Abstract It has been hypothesized that much of central and eastern Tibet coincides with gravitationally driven flow of weak lower continental crust. Magnetotelluric profiles throughout Tibet reveal several deep crustal zones of high conductivity inferred… read more here.
Keywords: canadian shield; crust; lower crustal; shear zone ... See more keywords
Subduction of the Indian lower crust beneath southern Tibet revealed by the post-collisional potassic and ultrapotassic rocks in SW Tibet
Sign Up to like & getrecommendations! Published in 2017 at "Gondwana Research"
DOI: 10.1016/j.gr.2015.09.005
Abstract: Abstract New major and trace elemental, Sr–Nd–Pb isotope, and zircon U–Pb geochronological and Hf–O isotope data of post-collisional potassic and ultrapotassic volcanic rocks (PVRs and UPVs, respectively) along with geochemical data of PVRs, UPVs, and… read more here.
Keywords: crust; post collisional; lower crust; indian lower ... See more keywords
Lithium isotopic composition and concentration of Himalayan leucogranites and the Indian lower continental crust
Sign Up to like & getrecommendations! Published in 2017 at "Lithos"
DOI: 10.1016/j.lithos.2017.05.001
Abstract: Abstract The lithium isotopic compositions of adakitic rocks and K-rich volcanic rocks in southern Tibet range from + 1.3‰ to + 7.5‰ and − 4.9‰ to + 3.5‰, respectively. The subduction of the Indian Plate beneath the Lhasa Terrane… read more here.
Keywords: continental crust; crust; lower crust; isotopic ... See more keywords
Thermal, rheological and kinematic conditions for channelized lower crustal flow in a threshold example
Sign Up to like & getrecommendations! Published in 2019 at "Tectonophysics"
DOI: 10.1016/j.tecto.2019.01.002
Abstract: Abstract Lower crustal flow zones occur in large and hot orogens and rifts, where they occur in association with large areas possessing high gravitational potential energy (GPE) and low lower crust viscosity. Lower crustal flow… read more here.
Keywords: lower crustal; crustal flow; lower crust; channelized lower ... See more keywords
Observations of guided waves from the Pamir seismic zone provide additional evidence for the existence of subducted continental lower crust
Sign Up to like & getrecommendations! Published in 2019 at "Tectonophysics"
DOI: 10.1016/j.tecto.2019.04.007
Abstract: Abstract As part of the TIPAGE (TIen shan – PAmir GEodynamic program) project, passive seismological observations were made along an approximately N-S profile crossing the Pamir seismic zone for about one year. From these observations… read more here.
Keywords: lower crust; velocity; guided waves; zone ... See more keywords
Late Oligocene Orogen‐Scale Tilting in Northern Tibet: A Response to Northward Injection of the Tibetan Lower Crust?
Sign Up to like & getrecommendations! Published in 2023 at "Geophysical Research Letters"
DOI: 10.1029/2022gl102700
Abstract: The East Kunlun Shan (EKLS) in northern Tibet occupies boundaries of the low‐relief topography and lower crustal low‐velocity zone in the interior plateau, making it ideal for exploring the relationship of surface deformation with underlying… read more here.
Keywords: orogen scale; lower crust; scale tilting; northern tibet ... See more keywords
Acidic fluids in the Earth’s lower crust
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-00719-3
Abstract: Fluid flux through Earth’s surface and its interior causes geochemical cycling of elements in the Earth. Quantification of such process needs accurate knowledge about the composition and properties of the fluids. Knowledge about the fluids… read more here.
Keywords: fluids earth; earth lower; acidic fluids; lower crust ... See more keywords
Late Jurassic I-type rhyolites from the Duobuza region, north-central Tibet: evidence for the occurrence of juvenile lower crust and crustal growth in the Southern Qiangtang Terrane
Sign Up to like & getrecommendations! Published in 2019 at "International Geology Review"
DOI: 10.1080/00206814.2019.1647470
Abstract: ABSTRACT Previous studies of the Southern Qiangtang (SQ) Terrane in Tibet have shown significant growth of continental crust during the late Mesozoic (ca. 170–120 Ma) through underplating of mantle-derived melts beneath ancient lower crust. However,… read more here.
Keywords: crust; juvenile lower; lower crust; late jurassic ... See more keywords
The Generation of Arc Andesites and Dacites in the Lower Crust of a Cordilleran arc, Fiordland, New Zealand
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Petrology"
DOI: 10.1093/petrology/egab043
Abstract: We present microbeam major- and trace-element data from 14 monzodiorites collected from the Malaspina Pluton (Fiordland, New Zealand) with the goal of evaluating processes involved in the production of andesites in lower-arc crust. We focus… read more here.
Keywords: arc; lower crust; values ppm; fiordland new ... See more keywords
A Reconnaissance Study of Ti-minerals in Cratonic Granulite Xenoliths and their Potential as Recorders of Lower Crust Formation and Evolution
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Petrology"
DOI: 10.1093/petrology/egx080
Abstract: A comprehensive petrographic and in situ major and trace element study of rutile, ilmenite and Ti-magnetite was undertaken in six lower crustal xenoliths of metabasaltic (?underplate) and metasedimentary (subduction) origin from the Diavik kimberlites (central… read more here.
Keywords: crust; crust formation; lower crust; formation evolution ... See more keywords