Heavy oxygen recycled into the lithospheric mantle. [PDF]
Sci Rep, 2019 AbstractMagmas in volcanic arcs have geochemical and isotopic signatures that can be related to mantle metasomatism due to fluids and melts released by the down-going oceanic crust and overlying sediments, which modify the chemistry and mineralogy of the mantle wedge.
Dallai L +4 more
europepmc +5 more sources
Lithospheric mantle buoyancy: the role of tectonic convergence and mantle composition. [PDF]
Sci Rep, 2019 AbstractPlate subduction and delamination, two key processes driving plate tectonics, are thought to be controlled by the buoyancy of the lithospheric mantle relative to the underlying asthenosphere. Most mantle delamination models consider a lithospheric density higher than the asthenosphere to ensure negative buoyancy (slab pull).
Boonma K +4 more
europepmc +5 more sources
Modeling of the Arabian/Nubian shield’s geothermal structure: a multi-parametric analysis using geophysical and geological tools [PDF]
Scientific ReportsThe Arabian-Nubian Shield (ANS) is a complex Neoproterozoic tectonic mosaic whose lithospheric structure and geothermal regime remain poorly constrained.
Menna Haggag +5 more
doaj +2 more sources
Permian Large Igneous Provinces and Their Paleoenvironmental Effects
Geophysical Monograph Series, Page 417-434., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jun Chen, Yi‐Gang Xu
wiley +6 more sources
High‐Pressure Na‐Ca Carbonates in the Deep Carbon Cycle
Geophysical Monograph Series, Page 127-136., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey Rashchenko +2 more
wiley +7 more sources
Breakup of strong cratonic lithosphere causes extensive magmatism at continental margins [PDF]
Scientific ReportsExtensive magmatism and Large Igneous Provinces (LIPs) may form at continental margins during continental breakup. While high mantle temperatures and geochemical fertility (such as plume activity) are typically considered the causes of magmatic ...
Shi Wang, Wei Leng
doaj +2 more sources
Mode of intracontinental mountain building controlled by lower crustal composition and mantle lithosphere depletion [PDF]
Nature CommunicationsTectonic plate convergence is accommodated across the continental lithosphere via discrete lithospheric subduction or distributed shortening and thickening.
Xi Xu +14 more
doaj +2 more sources
The subantarctic lithospheric mantle [PDF]
Geological Society, London, Memoirs, 2021 Abstract We present a summary of peridotite in the Subantarctic (46–60° S) surrounding the Antarctic Plate. Peridotite xenoliths occur on the Kerguelen Islands and Auckland Islands. The Kerguelen Islands are underlain by a plume, whereas the Auckland Islands are part of continental Zealandia, which is a Gondwana-rifted fragment. Small amounts
Guillaume Delpech +13 more
openaire +5 more sources
Dual-layered mantle lithosphere beneath southeastern Canadian Cordillera. [PDF]
Nat CommunAbstract The craton edge beneath southwestern Canada has been characterized as a 'lithospheric step' involving the transition from the warm Cordillera to an ancient, mechanically strong North American craton. Using converted shear waves that are sensitive to this boundary zone, our study offers a new snapshot of this transition and ...
Huang S, Gu YJ, Johnston ST.
europepmc +2 more sources
Carbonate- and silicate-metasomatized mantle beneath Himalayan-Tibetan orogenic belt [PDF]
Communications Earth & EnvironmentThe extreme geochemical enrichment of post-collisional potassium-rich lava in the Alpine-Himalayan orogenic belt has led researchers to hypothesize that enrichment is inherited from a metasomatized mantle source potentially incorporating crustal ...
Weikai Li +4 more
doaj +2 more sources