Results 11 to 20 of about 34,202 (186)

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 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.
Richard E. Ernst   +8 more
wiley  

+11 more sources

Dual-layered mantle lithosphere beneath southeastern Canadian Cordillera [PDF]

open access: yesNature Communications
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
Songyun Huang   +2 more
doaj   +2 more sources

Differential Craton Destruction Controlled by Fossil Structures in the Central North China Craton

open access: yesGeophysical Research Letters
Craton evolution plays a fundamental role in stabilizing the continental lithosphere and the long‐term evolution of Earth's surface environment. The Shanxi Rift Zone (SRZ) within the North China Craton marks an ongoing craton destruction.
Cong Ji   +4 more
doaj   +2 more sources

Phase Diagrams of Carbonate Materials at High Pressures, with Implications for Melting and Carbon Cycling in the Deep Earth

open access: yesGeophysical Monograph Series, Page 137-165., 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 ...
Konstantin Litasov   +3 more
wiley  

+3 more sources

Ancient deep roots for Mesozoic world-class gold deposits in the north China craton: An integrated genetic perspective

open access: yes, 2020
The North China Craton (NCC) hosts some of the world-class gold deposits that formed more than 2 billion years after the major orogenic cycles and cratonization. The diverse models for the genesis of these deposits remain equivocal, and mostly focused on
Cheng‐Xue Yang, M. Santosh
semanticscholar   +1 more source

Tectonic depressions on the East-European and Siberian platforms: numerical modeling of convection beneath the Eurasian continent

open access: yesГеодинамика и тектонофизика, 2021
In modern concepts, the upper mantle of the Earth is a highly viscous incompressible liquid, and its flow is described using the Navier – Stokes equations in the Oberbeck – Boussinesq and geodynamic approximations.
V. V. Chervov   +2 more
doaj   +1 more source

Strong Physical Contrasts Across Two Mid‐Lithosphere Discontinuities Beneath the Northwestern United States: Evidence for Cratonic Mantle Metasomatism

open access: yesAGU Advances, 2023
Mid‐lithosphere discontinuities are seismic interfaces likely located within the lithospheric mantle of stable cratons, which typically represent velocities decreasing with depth.
Tianze Liu, Emily J. Chin, Peter Shearer
doaj   +1 more source

The Architecture and Evolution of the Singhbhum Craton

open access: yesEpisodes, 2020
The Singhbhum Craton is built up by successive pulses of discrete granitic magmatism at ~3.52 Ga, ~3.47-3.43 Ga, and ~3.40-3.35 Ga that produced tonalitetrondhjemite-granodiorite (TTG)-type suites and were followed by younger pulses at 3.32-3.35 Ga, and ...
Dhruba Mukhopadhyay and Abdul Matin
semanticscholar   +1 more source

MATE: An Analysis Tool for the Interpretation of Magnetotelluric Models of the Mantle

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Interpretation of electrical conductivity anomalies observed in magnetotelluric models provides an important opportunity to understand the nature of the lithospheric mantle and its dynamics.
Sinan Özaydın, Kate Selway
doaj   +1 more source

Aulacogens, the Donets Basin (Eastern Ukraine, Southwestern Russia), and the new classification of rifts: Towards a proper terminology [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2012
Some intra-cratonic basins are traditionally called “aulacogens”. This term has persisted in the geoscience literature since its invention by Soviet geologists in the mid-20th century before the triumph of the plate tectonics, but its meaning ...
Ruban Dmitry A.
doaj   +1 more source

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