Results 1 to 10 of about 479 (137)

Slab pileup in the mantle transition zone and the 30 May 2015 Chichi‐jima earthquake

open access: yesGeophysical Research Letters, 2016
The 30 May 2015 Chichi‐jima M8 earthquake is one of the largest deep focus earthquakes ever recorded and its depth of 682 km puts it near the base of the mantle transition zone.
Robert W. Porritt, Shoichi Yoshioka
doaj   +2 more sources

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  

+14 more sources

High‐Pressure Transformations and Stability of Ferromagnesite in the Earth's Mantle

open access: yesGeophysical Monograph Series, Page 105-113., 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 ...
Eglantine Boulard   +2 more
wiley  

+19 more sources

Advances in seismic imaging of mantle transition zone discontinuities

open access: yes地球与行星物理论评, 2023
Located between the 410-km and 660-km discontinuities, the mantle transition zone is the key region for understanding the thermal and chemical structure and the dynamic evolution of the Earth’s mantle.
Chunquan Yu   +3 more
doaj   +1 more source

Segregated oceanic crust trapped at the bottom mantle transition zone revealed from ambient noise interferometry

open access: yesNature Communications, 2021
By combining ambient noise interferometry with mineral physics modeling, this work sheds new light on mantle transition zone physics. Their findings provide new evidence of segregated oceanic crust subducted and trapped within the mantle transition zone,
Jikun Feng   +4 more
doaj   +1 more source

Upper mantle melt caused by a subducted slab in the Indian-Eurasian continental subduction zone

open access: yesCommunications Earth & Environment, 2023
A low-velocity layer atop the mantle transition zone has been extensively observed worldwide. In subduction zones, this layer is widely explained as partial melting triggered by slab subduction on a regional or global scale. However, direct observational
Guohui Li   +4 more
doaj   +1 more source

The Structure and Elasticity of CaO3 Under High Pressure by First-Principles Simulation

open access: yesFrontiers in Earth Science, 2022
The structure, electrical properties, elasticity, and anisotropy of the newly discovered mantle mineral, CaO3, are obtained under 10–50 GPa by first-principles simulation to understand their relations with the composition and structure of the mantle ...
Hanyu Wang   +7 more
doaj   +1 more source

Cold and Wet Mantle Transition Zone Beneath the Mediterranean Sea Revealed by the Electrical Image

open access: yesApplied Sciences, 2023
A three-dimensional electrical conductivity model of the mantle beneath North Africa and Southern Europe is obtained by geomagnetic depth sounding. C-responses are estimated from geomagnetic data observed at observatories in and around the region and ...
Shiwen Li, Yunhe Liu
doaj   +1 more source

Oceanic and super-deep continental diamonds share a transition zone origin and mantle plume transportation

open access: yesScientific Reports, 2021
Rare oceanic diamonds are believed to have a mantle transition zone origin like super-deep continental diamonds. However, oceanic diamonds have a homogeneous and organic-like light carbon isotope signature (δ13C − 28 to − 20‰) instead of the extremely ...
Luc S. Doucet   +2 more
doaj   +1 more source

Komatiites From Mantle Transition Zone Plumes

open access: yesFrontiers in Earth Science, 2020
During the Archean, episodic volcanism commonly included both plume- and arc-type magmatism, raising the issue of a possible link between “bottom up” and “top down” geodynamic processes.
Derek Wyman
doaj   +1 more source

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