Results 11 to 20 of about 1,509,179 (223)

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  

+7 more sources

Models of stress at mid-ocean ridges and their offsets [PDF]

open access: yes, 2000
This thesis aims to investigate the stresses at mid-ocean ridge offsets, and particularly at the particular class of offsets represented by oceanic microplates. Amongthese, the Easter microplate is one of the best surveyed.
Neves, Maria C., Neves, M.C.
core   +6 more sources

Volcanic evolution of an ultraslow-spreading ridge

open access: yesNature Communications, 2023
Nearly 30% of ocean crust forms at mid-ocean ridges where the spreading rate is less than 20 mm per year. According to the seafloor spreading paradigm, oceanic crust forms along a narrow axial zone and is transported away from the rift valley.
H. H. Stubseid   +4 more
doaj   +1 more source

Global Hydrogen Production During High‐Pressure Serpentinization of Subducting Slabs

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Serpentinization is among the most important, and ubiquitous, geological processes in crustal–upper mantle conditions (
A. S. Merdith   +6 more
doaj   +1 more source

Mid-Ocean Ridges [PDF]

open access: yes, 2016
The Earth’s mid-ocean ridges form a single, connected, topological feature which, as Roger Searle points out, is the longest mountain range in the world.
McClintock, Peter Vaughan Elsmere
core   +4 more sources

Origin of Alkaline Basaltic Intrusive Rocks in an Exhumed Accretionary Complex: Implications for Past Petit‐Spot Volcanism in the Ocean

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Accreted basaltic rocks are expected to provide information on intraplate volcanism in the oceans. Basaltic rocks, originating from mid‐ocean ridges, plateaus, and seamounts, have been reported from exhumed accretionary complexes. However, basaltic rocks
Ginta Motohashi   +3 more
doaj   +1 more source

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  

+5 more sources

meltPT: A Python package for basaltic whole-rock thermobarometric analysis with application to Hawaiʻi

open access: yesVolcanica, 2023
Quantifying the depths and temperatures from which igneous rocks are derived is an important step in understanding volcanic, magmatic and mantle processes.
Fergus McNab, Patrick Ball
doaj   +1 more source

Temperatures in ambient mantle and plumes: Constraints from basalts, picrites, and komatiites [PDF]

open access: yes, 2006
Several methods have been developed to assess the thermal state of the mantle below oceanic ridges, islands, and plateaus, on the basis of the petrology and geochemistry of erupted lavas. One leads to the conclusion that mantle potential temperature (i.e.
Lesher, C. M.   +25 more
core   +1 more source

Persistent Magma‐Rich Waves Beneath Mid‐Ocean Ridges Explain Long Periodicity on Ocean Floor Fabric

open access: yesGeophysical Research Letters, 2022
The ocean floor makes up the majority of the Earth's surface and yet, its geomorphology is not fully understood. Recent debate has focused on whether sea level changes—driven by Milankovitch glacial cycles—generate the abyssal hill fabric of the ocean ...
S. J. Sim
doaj   +1 more source

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