Results 11 to 20 of about 90,440 (261)

Traces of explosive volcanic eruptions in the Upper Ordovician of the Siberian Platform [PDF]

open access: yesEstonian Journal of Earth Sciences, 2014
Ordovician K-bentonite beds have a long history of investigation all around the world. They have been reported from Gondwana, the Argentine Precordillera, the Yangtze Platform, Laurentia, Baltica, and numerous terrains between Gondwana and Baltica, which
Warren D. Huff   +4 more
doaj   +1 more source

Deep Learning Investigation of Mercury’s Explosive Volcanism

open access: yesRemote Sensing, 2023
The remnants of explosive volcanism on Mercury have been observed in the form of vents and pyroclastic deposits, termed faculae, using data from the Mercury Atmospheric and Surface Composition Spectrometer (MASCS) onboard the Mercury surface, space ...
Mireia Leon-Dasi   +2 more
doaj   +1 more source

Observing eruptions of gas-rich compressible magmas from space

open access: yesNature Communications, 2016
Satellite observations are an important tool in volcano monitoring, but observations such as ground deformation and gas emissions are treated independently. Here, the authors present a model coupling them through their link to magma volatile contents and
Brendan McCormick Kilbride   +2 more
doaj   +1 more source

New 40Ar/39Ar dating of the Grande Ronde lavas, Columbia River Basalts, USA: Implications for duration of flood basalt eruption episodes [PDF]

open access: yes, 2010
Grande Ronde Basalt (GRB) lavas represent the most voluminous eruptive pulse of the Columbia River-Snake River-Yellowstone hotspot volcanism. With an estimated eruptive volume of 150,000 km3, GRB lavas form at least 66% of the total volume of the ...
Barry, T. L.   +5 more
core   +1 more source

Geological and chronological characteristics of the Baiyin'gaolao Formation in Gaoyaowula, Inner Mongolia

open access: yesDizhi lixue xuebao, 2021
Based on a regional geological survey at a scale of 1:50000, it reveals that the volcanic rocks from the Baiyin'gaolao Formation of Gaoyaowula in Inner Mongolia could be divided into three lithologic segments by the triple mapping method of "volcanic ...
DONG Peipei   +5 more
doaj   +1 more source

A uniform isotopic and chemical signature of dust exported from Patagonia: Rock sources and occurrence in southern environments [PDF]

open access: yes, 2007
Patagonia is considered to be the most important source of dust from South America that is deposited in surrounding areas, and we present here a systematic Sr and Nd isotopic study of sediment currently being exported.
Brunet, Frédéric   +3 more
core   +3 more sources

A subduction and mantle plume origin for Samoan volcanism

open access: yesScientific Reports, 2018
The origin of Samoan volcanism in the southwest Pacific remains enigmatic. Whether mantle melting is solely caused by a mantle plume is questionable because some volcanism, here referred to as non-hotspot volcanism, defies the plume model and its linear ...
Vincent Strak, Wouter P. Schellart
doaj   +1 more source

Biohermal structures exploration of the Pre Upper Permian sedimentary rocks of the northern part of the Buzachi Peninsula and the neighbouring shelf area of the Caspian Sea [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
A detailed lithological and stratigraphical analysis of poorly studied Pre Upper Permian sedimentary section uncovered by deep wells on the Buzachi Peninsula is carried out. The characteristic lithological strata are distinguished.
Popkov V.I., Popkov I.V.
doaj   +1 more source

Geodynamics and Rate of Volcanism on Massive Earth-like Planets [PDF]

open access: yes, 2009
We provide estimates of volcanism versus time for planets with Earth-like composition and masses from 0.25 to 25 times Earth, as a step toward predicting atmospheric mass on extrasolar rocky planets. Volcanism requires melting of the silicate mantle.
Best   +38 more
core   +1 more source

A 100-year record of North Pacific volcanism in an ice core from Eclipse icefield, Yukon Territory, Canada [PDF]

open access: yes, 2003
A record of regionally significant volcanic eruptions in the North Pacific over the last century has been developed using a glaciochemical record from Eclipse Icefield, Yukon Territory, Canada.
Germani, Mark S   +2 more
core   +3 more sources

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