Results 11 to 20 of about 424,073 (293)

Electric charge within volcanic plumes on Earth and Io [PDF]

open access: yes, 1998
Field, experimental and theoretical investigations have been carried out into the electrification of volcanic plumes. At Sakurajima volcano, Japan, ground-level perturbations of the atmospheric electric potential gradient generated by particulate plumes ...
James, M.R., James, M. R.
core   +4 more sources

Tertiary-Quaternary intra-plate magmatism in Europe and its relationship to mantle dynamics [PDF]

open access: yes, 2006
Anorogenic intra-plate magmatism was widespread in Europe from early Tertiary to Recent times, extending west to east from Spain to Bulgaria, and south to north from Sicily to northern Germany. Magmatism is spatially and temporally associated with Alpine-
Wilson, M., Downes, Hilary
core   +5 more sources

Volcanic and sedimentary processes in phreatomagmatic volcanoes [PDF]

open access: yes, 1982
Phreatomagmatic volcanoes form when ascending magma explosively interacts with surface or groundwater at shallow depths. Three types of phreatomagmatic activity are recognised- phreaticp phreatomagmatic (s. s. ) and surtseyan - based on the degree of
Leys, C.A., Leys, Clyde Andrew
core   +7 more sources

New Permo-Carboniferous geochemical data from central Thailand: implication for a volcanic arc model [PDF]

open access: yes, 1991
Current ideas and models of geotectonic reconstructions of Southeast Asia are reviewed and new data on Late Carboniferous through Middle Permian tuffites and sills from central Thailand are presented in the light of the problems of Southeast Asian ...
Altermann, Wladyslaw
core   +1 more source

Geology, petrography, alteration, and geochemistry of the Shahrab igneous rock, Central Iran

open access: yesGeology, Ecology, and Landscapes, 2021
Eocene to Quaternary calc-alkaline volcanic and intrusive rocks are exposed in Shahrab area in the Urumieh-Dokhtar magmatic belt in the Central Iran structural zone.
Kaveh Pazand   +2 more
doaj   +1 more source

Volcanism in The Pre-Semilir Formation at Giriloyo Region; Allegedly as Source of Kebo-Butak Formation in the Western Southern Mountains

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2019
Kebo-Butak Formation was known to be the oldest volcanic rocks limited in regional terms in the lower Baturagung Hills, Gedangsari area, Gunungkidul Regency.
Sri Mulyaningsih   +3 more
doaj   +1 more source

Cenozoic volcanic rocks in the Pearl River Mouth and Southeast Hainan Basins of South China Sea and their implications for petroleum geology

open access: yesPetroleum Exploration and Development, 2013
Drilling, gravity, magnetic observation and seismic facies are combined to identify the Cenozoic volcanic rocks in the Pearl River Mouth Basin and the Southeast Hainan Basin in the northern South China Sea, and to analyze how their lithology ...
Bin ZHANG   +5 more
doaj   +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

Geological features and evaluation techniques of deep-seated volcanics gas reservoirs, Songliao Basin

open access: yesPetroleum Exploration and Development, 2008
: The significant breakthrough of natural gas exploration in deep-seated volcanic rocks of Songliao Basin, China, demonstrates that the volcanic rocks as reservoirs can form natural gas accumulations where excellent source–reservoir–caprock assemblages ...
Wen-zhi ZHAO   +8 more
doaj   +1 more source

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