Zobrazeno 1 - 10 of 67 pro vyhledávání: '"Flow banding"'
1
Conduit system, degassing, and flow dynamics of a rhyolite lava: A case study of the Shiroyama lava on Himeshima Island, Japan
Autor: Shintaro Murohashi, Koji Uno, Motohiro Tsuboi, Kuniyuki Furukawa, Yu Horiuchi
Publikováno v: Volcanica, Vol 4, Iss 2, Pp 107-134 (2021)
This study presents a description of a rhyolite lava-forming eruption, including the conduit system, degassing history during the lava flow dynamics. We examined the Pleistocene Shiroyama rhyolite lava on Himeshima Island, Japan. The lava is mainly c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae121ffe2c0e15c26911465dc1c2cdee
https://doi.org/10.30909/vol.04.02.107134
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3
Internal Structures and Growth Style of a Quaternary Subaerial Rhyodacite Cryptodome at Ogariyama, Usu Volcano, Hokkaido, Japan
Autor: Yoshihiko Goto, Akihiko Tomiya
Publikováno v: Frontiers in Earth Science, Vol 7 (2019)
Cryptodomes are shallow-level intrusions that cause updoming of overlying sediments or other rocks. Understanding the formation of cryptodomes is important for hazard assessment, as cryptodome-forming eruptions are one of the major triggering factors
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c2f1b6909362adc15d5af8852160468
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4
Origin of hydrous alkali feldspar-silica intergrowth in spherulites from intra-plate A2-type rhyolites at the Jabal Shama, Saudi Arabia
Autor: Rami A. Bakhsh, Adel A. Surour, Said A. El-Nisr
Publikováno v: Journal of African Earth Sciences. 115:92-107
Miocene rhyolites (19.2 ± 0.9 Ma) at the Jabal Shama in western Saudi Arabia represent an example of rift-related silicic volcanism that took place during the formation of the Red Sea. They mostly consist of tuffaceous varieties with distinct flow b
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf02dd00737853e9f917a4ea93496c92
https://doi.org/10.1016/j.jafrearsci.2015.11.016
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5
Akademický článek
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6
Textures and melt-crystal-gas interactions in granites
Autor: Vigneresse, Jean-Louis
Publikováno v: Geoscience Frontiers, Vol 6, Iss 5, Pp 635-663 (2015)
Felsic intrusions present ubiquitous structures. They result from the differential interactions between the magma components (crystal, melt, gas phase) while it flows or when the flow is perturbed by a new magma injection. The most obvious structure
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00ddc307417918642fd4c6b73b9a62b1
https://doi.org/10.1016/j.gsf.2014.12.004
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7
The emplacement of a large, chemically zoned, rheomorphic, lava-like ignimbrite: the Sgurr of Eigg Pitchstone, NW Scotland
Autor: Brian R. Bell, David J. Brown
Publikováno v: Journal of the Geological Society. 170:753-767
The Sgurr of Eigg Pitchstone on the Isle of Eigg, NW Scotland, is a crystal-rich, trachydacitic, partially vitrophyric rock, which has previously been interpreted both as a lava and as a sill. We interpret this rock as a chemically zoned, rheomorphic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d71c7e853cf9e5a7e29bb13d0f6bd057
https://doi.org/10.1144/jgs2012-147
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8
Evidence for the development of permeability anisotropy in lava domes and volcanic conduits
Autor: Jamie Farquharson, Nick Varley, Yan Lavallée, Michael J. Heap, Patrick Baud
Publikováno v: Journal of Volcanology and Geothermal Research
Journal of Volcanology and Geothermal Research, Elsevier, 2016, 323, pp.163-185. ⟨10.1016/j.jvolgeores.2016.05.007⟩
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
International audience; The ease at which exsolving volatiles can migrate though magma and outgas influences the explosivity of a volcanic eruption. Volcanic rocks often contain discrete discontinuities, providing snapshots of strain localisation pro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76c3636d30ee75e63dbac37190fb1043
https://hal.archives-ouvertes.fr/hal-01374926
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9
Pseudopillow fracture systems in lavas: Insights into cooling mechanisms and environments from lava flow fractures
Autor: Anne Forbes, Steven Blake, Hugh Tuffen, David W. McGarvie
Publikováno v: Journal of Volcanology and Geothermal Research. :68-80
Detailed field observations of structures within the flow front of a Holocene trachyandesite lava from Snaefellsnes, Iceland, are presented. The lava provides exceptional three-dimensional exposure of complex brittle and ductile deformation textures
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4aa58b26388fe83caaf48056f5dd046c
https://doi.org/10.1016/j.jvolgeores.2012.07.007
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10
Evidence for refilling of previously emptied basaltic pillows in the Hooggenoeg Complex, Barberton Greenstone Belt
Autor: Harald Furnes, Maarten J. de Wit, Nils Rune Sandstå, Brian Robins
Publikováno v: Geological Magazine. 148:435-441
Some large metabasaltic pillows in the uppermost part of the Palaeoarchaean Hooggenoeg Complex in the Barberton Greenstone Belt, South Africa, exhibit flow-banded margins and homogeneous cores that have a different texture and compositional variation
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0281708fcf5cde6ddcd7571ed0f83809
https://doi.org/10.1017/s0016756810000853
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