Results 31 to 40 of about 14,904 (246)
Terra Digitalis, 2019 The Xáltipan ignimbrite records the largest single-eruption of the Trans-Mexican Volcanic Belt up to date (≥344 km3 uncompacted volume). As most large ignimbrites, this ignimbrite presents common challenges when mapping.
Jaime Alberto Cavazos-Álvarez +1 more
doaj +1 more source
Terrestrial, Atmospheric and Oceanic Sciences, 2021 The white ignimbrite layer on top of volcanic sequences in the Coastal Range is the youngest eruption of the northern Luzon Arc in the Taiwan region. A gabbroic enclave was coexisting with the andesitic ignimbrite in this sequence. This study reports the
Yu-Ming Lai +5 more
doaj +1 more source
A review of late Quaternary silicic and some other tephra formations from New Zealand: their stratigraphy, nomenclature, distribution, volume, and age. [PDF]
, 1990 The stratigraphic relationships and distribution of 36 named late Quaternary (≤c. 50 000 yr B P.) silicic tephra formations, erupted from 4 volcanic centres—Okataina, Taupo, Maroa, and Tuhua (Mayor Island)—are presented.
Froggatt, Paul C., Lowe, David J.
core +2 more sources
Characteristics and properties of Bitlis ignimbrites and their environmental implications
Materiales de Construccion, 2020 Bitlis rock is used as a construction material and comes from the lava emitted by volcanoes and their subsequent transformation into ignimbrites. This type of rocks has been characterized physically, chemically, toxicologically and radioactively using ...
E. Işık +4 more
doaj +1 more source
Journal of Volcanology and Geothermal Research, 2019 The Ilopango caldera is located in the central part of El Salvador, within the right-lateral El Salvador Fault System (ESFZ) and adjacent to the capital city of San Salvador. The caldera has a polygonal shape of 17 × 13 km and hosts an intra-caldera lake.
Ivan Suñe-Puchol +9 more
semanticscholar +1 more source
Mekanisme erupsi ignimbrit Kaldera Maninjau, Sumatera Barat
Indonesian Journal on Geoscience, 2014 http://dx.doi.org/10.17014/ijog.vol2no1.20073Maninjau is a large collapsed caldera that was resulted from a large eruption of silicic pyroclastic material (220-250 km3), and was distributed to more than 75 km away from the source. Field observations have
Agung Pribadi +2 more
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Two Acheuleans, two humankinds. From 1.5 to 0.85 Ma at Melka Kunture (Upper Awash, Ethiopian highlands) [PDF]
, 2017 The Acheulean is the longest-lasting human cultural record, spanning approximately 1.5 Ma and three continents. The most comprehensive sequences are found in East Africa, where, in large-scale syntheses, the Lower Pleistocene Acheulean (LPA) has often ...
Gallotti, Rosalia, Mussi, Margherita
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Magmatic record of India-Asia collision [PDF]
, 2015 This work was financially co-supported by Chinese Academy of Sciences (XDB03010301) and other Chinese funding agencies (Project 973: 2011CB403102 and 2015CB452604; NSFC projects: 41225006, 41273044, and 41472061).New geochronological and geochemical data
Cawood, Peter Anthony +8 more
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Earth and Planetary Science Letters, 2018 Spire-like pinnacles and fins are common features in silicic ignimbrite sheets that represent the fluxing of water through the cooling deposit. Fumarolic pinnacles at Crater Lake, Oregon (Mt.
M. Hudak, I. Bindeman
semanticscholar +1 more source
Geological Magazine, 1967 With reference to recognition by P. C. Aw of the Temangan dike as an ignimbrite (see this Bibliography Vol. 31, No. 8, 10 E67-07201), it is pointed out that rocks mapped as quartz porphyry in other Malayan localities are probably also ignimbrites. The fissure in which the Temangan dike is located is considered part of a major structural element which ...
openaire +1 more source