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
Potential Nutrient Carriers of Easily Weathered Minerals from Pyroclastic Materials of Mount Merapi, Yogyakarta [PDF]
BIO Web of ConferencesThe eruption of Mount Merapi has had a negative impact on the community; however, on the other hand, it also has positive aspects that cannot be ignored.
Kurniati +6 more
doaj +1 more source
Zeolites in Mafic Pyroclastic Rocks from the Sandikli-Afyonkarahisar Region, Turkey [PDF]
Clays and Clay Minerals, 2013 AbstractGeologic mapping and crystal-chemical analysis of Middle-Upper Miocene volcanics in the Sandıklı-Afyonkarahisar region of Turkey, coupled with published zeolite analyses has revealed that western Turkey hosts unique zeolitic mineral assemblages with distinct paragenetic sequences.
Özpınar, Yahya +2 more
openaire +3 more sources
Volcanological and Geochemical Features of the Products of Sabalan’s Last Eruption, NW Iran [PDF]
پترولوژی, 2019 Sabalan volcano is located in the northwest part of Iran and 25km south of Meshkinshahr in the west Alborz-Azerbaijan structural zone. The rocks forming the Sabalan and its eastern and northern slopes are covered with significant amounts of white-gray ...
Reza Fahim Guilany +3 more
doaj +1 more source
Monitoring SO2 emission at the Soufriere Hills Volcano: implications for changes in erruptive conditions [PDF]
, 1998 FLWINinfo:eu-repo/semantics ...
A. J. H. Maciejewski +31 more
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Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract Oblique slow rifting in a hotspot setting has created a distributed volcanic zone in the central part of the Azores but it's unclear what causes focusing of magma upflow under the islands within a wide plate boundary deformation zone. For São Jorge Island, we use a three‐dimensional finite element model to evaluate crustal stress from the ...
J. D’Araújo +6 more
wiley +1 more source
Forecasting volcanic ash dispersal and coeval resuspension during the April-May 2015 Calbuco eruption [PDF]
, 2016 Atmospheric dispersion of volcanic ash from explosive eruptions or from subsequent fallout deposit resuspension causes a range of impacts and disruptions on human activities and ecosystems.
Baez, Walter Ariel +9 more
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Volcanic Ash Affected by Lightning During the Hunga 2022 Eruption
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.Abstract The 15 January 2022 eruption of Hunga volcano (Kingdom of Tonga) produced the most lightning ever documented during an explosive eruption to date. This study estimates the mass of erupted tephra that may be structurally or electromagnetically affected by the lightning, based upon lightning peak current, channel length, and ash plume particle ...
Kimberly Genareau +6 more
wiley +1 more source
Report of Investigations No. 135 Oligocene Volcanism and Multiple Caldera Formation in the Chinati Mountains, Presidio County, Texas [PDF]
, 1983 UT ...
Cepeda, Joseph C., Henry, Christopher D.
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Geoarchaeology, Volume 41, Issue 2, March/April 2026.ABSTRACT This paper presents the results of minero‐petrographic and chemical analyses of pottery and potential local raw materials from Ustica, a small volcanic island off the coast of Palermo (Sicily), inhabited during the Middle Neolithic. Typologically, the pottery shows cultural connections to the Bicromica and Serra d'Alto traditions, linking ...
G. Montana +6 more
wiley +1 more source