Zobrazeno 1 - 10
of 12 793
pro vyhledávání: '"Pyroclastic"'
Autor:
Michael Anenburg, Izzan Nur Aslam
Publikováno v:
Volcanica, Vol 7, Iss 2, Pp 813-833 (2024)
Interpretation of calcite-dominated fossil carbonatite volcanoes is complicated by the instability of many igneous carbonatite materials on Earth’s surface. One hypothesis suggests that they originate by eruption of alkali-free calcic carbonatite l
Externí odkaz:
https://doaj.org/article/02491c3f31354c1791a072f96e4e15c7
Publikováno v:
The Depositional Record, Vol 10, Iss 5, Pp 670-684 (2024)
Abstract This paper explores the response to Holocene ash inundation in different sub‐environments of two fluvio‐lacustrine systems, Las Piedritas and Totoral, focussing on the processes of volcaniclastic remobilisation. Sediment cores and outcro
Externí odkaz:
https://doaj.org/article/13adfc05aba54ae78757bf4cf32336cc
Publikováno v:
Volcanica, Vol 7, Iss 2, Pp 785-811 (2024)
Pumice cones are volcanic landforms that exist worldwide, but whose eruption has never been observed. Interpretations of these eruptions vary significantly in style, intensity, and magnitude, pertinent for volcanic hazard assessment. Aluto volcano (E
Externí odkaz:
https://doaj.org/article/6bdd0d5509d2455883087bfcf6378126
Publikováno v:
Volcanica, Vol 7, Iss 2, Pp 621-638 (2024)
Caldera-forming eruptions represent extremely hazardous events. The Loch Bà Caldera on the Isle of Mull, NW Scotland, preserves an ~120 m thick sequence of Palaeogene silicic pyroclastic rocks and collapse breccias. Here we present the first detail
Externí odkaz:
https://doaj.org/article/436590d4d88a4b63948d4829764f1f4f
Autor:
R. Marcela Lira-Beltrán, Lizeth Caballero, Delphine Sourisseau, Gerardo Ruiz Chavarría, Geoffrey A. Lerner
Publikováno v:
Volcanica, Vol 7, Iss 2, Pp 565-585 (2024)
Volcanic eruptions of the directed blast type are characterized by powerful explosions with a significant lateral pyroclastic density current (PDC) component that can travel at speeds above 100 m s–1 and affect hundreds of square kilometers around
Externí odkaz:
https://doaj.org/article/2cf71734c0d7402aa8fadd80b26ff79a
Publikováno v:
Volcanica, Vol 7, Iss 2, Pp 503-524 (2024)
Pyroclastic density currents are complex mixtures of rock, ash and gas and represent significant hazards at many active volcanoes worldwide. Ignimbrites are the deposits of pyroclastic density currents and can be used to record the eruption dynamics
Externí odkaz:
https://doaj.org/article/cbf9d23d77814cb1acebf13a1d48331e
Autor:
Duje Smirčić, Matija Vukovski, Damir Slovenec, Duje Kukoč, Branimir Šegvić, Marija Horvat, Mirko Belak, Tonći Grgasović, Luka Badurina
Publikováno v:
Swiss Journal of Geosciences, Vol 117, Iss 1, Pp 1-24 (2024)
Abstract During the Middle Triassic, intensive volcanic activity took place along the eastern margin of Pangea, including the Greater Adria promontory, due to the Neotethyan oceanization. This resulted in the formation of various volcanic and volcani
Externí odkaz:
https://doaj.org/article/3440aa7d833f4fd0b58faeea135c173e
Akademický článek
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Autor:
Chun Fan
Publikováno v:
Open Geosciences, Vol 16, Iss 1, Pp 209-304 (2024)
A large set of Paleozoic volcaniclastic rocks is exposed in the northwestern margin of the Junggar Basin from the southern part of the Central Asian Orogenic Belt. The Carboniferous volcaniclastic strata in this area have been studied in depth, and a
Externí odkaz:
https://doaj.org/article/1531e91abb9740fa86b172ca4e7cde05
Autor:
Wahyu Widodo, Haryadi Permana, Ernowo Ernowo, Yoseph C.A. Swamidharma, Inu Pinahalan, Andhy Cahyadi, Yudhi Krisnanto
Publikováno v:
Rudarsko-geološko-naftni Zbornik, Vol 39, Iss 5, Pp 121-138 (2024)
Sebuku Island is located at the southeastern tip of Kalimantan Island and has geological similarities with the Bobaris-Meratus complex in distribution pattern and stratigraphic sequence. The pattern of straightness of geological structures between th
Externí odkaz:
https://doaj.org/article/ce5f9b491d7b4a108325a30a9962118e