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Aira Caldera is almost rectangular in shape related to local faulting and was created in a series of large scale of pyroclastic surges that contributed to the Shirasu-Daichi pyroclastic plateau with the last now dated to 29,428 to 30,148 years calibrated before present [7] [1] [2] although earlier work had the date at ~22,000 years ago with ...
A major three phase eruption of the Aira Caldera formed in the first phase the Osumi pumice fall, had a second phase Tsumaya pyroclastic flow and in the third Ito eruption phase produced the widely distributed Aira-Tn tephra that has been dated at 29,428 to 30,148 years calibrated before present.
The continent of Europe comprises a large part of the Palearctic ecozone, with many unique biomes and ecoregions. Biogeographically, Europe is tied closely to Siberia, commonly known as the Euro-Siberian region. The European Environmental Agency (EEA) divides Europe into a total of eleven terrestrial biogeographical regions and seven regional ...
Though such enormous eruptions are extremely infrequent, both volcanoes have remained active with much smaller eruptions in historic times, with Sakurajima in the bay and the Kirishima Mountains north of the bay forming active vents associated with the Aira volcano magma sources, and the smaller 4000-year-old Ikeda Caldera with Mount Kaimon at ...
A volcano that once existed in the northern part of Kagoshima Bay caused an eruption called the Great Aira Eruption about 25,000 years ago, forming the Aira Caldera. Aira City is located on the northwest side of this caldera, on the somma, and there is a stratum called Shirasu, which originated from pyroclastic flows that flowed out during a ...
Immediately adjacent to the north of the caldera is the Sakurajima volcano in Aira Caldera and further away to the south along what has been termed the Kagoshima Graben [1] is the Kikai Caldera. [8] This alignment was first described by Tadaiti Matumoto in the 1940s. [ 7 ]
The geology of Europe is varied and complex, and gives rise to the wide variety of landscapes found across the continent, from the Scottish Highlands to the rolling plains of Hungary. Europe's most significant feature is the dichotomy between highland and mountainous Southern Europe and a vast, partially underwater, northern plain ranging from ...