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Okrostsvaridze, Avtandil and Popkhadze, Nino (2016) Megavolcano in the Late Cenozoic Samtckhe-Javakheti Volcanic Province? Lesser Caucasus, Georgia-Turkish Border. In: The 6th Workshop on Collapse Caldera, Hokkaido Japan, 2016, 4-10 სექტემბერი, 2017, იაპონია, ჰოკაიდო.
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POSTER IAVCEI HOKAIDO, 2016.pdf Download (2MB) | Preview |
Abstract
Our detailed investigations in field work, based on physical volcanology, allow us to conclude, that the magmatic center of the Goderzi suite is a huge volcano, which is located in Georgia and territory of Turkey also. One of the caldera structure of this megavolcano is located on Niala Valley (territory of Georgia) (15x 22 km, 2800-2200 m asl.), western part of which is injected by post-volcanic andesitic domes and known as Gumbati mountain (2996 m asl). At present, the Niala Valley caldera partly is covered with quaternary sediments, bounded with andesitic lava flows and open to the eastern. In spite of the fact, that this areal undergoes erosion for about 5 million years, the identification of large caldera circle structures is still possible here. The Vardzia tuffs and ignimbrites flow represents the products of Niala Caldera, flows out and extended more than 35 km, width 2-3 km, to the different directions of the volcano and its thickness varies within of 30-80 m.
| Item Type: | Conference or Workshop Item (Speech) |
|---|---|
| Subjects: | Q Science > QE Geology |
| Divisions: | Faculties/Schools > School of Natural Sciences and Engineering |
| Depositing User: | ავთანდილ ოქროსცვარიძე |
| Date Deposited: | 27 Feb 2017 09:52 |
| Last Modified: | 27 Feb 2017 09:52 |
| URI: | http://eprints.iliauni.edu.ge/id/eprint/6373 |
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