| Autor: |
A. Cisneros de León, A. K. Schmitt, S. Kutterolf, J. C. Schindlbeck‐Belo, W. Hernández, K. W. W. Sims, J. Garrison, L. B. Kant, B. Weber, K.‐L. Wang, H.‐Y. Lee, R. B. Trumbull |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Geochemistry, Geophysics, Geosystems, Vol 22, Iss 5, Pp n/a-n/a (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1525-2027 |
| DOI: |
10.1029/2020GC009507 |
| Popis: |
Abstract The Tierra Blanca (TB) eruptive suite comprises the last four major eruptions of Ilopango caldera in El Salvador (≤45 ka), including the youngest Tierra Blanca Joven eruption (TBJ; ∼106 km3): the most voluminous event during the Holocene in Central America. Despite the protracted and productive history of explosive silicic eruptions at Ilopango caldera, many aspects regarding the longevity and the prevailing physicochemical conditions of the underlying magmatic system remain unknown. Zircon 238U‐230Th geochronology of the TB suite (TBJ, TB2, TB3, and TB4) reveals a continuous and overlapping crystallization history among individual eruptions, suggesting persistent melt presence in thermally and compositionally distinct magma reservoirs over the last ca. 80 kyr. The longevity of zircon is in contrast to previously determined crystallization timescales of |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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