publication . Article . Other literature type . 2013

Geoquímica de tefras de volcanes Cuaternarios de la Península Antártica

Kraus,Stefan; Kurbatov,Andrei; Yates,Martin;
Open Access English
  • Published: 28 Jan 2013
  • Publisher: Servicio Nacional de Geología y Minería (SERNAGEOMIN)
Abstract
In the northern Antarctic Peninsula area, at least 12 Late Plelstocene-Holocene volcanic centers could be potential sources of tephra layers in the region. We present unique geochemical fingerprints for ten of these volcanoes using major, trace, rare earth element, and isotope data from 95 samples of tephra and other eruption products. The volcanoes have predominantly basaltic and basaltic andesitic compositions. The Nb/Y ratio proves useful to distinguish between volcanic centers located on the eastern (Larsen Rift) and those situated on the western side (Bransfield Rift) of the Antarctic Peninsula. In addition, the Sr/Nb ratio (for samples with SiO2 <63 wt%), ...
Subjects
free text keywords: Late Pleistocene, Holocene, Explosive volcanism, Tephra, Source volcano identification, Geochemical fingerprint, Antarctic Peninsula, Bransfield Rift, Larsen Rift, Pleistoceno Tardío, Holoceno, Volcanismo explosivo, Tefra, Volcán de origen, Huella geoquímica, Península Antártica, Rift de Bransfield, Rift de Larsen, Stratigraphy, Palaeontology, Geology, Geochemistry and Petrology, Volcanic glass, Rift, Basalt, Geomorphology, Andesite, Ice core, Volcano, geography.geographical_feature_category, geography, Quaternary
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