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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003384naa a2200337 4500
001oai:DiVA.org:su-71148
003SwePub
008120126s2011 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-711482 URI
0247 a https://doi.org/10.1016/j.quaint.2011.05.0292 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Watt, Sebastian F. L.4 aut
2451 0a Holocene tephrochronology of the Hualaihue region (Andean southern volcanic zone, similar to 42 degrees S), southern Chile
264 1b Elsevier BV,c 2011
338 a print2 rdacarrier
500 a authorCount :7
520 a Late Glacial and Holocene soils and sediments in southern Chile contain an important record of explosive volcanic activity since the end of the last glaciation, and have considerable potential for the development of a regional tephrostratigraphical framework. This paper reports the discovery of several new tephra deposits from the Hualaihue region (similar to 42 degrees S) of southern Chile. Eruption sizes, constrained from field observations, and ages, constrained by 25 new radiocarbon dates, show that the volcanoes of the Hualaihue peninsula have had relatively few explosive, tephra-generating eruptions during the Holocene. An eruption of Apagado deposited similar to 1 km(3) of bedded basaltic scoria at similar to 2.6 calibrated (cal) ka BP, and Hornopiren produced a similar, but volumetrically-smaller unit at similar to 5.7 cal ka BR Activity at Yate over the same time period has been predominantly characterised by lava production, although small explosive eruptions, the products of which span a range of compositions, have also occurred, including one at similar to 0.9 cal ka BR The northern part of the regional tephra sequence is dominated by andesitic pumice fall deposits derived from Calbuco volcano. These include deposits from several eruptions during a 3500-year-long period at the start of the Holocene, as well as two large explosive eruptions in the past 2000 years. A distinctive rhyolitic tephra layer that is interbedded with the locally derived tephra sequence is the Cha1 unit, from Chaiten volcano, 108 km south of Hornopiren. This rhyolitic pumice deposit, dated at similar to 9.75 cal ka BP, is the largest volumetrically of those described here, with a volume of 3.5 km(3). This new tephrostratigraphy covers a region whose volcanic history was previously very little known, and contributes to a regional record of large explosive eruptions that now spans a 500 km-long segment of the southern Andean arc, between Calbuco and Hudson volcanoes.
7001 a Pyle, David M.4 aut
7001 a Naranjo, Jose A.4 aut
7001 a Rosqvist, Gunhildu Stockholms universitet,Institutionen för naturgeografi och kvartärgeologi (INK)4 aut0 (Swepub:su)ninis
7001 a Mella, Mauricio4 aut
7001 a Mather, Tamsin A.4 aut
7001 a Moreno, Hugo4 aut
7102 a Stockholms universitetb Institutionen för naturgeografi och kvartärgeologi (INK)4 org
7730 t Quaternary Internationald : Elsevier BVg 246, s. 324-343q 246<324-343x 1040-6182x 1873-4553
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-71148
8564 8u https://doi.org/10.1016/j.quaint.2011.05.029

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