Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)

Peat and lake sediment cores from Peninsula Muñoz Gamero in the southernmost Main Andean Cordillera, and also Seno Skyring fjord and Peninsula Brunswick in the Andean foothills, have been investigated to refine the local Holocene tephrochronology. New 14C ages, together with calculated peat growth a...

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Autores principales:	Kilian,Rolf, Hohner,Miriam, Biester,Harald, Wallrabe-Adams,Hans J., Stern,Charles R.
Lenguaje:	English
Publicado:	Servicio Nacional de Geología y Minería (SERNAGEOMIN) 2003
Materias:	Volcanism Holocene Tephra Cordillera de los Andes Mount Burney Patagonia
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082003000100002
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spelling	oai:scielo:S0716-020820030001000022003-10-21Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)Kilian,RolfHohner,MiriamBiester,HaraldWallrabe-Adams,Hans J.Stern,Charles R. Volcanism Holocene Tephra Cordillera de los Andes Mount Burney Patagonia Peat and lake sediment cores from Peninsula Muñoz Gamero in the southernmost Main Andean Cordillera, and also Seno Skyring fjord and Peninsula Brunswick in the Andean foothills, have been investigated to refine the local Holocene tephrochronology. New 14C ages, together with calculated peat growth and sedimentation rates, provide age constraints. The thickest (5-15 cm) tephra layer in the cores resulted from an eruption of the Mount Burney volcano at approximately 4254±120 cal. yr BP. Isopach maps for this eruption indicate deposition of approximately 2.5_3 km³ of tephra, mainly in the forested Andean area southeast of the volcano. Mount Burney had another large Plinian eruption between 9009±17 and 9175±111 cal. yr BP, and also four smaller eruptions during the Holocene. Tephra from large explosive eruptions of the Reclus (>15384±578 cal. yr BP), Hudson (between 7707±185 and 7795±131 cal. yr BP) and Aguilera (<3596±230 cal. yr BP) volcanoes also occur in some of the cores as indicated by the characteristic compositions of their tephra glass, which differ both from each other and also from that of tephra derived from Mount Burney. Significant loss of alkali elements during alteration of the volcanic glass in the tephra layers was observed, especially within acid peat soils, and this may be an important factor in the plant nutrient supply.info:eu-repo/semantics/openAccessServicio Nacional de Geología y Minería (SERNAGEOMIN)Revista geológica de Chile v.30 n.1 20032003-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082003000100002en10.4067/S0716-02082003000100002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Volcanism Holocene Tephra Cordillera de los Andes Mount Burney Patagonia
spellingShingle	Volcanism Holocene Tephra Cordillera de los Andes Mount Burney Patagonia Kilian,Rolf Hohner,Miriam Biester,Harald Wallrabe-Adams,Hans J. Stern,Charles R. Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)
description	Peat and lake sediment cores from Peninsula Muñoz Gamero in the southernmost Main Andean Cordillera, and also Seno Skyring fjord and Peninsula Brunswick in the Andean foothills, have been investigated to refine the local Holocene tephrochronology. New 14C ages, together with calculated peat growth and sedimentation rates, provide age constraints. The thickest (5-15 cm) tephra layer in the cores resulted from an eruption of the Mount Burney volcano at approximately 4254±120 cal. yr BP. Isopach maps for this eruption indicate deposition of approximately 2.5_3 km³ of tephra, mainly in the forested Andean area southeast of the volcano. Mount Burney had another large Plinian eruption between 9009±17 and 9175±111 cal. yr BP, and also four smaller eruptions during the Holocene. Tephra from large explosive eruptions of the Reclus (>15384±578 cal. yr BP), Hudson (between 7707±185 and 7795±131 cal. yr BP) and Aguilera (<3596±230 cal. yr BP) volcanoes also occur in some of the cores as indicated by the characteristic compositions of their tephra glass, which differ both from each other and also from that of tephra derived from Mount Burney. Significant loss of alkali elements during alteration of the volcanic glass in the tephra layers was observed, especially within acid peat soils, and this may be an important factor in the plant nutrient supply.
author	Kilian,Rolf Hohner,Miriam Biester,Harald Wallrabe-Adams,Hans J. Stern,Charles R.
author_facet	Kilian,Rolf Hohner,Miriam Biester,Harald Wallrabe-Adams,Hans J. Stern,Charles R.
author_sort	Kilian,Rolf
title	Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)
title_short	Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)
title_full	Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)
title_fullStr	Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)
title_full_unstemmed	Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)
title_sort	holocene peat and lake sediment tephra record from the southernmost chilean andes (53-55°s)
publisher	Servicio Nacional de Geología y Minería (SERNAGEOMIN)
publishDate	2003
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-02082003000100002
work_keys_str_mv	AT kilianrolf holocenepeatandlakesedimenttephrarecordfromthesouthernmostchileanandes5355s AT hohnermiriam holocenepeatandlakesedimenttephrarecordfromthesouthernmostchileanandes5355s AT biesterharald holocenepeatandlakesedimenttephrarecordfromthesouthernmostchileanandes5355s AT wallrabeadamshansj holocenepeatandlakesedimenttephrarecordfromthesouthernmostchileanandes5355s AT sterncharlesr holocenepeatandlakesedimenttephrarecordfromthesouthernmostchileanandes5355s
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Holocene peat and lake sediment tephra record from the southernmost Chilean Andes (53-55°S)

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