2024-03-19T02:48:46Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1513092018-07-19T07:45:14Zcom_10261_82com_10261_8col_10261_335
DIGITAL.CSIC
author
Guzmán, Silvina
author
Neri, M.
author
Carniel, R.
author
Martí Molist, Joan
author
Grosse, P.
author
Montero-López, Carolina
author
Geyer, Adelina
funder
Ministerio de Economía y Competitividad (España)
funder
Agencia Nacional de Promoción Científica y Tecnológica (Argentina)
funder
Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina)
2017-06-13T08:00:07Z
2017-06-13T08:00:07Z
2017-05
Terra nova, 29(4): 224–232 (2017)
0954-4879
http://hdl.handle.net/10261/151309
10.1111/ter.12268
1365-3121
http://dx.doi.org/10.13039/501100003329http://dx.doi.org/10.13039/501100003074http://dx.doi.org/10.13039/501100002923
Dykes at the Vicuña Pampa Volcanic Complex, which are mostly basaltic (trachy)-andesite and (trachy)-andesite, are exposed at the base and along the walls of a large depression resulting from intense degradation. Dykes intruding stiff layers (lavas, plugs and necks) are thin, mostly dip >60° and have coherent textures, whereas dykes intruding more compliant materials (breccias and conglomerates) tend to be thicker, have lower dips and have coherent, brecciated or mixed textures (coherent and brecciated textural domains in a single or compound dyke). Single dykes with brecciated and mixed textures are only found intruding near-surface units. Dykes with mixed textures always have sharp contacts between domains. Dykes with sinuous domain contacts and enclaves of one domain inside the other are interpreted as resulting from dyke arrest, partial cooling and reinjection of new magma. Dykes with straight domain contacts are considered to be compound dykes, with a new dyke intruding along the margins of an older, solidified one.
eng
openAccess
Remarkable variability in dyke features at the Vicuña Pampa Volcanic Complex, Southern Central Andes
artículo
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URL
https://digital.csic.es/bitstream/10261/151309/3/Guzman_Terra_Nova_postprint.pdf
File
MD5
3d989ab0d247349095f886d5f3c38f0e
9197830
application/pdf
Guzman_Terra_Nova_postprint.pdf