Alkali basalt volcanism along a subduction-related magmatic arc: The case of Puyuhuapi Quaternary volcanic line, Southern Andes (44deg20minS)
Entry ID: 159-96_03

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Summary
Abstract: In Southern Chile, plate configuration is characterized by ridge-ridge-trench
collision in correspondence of Taitao peninsula (Chile triple junction). The
different converging rates of Nazca and Antarctic plates favored the formation
of a forearc sliver (Chiloe block) limited to west by a dextral transcurrent
fault system, Known as Liquine-Ofqui fault system (LOFS). During the Quatenary
time, a ... View entire text
Geographic Coverage
Spatial coordinates   
  N: -42.14   S: -42.22   E: -72.31   W: -72.36

Temporal Coverage
Start Date: 1998-02-01
Stop Date: 1998-05-02
ISO Topic Category
Quality A set of 16 samples from PVC was analyzed for major elements; 8 samples were
selected for trace elements analyses. Whole-rock major elements determination
were carried out by XRF using a Philips 1480 X-ray spectrometer. Na2O and MgO
contents were determined by AAS, and FeO by the titration method. Volatile
components were determined as ignition loss at 1000 deg C on 110 deg C-dried
powders, assuming a total oxidation of Fe2+ into Fe3+. Trace elements were
analyzed by a VG Elemental Plasma Quad 2 Plus Inductively Coupled Plasma
Spectrometer. Analyses of the mineral phases were carried out by a Jeol
JXA-8600 electron microprobe.
Access Constraints Data is available for public access.
Use Constraints Data is available for public use.
Data Set Progress
IN WORK
Originating Center
Data Center
Centro Nacional de Datos Antarticos, Instituto Antartico Chileno, Chile Supplemental Info
Data Center URL: http://www.inach.cl/

Data Center Personnel
Name: RICARDO JANA
Phone: ++56 /61/ 298135
Fax: ++56 /61/ 298149
Email: rjana at inach.cl
Contact Address:
Plaza Munoz Gamero 1055
XII Region
City: Punta Arenas
Country: Chile
Personnel
Role: DIF AUTHOR
Email: djorquer at inach.cl
Contact Address:
Luis Thayer Ojeda 814
Providencia
City: Santiago
Country: Chile
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Publications/References
Gonzalez-Ferran, O., Innocenti, F., Lahsen, A., Manetti, P., Mazzuoli, R.,
Omarini, R. and Tamponi, M., 1996. Alkali basalt volcanism along a subduction
related magmatic arc: The case of Puyuhuapi Quaternary volcanic line, Southern
Andes (44deg20minS). XIII Congreso de Geologia Argentino y III Congreso de
exploracion de Hidrocarburos. Organizado por Asociacion Geologica Argentina e
Instituto Argentiino del Petroleo y del Gas. Actas III: 549-565. Buenos Aires,
13 - 18 de Octubre.
Creation and Review Dates
DIF Creation Date: 2005-03-23
Last DIF Revision Date: 2005-04-27
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