Please use this identifier to cite or link to this item:
Authors: Mazzarini, F.* 
Fornaciai, A.* 
Bistacchi, A.* 
Pasquarè, F. A.* 
Title: Fissural volcanism, polygenetic volcanic fields, and crustal thickness in the Payen Volcanic Complex on the central Andes foreland (Mendoza, Argentina)
Journal: Geochem. Geophys. Geosyst. 
Series/Report no.: 9/9(2008)
Publisher: AGU
Issue Date: 18-Sep-2008
DOI: 10.1029/2008GC002037
Keywords: volcanic field
crustal shortening
vent distibution
Subject Classification04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics 
Abstract: Shield volcanoes, caldera-bearing stratovolcanoes, and monogenetic cones compose the large fissural Payen Volcanic Complex, located in the Andes foreland between latitude 35°S and 38°S. The late Pliocene-Pleistocene and recent volcanic activity along E-W trending eruptive fissures produced basaltic lavas showing a within-plate geochemical signature. The spatial distribution of fractures and monogenetic vents is characterized by self-similar clustering with well defined power law distributions. Vents have average spacing of 1.27 km and fractal exponent D = 1.33 defined in the range 0.7–49.3 km. The fractal exponent of fractures is 1.62 in the range 1.5–48.1 km. The upper cutoffs of fractures and vent fractal distributions (about 48–49 km) scale to the crustal thickness in the area, as derived from geophysical data. This analysis determines fractured media (crust) thickness associated with basaltic retroarc eruptions. We propose that the Payen Volcanic Complex was and is still active under an E-W crustal shortening regime.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat Existing users please Login
G3_Mazzarini et al_2008.pdf1.04 MBAdobe PDF
Show full item record

Citations 50

checked on Feb 7, 2021

Page view(s)

checked on Sep 25, 2022


checked on Sep 25, 2022

Google ScholarTM