Microzonation of the Linares, Northeast Mexico area, based on geology and shear-wave velocity measurements

ABSTRACT We determined the velocity structure of S-wave (VS), P-wave (VP) and the average shear velocity to 30 meters depth (Vs30) at 30 locations in the Linares, Nuevo León area. V s and V P measurements were made from seismic refraction profiles. Four different lithologic units were defined in the upper 30 m: silts with 338 m/s and 221 m/s for V P and V s respectively, which correspond to the lowest velocities measured in the area; Quaternary deposits with 957 m/s and 559 m/s for VP and VS; Tertiary conglomerates with 2471 m/s and 1220 m/s for V P and Vs; and shales of the Upper Cretaceous Mendez Formation with 3195 m/s and 2149 m/s for V P and Vs. Sites of class C (Vs30 < 760 m/s) are dominant in the area, corresponding to maximum thicknesses of less than 16 m of soft sediments.

Bibliographic Details

Main Authors:	Montalvo-Arrieta,J. C., Quintanilla,Y., Tamez,A., Meneses,M., Ramos,L., Masuch,D.
Format:	Digital revista
Language:	English
Published:	Universidad Nacional Autónoma de México, Instituto de Geofísica 2005
Online Access:	http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0016-71692005000400331
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