Crustal Heterogeneity in the Basin and Range,
Abstract
We are investigating the fine-scale structure of the Earth's crust in order to understand its influence on high frequency (0.5-30 Hz) regional wave propagation. We have developed geologically based stochastic models of crustal heterogeneity for a number of different tectonic provinces and crustal levels. Here we have focused on examining geologic maps from extended terranes, and seismic data from the northern and southern Basin and Range. We have developed two different deterministic/stochastic velocity models which produce synthetic seismograms showing many of the reflectivity patterns and crustal events (Pg, PmP, Sg, SmS) observed in Basin and Range near-vertical and wide-angle seismic data. We also have developed several ways to measure the lateral heterogeneity scale length from unstacked seismic data, and have tested them on synthetic data with promising results.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 14, 1995
- Accession Number
- ADP204481
Entities
People
- A. Levander
- L. M. La Flame
- S. P. Larkin
- S. Pullammanapallil
Organizations
- University of Texas at Austin