Rl. Mackie et al., A MAGNETOTELLURIC INVESTIGATION OF THE SAN-ANDREAS FAULT AT CARRIZO PLAIN, CALIFORNIA, Geophysical research letters, 24(15), 1997, pp. 1847-1850
High quality, wide-band magnetotelluric data, were collected along two
profiles crossing the San Andreas fault at Carrizo Plain, California
for crustal imaging as part of the San Andreas Deep Drilling Project.
Two-dimensional inversions of the data indicate that the upper crustal
part of the San Andreas fault does not appear here as an anomalously
conductive zone. Additionally, a broad resistive zone under the Temblo
r Mountains (east of the fault) suggests resistive crystalline or meta
morphic rocks may be present here as opposed to the more conducting Fr
anciscan assemblage, contradicting the generally-accepted geologic mod
el.