Fast Numerically Stable Matrix Algorithms

University Of California-Berkeley, Berkeley CA

Investigators

Abstract

ABSTRACT 0204388 Ming Gu U of Calif - Berkeley The San Andreas Fault zone Observatory at Depth (SAFOD) Pilot Hole will provide an excellent opportunity for exploring the relationship between fault slip and the thermal evolution of the crust by studying core samples from varying depths using two complementary thermochronologic methods. The Pilot Hole, located in Parkfield less than two kilometers from the San Andreas fault will reach a depth of 2.1 km. The borehole will intersect Salinian granitic rocks at a depth of less than 1 km and similar granitic rocks outcrop at the surface within a few kilometers of the Pilot Hole. We will analyze samples from borehole cuttings at depth intervals of 100 - 200 m and from the surface outcrops. We will determine the thermal history of the samples using apatite fission track and U/Th-He thermochronometers.