Fast Numerically Stable Matrix Algorithms

圣安地列斯断裂带深度观测站（SAFOD）先导孔将利用两种互补的热年代学方法研究不同深度的岩心样品，为探索断层滑动与地壳热演化之间的关系提供一个绝佳的机会。Pilot洞位于帕克菲尔德，距离圣安德烈亚斯断层不到两公里，深度为2.1公里。该钻孔将在不到1公里的深度与盐系花岗质岩石相交，并在距先导孔几公里的地面上露出类似的花岗质岩石。我们将分析100 - 200米深度的钻孔岩屑和地表露头的样品。我们将使用磷灰石裂变径迹和U/Th-He温度计来确定样品的热历史。

ABSTRACT0204388Ming GuU of Calif - BerkeleyThe San Andreas Fault zone Observatory at Depth (SAFOD) Pilot Hole will provide anexcellent opportunity for exploring the relationship between fault slip and the thermal evolutionof the crust by studying core samples from varying depths using two complementarythermochronologic methods. The Pilot Hole, located in Parkfield less than two kilometers fromthe San Andreas fault will reach a depth of 2.1 km. The borehole will intersect Salinian graniticrocks at a depth of less than 1 km and similar granitic rocks outcrop at the surface within a fewkilometers of the Pilot Hole. We will analyze samples from borehole cuttings at depth intervalsof 100 - 200 m and from the surface outcrops. We will determine the thermal history of thesamples using apatite fission track and U/Th-He thermochronometers.