Data Report: Rock Magnetic Properties of Hydrothermally Altered Sediments from Middle Valley

Abstract

Rock magnetic studies on sediment samples from Ocean Drilling Program Sites 855 and 857, Middle Valley, Juan de Fuca Ridge, were carried out during Leg 139. Results of natural remanent magnetization intensity and susceptibility show that the concentration of magnetic minerals is high. The thermomagnetic analyses and the thermal demagnetization of composite isothermal remanent magnetizations (Lowrie, 1990) were also conducted.