Palaeomagnetic Age of the Borehole No.1 of Dabuxun Lake, Qaidam Basin
E. Derbyshire (Geography Department, Keele University, England) J. Shaw (Geology Deportment, Cardiff Universitry, England) Wang Jingtai (Lanzhou Institute of Glaciology and Geocryology, Academia Sinica )
Sediment samples from a 528 m deep borehole located at about 50 km north of Golmud on the southeastern side of Dabuxun Lake have been used to determine the change in magnetic inclination with depth. Normal polarity Brunhes inclination values are present throughout the section but there are six clear departures from these values, five with negative inclination and one shallow inclination. An attempt has been made to date the core using the magnetic excursions together with C14 and Th230 data.