Magnetic polarity stratigraphy of Upper Siwalik Sub-Group, Soan Valley, Pakistan: implications for early human occupance of Asia

The results of a detailed paleomagnetic study of a 68 m section of Upper Siwalik sediments in the Soan syncline, northern Pakistan, are presented. A palaeolithic artefact and other pieces of struck quartzite were found in situ in a gritstone/conglomerate horizon near the base of the section. Incremental thermal demagnetization was used to remove later magnetic overprints in these sediments, since alternating field demagnetization was shown to be...