Application of a variant of the Thellier-Thellier method for paleomagnetic field intensity determination to an analog lunar sample revealed a peak at about 250 C on the partial thermoremanent magnetization (PTRM). Evidence suggests that this can be best explained by a partial self-reversal involving troilite becoming reversely magnetized in the presence of already magnetized intergrown iron. In lunar samples, an additional peak was observed. The results suggest that natural remanent magnetization of lunar samples is in part carried by interacting grains, so that paleointensity determinations on the basis of the assumption of noninteracting grains have to be discarded.
Lunar and Planetary Science Conference Proceedings
- Pub Date:
- April 1976
- Field Strength;
- Lunar Evolution;
- Lunar Magnetic Fields;
- Lunar and Planetary Exploration