@article{oai:nipr.repo.nii.ac.jp:00001103,
 author = {Nagata, Takesi},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Dec},
 note = {P(論文), The paleointensity of two eucrites (ALHA77302 and ALHA78040), a ureilite (ALHA77257) and an eucritic unique achondrite (ALHA77005) has been newly estimated by means of a comparison of the AF-demagne-tization characteristics of their NRM with those of their ARM. The upper limit of paleointensity (F_p) is 0.049,0.060,0.089 and 0.010 Oe for ALHA77302,78040,77257 and 77005 respectively. F_p of ALHA77005 may represent the ambient magnetic field when this achondrite was remelted by severe shocks about 1.8 million years ago, whereas F_p-values of the other three achondrites may indicate the paleomagnetic field when these achondrites differentiated about 4.5 billion years ago.},
 pages = {233--242},
 title = {Paleomagnetism of Antarctic Achondrites},
 volume = {17},
 year = {1980}
}