IODP Expedition 320 Magnetic remanence (SRM-longcore)

Magnetic remanence was measured on section halves (and rarely on whole-round sections) using a 2G Enterprises 760R cryogenic magnetometer, first as natural remanent magnetization (NRM) and then after demagnetization steps were performed on the samples by alternating field (AF) demagnetizer coils mounted in-line within the instrument.采用2G Enterprises公司760R型低温磁力仪（cryogenic magnetometer），对岩心分段半块（极少情况下采用完整圆形截面样品）开展磁剩磁测量：首先测定样品的天然剩磁（natural remanent magnetization，NRM），随后通过内嵌于仪器且与仪器同轴安装的交变场（alternating field，AF）退磁线圈对样品实施分步退磁操作，并再次完成磁剩磁测量。