Estimasi Ukuran Bulir Mineral Magnetik pada Batuan Peridotit Berdasarkan Peluruhan Anhysteretic Remanent Magnetization (ARM)
Abstract: A decaying
measurement of Anhysteretic Remanent Magnetization(ARM) has been undertaken to
estimation the grain size of magnetic mineralwhich carries remanent on
peridotite igneous rocks. The samples are taken from Desa Aranio, Kabupaten
Banjar, South Kalimantan. The samples are taken in a cylinder from with the diameter
2.54 cm and 2.2 cm in length by using Drill Model D026-C. The giving, measuring
and decaying process of ARM is done by Molspin AF Demagnetizer, partial
Anhysteretic Remanent Magnetization (pARM), and Minispin Magnetometer. The
estimation of grain size of magnetic mineral is obtained by seeing ARM
intensity decaying curve towards magnetic field shown by the samples of
peridotite igneous rocks. The ARM intensity decaying curve show that the
estimated peridotite rocks in research aredominated by multidomain and the size
are big, whereas the distribution of the grain size is larger than 200 μm.
Penulis: Rina Reida
Kode Jurnal: jpfisikadd090059
