Mineral magnetic parameters, including magnetic susceptibility, frequency dependent susceptibility, isothermal remanent magnetization, anhysteretic remanent magnetization, temperature-dependence of susceptibility, were measured on quartzite and surface soil derived from quartzite. The results in combination with the microscope observation indicated little magnetic mineral in quartzite but a few magnetite, maghemite, iron oxyhydroxides in surface soil. The magnetic grains were mainly superparamagnetic (SP) and stable single domain (SSD). Maghemite is secondary mineral formed in the process of pedogenesis. The magnetic enhancement of surface soil showed that quartzite magnetism influenced little the magnetism of surface soil, but pedogenesis influenced it obviously. The magnetic susceptibility and maghemite content of surface soil can reflect process of pedogenesis.
李 勇,李海燕,白凌燕,秦炎福,官邦贵,吕跃凤.发育于石英岩之上的表土磁学性质及其环境磁学意义[J].土壤,2009,41(1):60-66. LI Yong, LI Hai-yan, BAI Ling-yan, QIN Yan-fu, GUAN Bang-gui, LV Yue-feng. Magnetic Property and Environmental Magnetism Significance of Surface Soil Derived from Quartzite[J]. Soils,2009,41(1):60-66复制