对杭州附近由第四纪红土、泥岩、石灰岩和花岗岩发育的红壤中磁性矿物进行了研究 .由X -衍射和矿物磁测技术证明四种红壤中的磁性矿物是磁赤铁矿 (γ -Fe2 O3) ,它是红壤磁性的主要贡献者 ,且磁赤铁矿以稳定单畴和超顺磁性颗粒态存在 Magnetic minerals in the red soils developed from Quaternary lateritic, mudstone, limestone and granite near Hangzhou were studied by X - ray diffraction and magnetic measurements. The magnetic minerals in the four red soils were proved to be maghemite (γ-Fe2 O3), which is a major contributor to magnetism in red soils, and that maghemite exists as a stable monodomain and superparamagnetic particulate