摘要
The Yingfengling section composed of red soil and volcanic rocks can be distinguished into 8 stratigraphic units and 4 red soil-volcanic rock cycles. 64 paleomagnetic-orientated samples were collected from the bottom to the top of the section. Natural remanent magnetization and magnetic susceptibility were firstly measured. All the samples were stepwisely treated with thermal or/and alternating fields. Four clear polarity segments were recorded in the section. Compared with the geo-magnetic polarity scale, the section was formed since the late Olduvai subchron, about 1.37 Ma.B.P.
The Yingfengling section composed of red soil and volcanic rocks can be distinguished into 8 stratigraphic units and 4 red soil-volcanic rock cycles. 64 paleomagnetic-orientated samples were collected from the bottom to the top of the section. Natural remanent magnetization and magnetic susceptibility were firstly measured. All the samples were stepwisely treated with thermal or/and alternating fields. Four clear polarity segments were recorded in the section. Compared with the geo-magnetic polarity scale, the section was formed since the late Olduvai subchron, about 1.37 Ma.B.P.
基金
SNSFproject"Dynamiclinksbetweenpaleo environmentvariationmechanismandglobalchangesinthemonsoonareaofChina"(RatificationNo .:49894170 ) .
关键词
古地磁学
红粘土
火山岩
剩磁学
雷州半岛
red soil-volcanic series
paleomagnetic study
remanent magnetization
magnetic susceptibility
Yingfengling
Leizhou Peninsula
