山东长山列岛黄土沉积磁组构特征及意义

本文对长山列岛的砣矾岛离石黄土和马兰黄土，及其以北大钛岛和以南南长山岛的马兰黄土等的沉积磁组构作了对比和分析，证明研究区离石黄土不是纯风尘沉积，至少本文所研究的剖面段不是风尘沉积，而是洪坡积，其沉积物质可能主要是当地红土风化壳物质被流水搬运来的；马兰黄土虽是风尘沉积，但物源与我国内陆黄土有明显区别，前者主要是低海面时期被风从附近搬运来的。

Magnetic Fabric Features and Significace of Changshan Archipelago Loess in Shandong Province,China

The Middle Pleistocent loes and the Late Pleistocene loess at changshan archipelago were previouslyseen as eolian deposit, which were deposited by north-west monsoon. Comparative analyses on magneticfabric features of them show that the Middle Pleistocene loess belongs to proluvium of talus whose mate-rials prtially came from local crust of weathering and were partially brought to here from the vicinity bywind; the late pleistocene loess belongs to eoilan deposit whose materials were brought to here from ex-posed sea floor nearby by wind. In the Late Pleistocene epoch, surface wind field changed with topogra-phy, and wind dircction may be different in different places.