磁性矿物还原成岩作用述评

许多海洋－湖泊环境中的沉积物受到还原成岩作用的影响发生磁性颗粒的溶解和自生现象。根据最近二十多年的研究成果，简要介绍了磁性矿物发生还原作用的基本过程、产物和控制因素，成岩作用对沉积物地球化学和磁学特征的改变，成岩自生亚铁磁性铁硫化物的磁学特征以及成岩作用对古地磁和环境磁学记录的影响。

REDUCTIVE DIAGENESIS OF MAGNETIC MINERALS:A REVIEW

Studies have shown that magnetic minerals deposited in marine and lake sedimentary environments were frequently subjected to reductive diagenesis,extensively leading to the dissolution and authigenic formation of magnetic minerals.Based on the researches of diagenesis in the last two decades,this paper gives a general introduction of the basic diagenetic processes,results and controlling factors,describes the typical geochemical and magnetic characteristics of diagenesis attacked sediments,summarizes the magnetic properties of ferrimagnetic iron sulfide minerals formed during diagenesis,and analyzes the significant influence of diagenesis on the paleomagnetic and environmental magnetic records retained in sediments.