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前言自生硫化铁(指酸溶解的单硫化铁,其中99％以上是麦基劳矿(Nawite,Fe_(1+x)S)和格雷格矿(greigite,Fe_3S_4)及酸不溶残余硫化铁,后者99％以上为黄铁矿、即FeS_2):广泛存在于海洋沉积物中。随着沉积环境的不同,其分布特征和单硫化铁与残余硫化铁二者的比例关系也不同。在早期的成岩过程中,它与生物、化学、地质等过程有着广泛的联系,所以一向受到地球化学家们的重视。由于多种原因,我国对它在海洋沉积环境中的研究未见有详细的报道。笔者以东海陆架为例,来讨论自生硫化铁在该区的分布特征、成因和控制因素。
Introduction Self-born iron sulfide (referred to as acid-solubilized iron sulfide, of which more than 99% is Nawite (Fe) (1 + x) S) and greigite (Fe3S4) More than 99% are pyrite, ie FeS 2): It is widely found in marine sediments. With the different sedimentary environment, its distribution characteristics and the proportion of single iron sulfide and residual iron sulfide are also different. In the early diagenesis process, it has extensive links with biological, chemical and geological processes and so has always been the focus of geochemists. For a variety of reasons, our country has no detailed reports on its research in marine sedimentary environment. The author takes the East China Sea shelf as an example to discuss the distribution characteristics, causes and controlling factors of self-generated iron sulfide in this area.