| 南黄海沉积物中自生黄铁矿的形态标型研究 |
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| 引用本文： | 初凤友,陈丽蓉,申顺喜,石学法.南黄海沉积物中自生黄铁矿的形态标型研究[J].海洋与湖沼,1994,25(5):461-467. |
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| 作者姓名： | 初凤友 陈丽蓉 申顺喜 石学法 |
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| 作者单位： | 中国科学院海洋研究所!青岛，266071，中国科学院海洋研究所!青岛，266071，中国科学院海洋研究所!青岛，266071，中国科学院海洋研究所!青岛，266071 |
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| 基金项目： | 国家自然科学基金!49376263，中国科学院院长基金 |
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| 摘 要： | 得１９８９年采于南黄海的样品，通过实体显微镜、反应显微镜和电子显微镜对自生黄铁矿的集合体形和晶体形态进行研究，结合前人成果，对现代海底沉积物中自生黄铁矿集合体进行形态分类和成因－形态分类，在此基础上讨论其特征形态的成因及标型意义。研究表明，自生黄铁矿集合体形态可以分为聚莓、单莓和细粒３种，其中前二者可作为沉积物中自生黄铁矿和层控或沉积成因矿床黄铁矿集合体形态标型；成因－形态分类将黄铁矿集合体分为两
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| 关 键 词： | 南黄海 沉积物 黄铁矿 形态标型 |
| 收稿时间： | 1993/12/20 0:00:00 |
| 修稿时间： | 1994/4/15 0:00:00 |
MORPHOLOGICAL FEATURES OF AUTHIGENIC PYRITE FROM SOUTH YELLOW SEA SEDIMENTS |
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| Chu Fengyou,Chen Lirong,Shen Shunxi and Shi Xuefa.MORPHOLOGICAL FEATURES OF AUTHIGENIC PYRITE FROM SOUTH YELLOW SEA SEDIMENTS[J].Oceanologia Et Limnologia Sinica,1994,25(5):461-467. |
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| Authors: | Chu Fengyou Chen Lirong Shen Shunxi and Shi Xuefa |
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| Institution: | Institute of Oceanology Academia Sinica, Qingdao 266071;Institute of Oceanology Academia Sinica, Qingdao 266071;Institute of Oceanology Academia Sinica, Qingdao 266071;Institute of Oceanology Academia Sinica, Qingdao 266071 |
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| Abstract: | Aggregate and crystal morphology of authigenic pyrite collected in 1989 from the South Yellow Sea were studied with a binocular microscope, reflecting microscope and an electron microscope. The author combined the research results of others in his classification of the authigenic pyrite aggregate of the recent sediments by morphology and morphology-genesis. The genesis-morphology and typomorphic significance of pyrite are discussed. Aggregate morphology of pyrite can be classified into three types, i.e., aggregate framboids, single framboids and tiny grain types.The former two types can be represented by aggregate typomorphic features of authigenic pyrite from sedimellts and sedimentary deposit. According to genesismorphology, pyrite aggregate can be classified into two types, filling predominates in type I, filling and replacement in type II. Evolution of the three types of pyrite aggregate in a certain way can reflect tbe forination condition and deutervariation.The geological background of themineral formation in the sediments is local reducing environment in an oxidized water body. The layer member of formation is surface and subsurface. Type I was formed under weak alkaline-alkaline condition. Type II was formed under weak acid-weak alkaline conditions. Characteristic morphology of pyrite framboids is the result of random accumulation of sediment in the early diagenetic period. |
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| Keywords: | Sediment from south Yellow Sea Authigenic pyrite Morphological features |
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