三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素

刘春莲

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三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素

刘春莲

文章导航 > 沉积学报 > 2006 > 24(1): 75-80

刘春莲. 三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素[J]. 沉积学报, 2006, 24(1): 75-80.

引用本文:

刘春莲. 三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素[J]. 沉积学报, 2006, 24(1): 75-80.

LIU Chunlian. Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong[J]. Acta Sedimentologica Sinica, 2006, 24(1): 75-80.

Citation:

LIU Chunlian. Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong[J]. Acta Sedimentologica Sinica, 2006, 24(1): 75-80.

刘春莲. 三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素[J]. 沉积学报, 2006, 24(1): 75-80.

引用本文:

刘春莲. 三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素[J]. 沉积学报, 2006, 24(1): 75-80.

LIU Chunlian. Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong[J]. Acta Sedimentologica Sinica, 2006, 24(1): 75-80.

Citation:

LIU Chunlian. Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong[J]. Acta Sedimentologica Sinica, 2006, 24(1): 75-80.

三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素

刘春莲

中山大学地球科学系广州 510275

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通讯作者:
刘春莲

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Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong

LIU Chunlian

Department of Earth Sciences, Sun YatSen (Zhongshan) University, Guangzhou 510275

More Information

Corresponding author: LIU Chunlian

摘要

摘要: 黄铁矿是富有机质沉积的特征矿物。根据TOC/S、TOC/DOP、S/Fe关系以及STOCFe多重线性回归分析结果对三水盆地古近系
〖HT5”,6”〗土〖KG-*3〗布〖HT5”SS〗心组红岗段黑色页岩中沉积黄铁矿的形成及其控制因素进行了分析。土布心组红岗段黑色页岩的黄铁矿有成岩黄铁矿和同生黄铁矿两种成因组分。红岗段下部（亚段A）有机碳含量普遍较低，底部水体以弱氧化条件为主，硫酸盐还原作用发生于沉积物/水界面以下，黄铁矿为成岩成因，其形成主要受有机质的限制。红岗段中上部（亚段B和C）的沉积条件变化频繁，其有机碳含量变化幅度大。富有机质（TOC>4%）岩层形成于缺氧的底部水体条件下。水体中可含H2S，碎屑铁矿物在埋藏之前即与之在水体中反应形成同生黄铁矿。这一过程不受有机质的限制，而是受活性铁与H2S接触时间的限制。同时，由于大量淡水输入导致硫酸盐浓度的降低，从而对硫化物形成有一定的限制作用。对于低有机质（TOC<4%）样品，黄铁矿由同生和成岩组分组成。其中以成岩黄铁矿为主，其形成过程主要受有机质限制，而同生黄铁矿受铁矿物与H2S接触时间的限制。
- 黄铁矿形成 /
- 限制因素 /
- 黑色页岩 /
- 土布心组 /
- 古近系 /
- 三水盆地
Abstract: Analyses of TOC/S, TOC/DOP, S/Fe relationships and STOCFe multiple linear regression were carried out to determine limiting factors for pyrite formation in black shales of the Honggang Member (Lower Eocene Buxin Formation) in the Sanshui Basin. Submember A, showing lower organic carbon and higher iron contents than the other submembers, deposited in oxygenated bottom waters. Bacterial sulfate reduction took place below the sedimentwater interface, and pyrite was formed diagenetically and organic carbon was limited. Submember B and C are characterized by large variations in organic carbon content. Organicrich (TOC>4%) rocks deposited under anoxic environments, in which H2S presented above the sediment water interface as well as within the sediments. Pyrite was formed syngenetically and confined by the duration during which iron detritus reacted with H2S in the water column and by the availability of dissolved sulfate that decreased due to an increasing input of fresh waters. For organicpoor (TOC<4%) sediments, pyrite was of syngenetic and diagenetic. Organic carbonlimited diagenetic pyrite added to the earlier formed syngenetic pyrite, which was controlled by the time that iron minerals remained in contact with H2S in anoxic waters.
- pyrite formation /
- controls /
- black shale /
- Buxin Formation /
- Lower Eocene /
- Sanshui Basin

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[1]	李娟, 陈雷, 胡月, 计玉冰, 卢畅, 董建华, 谭秀成, 杨莉, 杨琳, 陈鑫. 滇黔北昭通地区晚奥陶世—早志留世黑色页岩地球化学特征及其地质意义 . 沉积学报, 2024, 42(3): 738-756. doi: 10.14027/j.issn.1000-0550.2024.038
[2]	王兴, 田景春, 林小兵, 陈威振, 易定鑫. 渝东地区五峰组—龙马溪组沉积环境及有机质主控因素分析 . 沉积学报, 2024, 42(1): 309-323. doi: 10.14027/j.issn.1000-0550.2022.069
[3]	古恒, 王剑, 韦恒叶, 付修根. 四川盆地城口地区下寒武统水井沱组有机质富集控制因素 . 沉积学报, 2024, 42(3): 1073-1091. doi: 10.14027/j.issn.1000-0550.2022.091
[4]	符芳亮, 潘松圻, 张国生, 赵正福, 王伟, 沈雅婷, 荆振华. 黑色页岩中的黄铁矿形态特征组合及古环境意义——以四川盆地W207井下寒武统筇竹寺组为例 . 沉积学报, 2023, (): -. doi: 10.14027/j.issn.1000-0550.2023.123
[5]	张景军, 李凯强, 王群会, 王志坤, 韩江波. 渤海湾盆地南堡凹陷古近系重力流沉积特征及模式 . 沉积学报, 2017, 35(6): 1241-1253. doi: 10.14027/j.cnki.cjxb.2017.06.015
[6]	宋明水, 向奎, 张宇, 蔡攀, 刘建磊, 杨仁超. 泥质重力流沉积研究进展及其页岩油气地质意义——以东营凹陷古近系沙河街组三段为例 . 沉积学报, 2017, 35(4): 740-751. doi: 10.14027/j.cnki.cjxb.2017.04.008
[7]	李俊武, 代廷勇, 李凤杰, 杨承锦, 杨豫川. 柴达木盆地鄂博梁地区古近系沉积物源方向分析 . 沉积学报, 2015, 33(4): 649-658. doi: 10.14027/j.cnki.cjxb.2015.04.003
[8]	李智超, 李文厚, 赖绍聪, 李永项, 李玉宏, 尚婷. 渭河盆地古近系细屑岩的古盐度分析 . 沉积学报, 2015, 33(3): 480-485. doi: 10.14027/j.cnki.cjxb.2015.03.006
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三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素

刘春莲

中山大学地球科学系广州 510275

通讯作者: 刘春莲

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2006-02-10

关键词:

古近系 /

摘要: 黄铁矿是富有机质沉积的特征矿物。根据TOC/S、TOC/DOP、S/Fe关系以及STOCFe多重线性回归分析结果对三水盆地古近系
〖HT5”,6”〗土〖KG-*3〗布〖HT5”SS〗心组红岗段黑色页岩中沉积黄铁矿的形成及其控制因素进行了分析。土布心组红岗段黑色页岩的黄铁矿有成岩黄铁矿和同生黄铁矿两种成因组分。红岗段下部（亚段A）有机碳含量普遍较低，底部水体以弱氧化条件为主，硫酸盐还原作用发生于沉积物/水界面以下，黄铁矿为成岩成因，其形成主要受有机质的限制。红岗段中上部（亚段B和C）的沉积条件变化频繁，其有机碳含量变化幅度大。富有机质（TOC>4%）岩层形成于缺氧的底部水体条件下。水体中可含H2S，碎屑铁矿物在埋藏之前即与之在水体中反应形成同生黄铁矿。这一过程不受有机质的限制，而是受活性铁与H2S接触时间的限制。同时，由于大量淡水输入导致硫酸盐浓度的降低，从而对硫化物形成有一定的限制作用。对于低有机质（TOC<4%）样品，黄铁矿由同生和成岩组分组成。其中以成岩黄铁矿为主，其形成过程主要受有机质限制，而同生黄铁矿受铁矿物与H2S接触时间的限制。

English Abstract

Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong

LIU Chunlian

Department of Earth Sciences, Sun YatSen (Zhongshan) University, Guangzhou 510275

Corresponding author: LIU Chunlian

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2006-02-10

Keywords:

Abstract: Analyses of TOC/S, TOC/DOP, S/Fe relationships and STOCFe multiple linear regression were carried out to determine limiting factors for pyrite formation in black shales of the Honggang Member (Lower Eocene Buxin Formation) in the Sanshui Basin. Submember A, showing lower organic carbon and higher iron contents than the other submembers, deposited in oxygenated bottom waters. Bacterial sulfate reduction took place below the sedimentwater interface, and pyrite was formed diagenetically and organic carbon was limited. Submember B and C are characterized by large variations in organic carbon content. Organicrich (TOC>4%) rocks deposited under anoxic environments, in which H2S presented above the sediment water interface as well as within the sediments. Pyrite was formed syngenetically and confined by the duration during which iron detritus reacted with H2S in the water column and by the availability of dissolved sulfate that decreased due to an increasing input of fresh waters. For organicpoor (TOC<4%) sediments, pyrite was of syngenetic and diagenetic. Organic carbonlimited diagenetic pyrite added to the earlier formed syngenetic pyrite, which was controlled by the time that iron minerals remained in contact with H2S in anoxic waters.

刘春莲. 三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素[J]. 沉积学报, 2006, 24(1): 75-80.

引用本文:

刘春莲. 三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素[J]. 沉积学报, 2006, 24(1): 75-80.

LIU Chunlian. Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong[J]. Acta Sedimentologica Sinica, 2006, 24(1): 75-80.

Citation:

LIU Chunlian. Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong[J]. Acta Sedimentologica Sinica, 2006, 24(1): 75-80.

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三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素

通讯作者:
刘春莲

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Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong

Corresponding author: LIU Chunlian

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三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素

中山大学地球科学系广州 510275

通讯作者: 刘春莲

English Abstract

Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong

Department of Earth Sciences, Sun YatSen (Zhongshan) University, Guangzhou 510275

Corresponding author: LIU Chunlian

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三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素

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Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong

Corresponding author: LIU Chunlian

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三水盆地古近系土布心组黑色页岩中黄铁矿的形成及其控制因素

中山大学地球科学系 广州 510275

通讯作者: 刘春莲

English Abstract

Pyrite Formation and Its Controls in Black Shales of the Buxin Formation (Lower Eocene) from the Sanshui Basin, Guangdong

Department of Earth Sciences, Sun YatSen (Zhongshan) University, Guangzhou 510275

Corresponding author: LIU Chunlian

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刘春莲

中山大学地球科学系广州 510275