广西宁明组植物化石中黄铁矿及其沉积意义

马福军; 吴媛欣; 刘松; 孙柏年; 闫德飞; 张凤太; 王秋军

doi:10.3969/j.issn.1000-0550.2018.006

ISSN 1000-0550 CN 62-1038/P

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广西宁明组植物化石中黄铁矿及其沉积意义

马福军, 吴媛欣, 刘松, 孙柏年, 闫德飞, 张凤太, 王秋军

文章导航 > 沉积学报 > 2018 > 36(1): 33-41

马福军, 吴媛欣, 刘松, 孙柏年, 闫德飞, 张凤太, 王秋军. 广西宁明组植物化石中黄铁矿及其沉积意义[J]. 沉积学报, 2018, 36(1): 33-41. doi: 10.3969/j.issn.1000-0550.2018.006

引用本文:

MA FuJun, WU YuanXin, LIU Song, SUN BaiNian, YAN DeiFei, ZHANG FengTai, WANG QiuJun. Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance[J]. Acta Sedimentologica Sinica, 2018, 36(1): 33-41. doi: 10.3969/j.issn.1000-0550.2018.006

Citation:

MA FuJun, WU YuanXin, LIU Song, SUN BaiNian, YAN DeiFei, ZHANG FengTai, WANG QiuJun. Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance[J]. Acta Sedimentologica Sinica, 2018, 36(1): 33-41. doi: 10.3969/j.issn.1000-0550.2018.006

引用本文:

Citation:

MA FuJun, WU YuanXin, LIU Song, SUN BaiNian, YAN DeiFei, ZHANG FengTai, WANG QiuJun. Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance[J]. Acta Sedimentologica Sinica, 2018, 36(1): 33-41. doi: 10.3969/j.issn.1000-0550.2018.006

广西宁明组植物化石中黄铁矿及其沉积意义

doi: 10.3969/j.issn.1000-0550.2018.006

1.
贵州师范学院地理与旅游学院&贵州省地理国情监测重点实验室, 贵阳 550018;
2.
黔东南苗族侗族自治州地质公园管理局, 贵州凯里 556000;
3.
兰州大学地质科学与矿产资源学院, 兰州 730000;
4.
贵州大学资源与环境工程学院&贵州省古生物研究中心, 贵阳 550025

基金项目: 国家自然科学基金项目（41172022，41272026）；贵州省科技厅科技计划项目（黔科合J字[2015]2121号）；贵州大学引进人才科研项目（贵大人基合字（2015）35号）；贵州师范学院科研基金项目（2015BS014）

详细信息

作者简介:
马福军,女,1986年出生,博士,副教授,古生物学与地层学,E-mail:mafujun9016@163.com

通讯作者:
张凤太,男,教授,E-mail:zhfthero@126.com

中图分类号: Q914;P534.61⁺4

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Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance

1.
School of Geography and Tourism & Guizhou Provincial Key Laboratory of Geographic State Monitoring, Guizhou Education University, Guiyang 550018, China;
2.
Geopark Administration of Qiandongnan Miao and Dong Autonomous Prefecture, Kaili, Guizhou, 556000, China;
3.
School of Earth Sciences, Lanzhou University, Lanzhou 730000, China;
4.
Guizhou Research Centre for Palaeontology & College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China

Funds: National Natural Science Foundation of China, No. 41172022, 41272026;Science and Technology Fund of Guizhou Province, No. QianKHJ[2015]2121;Research Fund for the Introduced Talents of Guizhou University, No.201535;Research Fund of Guizhou Education University, No. 2015BS014

摘要

摘要: 对化石中的黄铁矿进行研究，有助于明确生物的化石化过程以及期间的沉积微环境。利用光学显微镜和扫描电镜，对广西宁明组植物化石中保存的黄铁矿进行了分析，发现离散型单晶和成群的莓状体共同保存。单晶绝大多数为无规则至球状体，晶棱不明显，表面可见凹点；少数为八面体，晶棱明显，表面光滑；单晶直径为0.79~1.58 μm；莓状体为圆球状，粒径为7.23~14.95 μm，S/Fe原子个数比的均值为1.54。莓状体的粒径大小和变化幅度均处于低值段，其S/Fe原子个数比值小于2，结果均说明当时植物体上、下表皮间为一种贫氧的水体环境，并在短时间内形成了莓状体。植物化石上、下表皮间由于未保存组织结构，而被大量的、近似层状分布的黄铁矿单晶和莓状体充填，结果支持了化石内莓状体形成与有机质降解之间存在着必然联系。
- 黄铁矿 /
- 植物化石 /
- 渐新世 /
- 沉积微环境 /
- 宁明组
Abstract: The study of pyrites preserved in fossils can provide useful information on the process of organic fossilization and the depositional microcondition of these fossils. Using the light and scanning electron microscopes, we observed pyritization tissues preserved in plant fossils from the Ningming Formation, Guangxi. Pyrite textures are preserved in two forms, which are dissolved crystals and framboidal clusters. Most of crystals are of irregular to spherulitic shapes with pits on the surface and indistinct edge, whereas few are of octahedron shapes with smooth surface and distinct edge. The size of crystals ranges from 0.79-1.58 μm. Pyrite framboids are densely packed. They are spheroidal in shape and 7.23-14.95 μm in diameter. The individual crystal units of pyrite framboids have an S/Fe ratio of 0.16-2.06, with the mean value of 1.54. The ratio of S/Fe is less than the standard value 2 and thus shows a relative sulfur deficiency. The sizes of these pyrite framboids are small and vary within a narrow range. Their mean diameters fall generally within the dysoxic field. The size distribution and S/Fe ratio of pyrite framboids indicate that the intervals between the abaxial and adaxial cuticles of plant detritus had a dysoxic water microcondition during the formation of pyrites. And in this microcondition, framboids were formed rapidly in a very restrictive time span. Numerous pyrite crystals and framboids infilling the intervals between the cuticles of plant detritus also support the conclusion that the formation of pyrite framboids is in association with the decay of organic matter.
- pyrite /
- plant fossil /
- Oligocene /
- depositional microcondition /
- Ningming Formation

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[1]	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
[2]	陈杨, 金鑫, 郎咸国, 李滨兵. 鄂尔多斯盆地早侏罗世Toarcian大洋缺氧事件时期湖泊硫循环及其地质意义 . 沉积学报, 2023, (): -. doi: 10.14027/j.issn.1000-0550.2023.112
[3]	吴冬, 邓虎成. 黏土沉积微结构特征及其沉积环境【中深层复杂油气储层研究】 . 沉积学报, 2023, (): -. doi: 10.14027/j.issn.1000-0550.2023.073
[4]	常西玲, 郭进京, 常璐璐, 吴彦旺, 徐梦婧. 西秦岭北缘渐新世砾岩沉积特征及沉积环境 . 沉积学报, 2023, 41(5): 1495-1511. doi: 10.14027/j.issn.1000-0550.2022.019
[5]	李森, 朱如凯, 崔景伟, 罗忠, 焦航, 柳涵. 鄂尔多斯盆地长7段细粒沉积岩特征与古环境——以铜川地区瑶页1井为例 . 沉积学报, 2020, 38(3): 554-570. doi: 10.14027/j.issn.1000-0550.2019.062
[6]	刘喜停, 李安春, 马志鑫, 董江, 张凯棣, 徐方建, 王厚杰. 沉积过程对自生黄铁矿硫同位素的约束 . 沉积学报, 2020, 38(1): 124-137. doi: 10.14027/j.issn.1000-0550.2019.073
[7]	王秋军, 郑军, 孙柏年, 马福军, 王振, 王万梅. 广西渐新世宁明组三种植物碳同位素与古气候分析 . 沉积学报, 2020, 38(2): 358-366. doi: 10.14027/j.issn.1000-0550.2019.019
[8]	赵迪斐, 郭英海, 朱炎铭, Geoff Wang, 刘静, 崇璇, 张敬霞. 龙马溪组页岩黄铁矿微观赋孔特征及地质意义 . 沉积学报, 2018, 36(5): 864-876. doi: 10.14027/j.issn.1000-0550.2018.077
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[10]	肖良, 漆亚玲, 马文忠, 李相传, 郭俊锋, 孙楠, 姚肖永. 吐哈盆地北缘中侏罗世植物化石稳定碳同位素的古环境意义 . 沉积学报, 2017, 35(3): 489-498. doi: 10.14027/j.cnki.cjxb.2017.03.007
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广西宁明组植物化石中黄铁矿及其沉积意义

doi: 10.3969/j.issn.1000-0550.2018.006

1. 贵州师范学院地理与旅游学院&贵州省地理国情监测重点实验室, 贵阳 550018;

2. 黔东南苗族侗族自治州地质公园管理局, 贵州凯里 556000;

3. 兰州大学地质科学与矿产资源学院, 兰州 730000;

4. 贵州大学资源与环境工程学院&贵州省古生物研究中心, 贵阳 550025

作者简介:
马福军,女,1986年出生,博士,副教授,古生物学与地层学,E-mail:mafujun9016@163.com

通讯作者: 张凤太,男,教授,E-mail:zhfthero@126.com

收稿日期: 2017-01-03
修回日期: 2017-02-19
刊出日期: 2018-02-10

中图分类号: Q914;P534.61⁺4

关键词:

黄铁矿 /

植物化石 /

渐新世 /

沉积微环境 /

宁明组

摘要: 对化石中的黄铁矿进行研究，有助于明确生物的化石化过程以及期间的沉积微环境。利用光学显微镜和扫描电镜，对广西宁明组植物化石中保存的黄铁矿进行了分析，发现离散型单晶和成群的莓状体共同保存。单晶绝大多数为无规则至球状体，晶棱不明显，表面可见凹点；少数为八面体，晶棱明显，表面光滑；单晶直径为0.79~1.58 μm；莓状体为圆球状，粒径为7.23~14.95 μm，S/Fe原子个数比的均值为1.54。莓状体的粒径大小和变化幅度均处于低值段，其S/Fe原子个数比值小于2，结果均说明当时植物体上、下表皮间为一种贫氧的水体环境，并在短时间内形成了莓状体。植物化石上、下表皮间由于未保存组织结构，而被大量的、近似层状分布的黄铁矿单晶和莓状体充填，结果支持了化石内莓状体形成与有机质降解之间存在着必然联系。

English Abstract

Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance

1. School of Geography and Tourism & Guizhou Provincial Key Laboratory of Geographic State Monitoring, Guizhou Education University, Guiyang 550018, China;

2. Geopark Administration of Qiandongnan Miao and Dong Autonomous Prefecture, Kaili, Guizhou, 556000, China;

3. School of Earth Sciences, Lanzhou University, Lanzhou 730000, China;

4. Guizhou Research Centre for Palaeontology & College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China

Received Date: 2017-01-03
Rev Recd Date: 2017-02-19
Publish Date: 2018-02-10

Keywords:

Abstract: The study of pyrites preserved in fossils can provide useful information on the process of organic fossilization and the depositional microcondition of these fossils. Using the light and scanning electron microscopes, we observed pyritization tissues preserved in plant fossils from the Ningming Formation, Guangxi. Pyrite textures are preserved in two forms, which are dissolved crystals and framboidal clusters. Most of crystals are of irregular to spherulitic shapes with pits on the surface and indistinct edge, whereas few are of octahedron shapes with smooth surface and distinct edge. The size of crystals ranges from 0.79-1.58 μm. Pyrite framboids are densely packed. They are spheroidal in shape and 7.23-14.95 μm in diameter. The individual crystal units of pyrite framboids have an S/Fe ratio of 0.16-2.06, with the mean value of 1.54. The ratio of S/Fe is less than the standard value 2 and thus shows a relative sulfur deficiency. The sizes of these pyrite framboids are small and vary within a narrow range. Their mean diameters fall generally within the dysoxic field. The size distribution and S/Fe ratio of pyrite framboids indicate that the intervals between the abaxial and adaxial cuticles of plant detritus had a dysoxic water microcondition during the formation of pyrites. And in this microcondition, framboids were formed rapidly in a very restrictive time span. Numerous pyrite crystals and framboids infilling the intervals between the cuticles of plant detritus also support the conclusion that the formation of pyrite framboids is in association with the decay of organic matter.

引用本文:

Citation:

MA FuJun, WU YuanXin, LIU Song, SUN BaiNian, YAN DeiFei, ZHANG FengTai, WANG QiuJun. Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance[J]. Acta Sedimentologica Sinica, 2018, 36(1): 33-41. doi: 10.3969/j.issn.1000-0550.2018.006

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广西宁明组植物化石中黄铁矿及其沉积意义

doi: 10.3969/j.issn.1000-0550.2018.006

作者简介:
马福军,女,1986年出生,博士,副教授,古生物学与地层学,E-mail:mafujun9016@163.com

通讯作者:
张凤太,男,教授,E-mail:zhfthero@126.com

计量

Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance

计量

目录

广西宁明组植物化石中黄铁矿及其沉积意义

doi: 10.3969/j.issn.1000-0550.2018.006

作者简介:
马福军,女,1986年出生,博士,副教授,古生物学与地层学,E-mail:mafujun9016@163.com

通讯作者: 张凤太,男,教授,E-mail:zhfthero@126.com

English Abstract

Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance

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广西宁明组植物化石中黄铁矿及其沉积意义

doi: 10.3969/j.issn.1000-0550.2018.006

作者简介: 马福军,女,1986年出生,博士,副教授,古生物学与地层学,E-mail:mafujun9016@163.com

通讯作者: 张凤太,男,教授,E-mail:zhfthero@126.com

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Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance

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出版历程

目录

广西宁明组植物化石中黄铁矿及其沉积意义

doi: 10.3969/j.issn.1000-0550.2018.006

作者简介: 马福军,女,1986年出生,博士,副教授,古生物学与地层学,E-mail:mafujun9016@163.com

通讯作者: 张凤太,男,教授,E-mail:zhfthero@126.com

English Abstract

Pyrites in the Plant Fossils from the Ningming Formation, Guangxi, and Their Depositional Significance

全文HTML

目录

友情链接

期刊在线

联系我们

作者简介:
马福军,女,1986年出生,博士,副教授,古生物学与地层学,E-mail:mafujun9016@163.com

通讯作者:
张凤太,男,教授,E-mail:zhfthero@126.com

作者简介:
马福军,女,1986年出生,博士,副教授,古生物学与地层学,E-mail:mafujun9016@163.com