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古地理学报  2021, Vol. 23 Issue (3): 625-638    10.7605/gdlxb.2021.03.032
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贵州开阳龙水地区震旦系洋水组沉积特征及生物成磷作用*
吴文明1,2,3, 杨瑞东1, 刘建中3,4, 王泽鹏2,3, 罗朝坤1, 叶太平5, 冯康宁1, 杨光海1, 汪龙波1, 刘松2, 王大福2, 黄毅2, 潘启权2, 张丞2
1 贵州大学资源与环境工程学院,贵州贵阳 550025;
2 贵州省地质矿产勘查开发局105地质大队,贵州贵阳 550018;
3 自然资源部基岩区矿产资源勘查工程技术创新中心,贵州贵阳 550081;
4 贵州省地质矿产勘查开发局,贵州贵阳 550004;
5 贵州省地质矿产中心实验室,贵州贵阳 550018
Sedimentary characteristics and biophosphorization of the Sinian Yangshui Formation in Longshui, Kaiyang, Guizhou Province
Wu Wen-Ming1,2,3, Yang Rui-Dong1, Liu Jian-Zhong3,4, Wang Ze-Peng2,3, Luo Chao-Kun1, Ye Tai-Ping5, Feng Kang-Ning1, Yang Guang-Hai1, Wang Long-Bo1, Liu Song2, Wang Da-Fu2, Huang Yi2, Pan Qi-Quan2, Zhang Cheng2
1 College of Resource and Environmental Engineering,Guizhou University,Guiyang 550025,China;
2 Geological Brigade 105,Bureau of Geology and Mineral Exploration and Development of Guizhou Province,Guiyang 550018,China;
3 Innovation Center of Orel Resources Exploration Technology in the Region of Bedrock, Ministry of Natural Resources of People’s Republic of China,Guiyang 550081,China;
4 Bureau of Geology and Mineral Exploration and Development of Guizhou Province,Guiyang 550004,China;
5 Guizhou Central Laboratory of Geology and Mineral Resources,Guiyang 550018,China
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摘要 

贵州开阳磷矿以其厚而富的磷矿石资源备受关注。对开阳龙水地区含磷岩系(洋水组)剖面进行地层学、岩石学和沉积学研究,并讨论其沉积环境和成磷作用。区内含磷岩系岩性组合为黏土岩—白云岩—碎屑状磷块岩—硅质岩—泥晶磷块岩—叠层石磷块岩。龙水地区在震旦纪陡山沱期整体为靠近古陆边缘的滨岸潮坪沉积环境,并经历了2次海侵—海退。其沉积环境由初期的无障壁海滩转变为晚期的潮坪环境,表明陡山沱期古海洋处于较为动荡的环境,海平面升降频繁。富含生物化石的致密状泥晶磷块岩、圆柱状叠层石磷块岩和磷质生物团粒,均属于原生磷块岩。三者磷酸盐含量极高,属于高品位磷块岩,其形成环境可能是弱酸性至弱碱性的浅海陆棚。生物与高品位磷块岩的密切关系说明生物在高品位磷块岩形成过程中起重要作用。其形成具有3个必要条件: 海水富磷,生物大量繁殖,有利于生物繁殖及磷酸盐结晶的沉积环境。

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作者相关文章
吴文明
杨瑞东
刘建中
王泽鹏
罗朝坤
叶太平
冯康宁
杨光海
汪龙波
刘松
王大福
黄毅
潘启权
张丞
关键词 开阳震旦系生物磷块岩泥晶磷块岩沉积环境生物成磷作用    
Abstract

The Kaiyang phosphate mine has attracted much attention due to its thick and rich phosphate ore resources. In this paper,stratigraphy,petrology and sedimentology are studied for the phosphorous-bearing Yangshui Formation in Longshui,Kaiyang,and the sedimentary environment and phosphorus formation are discussed. The lithologic assemblages of the phosphorous-bearing rock systems in the area are clay rock-dolomite-clastic phosphate rock-siliceous rock-micritic phosphate rock-stromatolite phosphate rock. In the Doushantuo age,the Longshui area was a coastal tidal flat close to the old landmass,and experienced transgression-regression twice. The sedimentary environment of the Doushantuo age changed from the barrier-free beach in the early stage to the tidal flat in the late stage,indicating a relatively dynamic environment with frequent sea-level fluctuations. The dense micritic phosphate rock,cylindrical stromatolite and phosphate biological aggregates rich in biological fossils belong to the original phosphate rock. The phosphate content of the three lithofacies is high,belonging to the high grade phosphate block rock. The depositional environment was likely a low-energy subtidal zone with medium-acidity to weak alkalinity. The close relationship between organisms and high grade phosphate rock suggests that organisms played an important role in the formation of high grade phosphate rock. Its formation has three prerequisite conditions: seawater rich in phosphorus,biological mass reproduction and conducive to biological reproduction and phosphate crystal environments.

Key wordsKaiyang    Sinian    biophosphorites    micritic phosphorite    sedimentary environment    biomineralization   
收稿日期: 2020-06-14     
ZTFLH: P588.24+4  
基金资助:

*国家自然科学基金项目(编号: U1812402,41890841)、贵州省地质矿产勘查开发局地质科研项目(黔地矿办发[2016]10号和11号)、贵州省科技厅项目(黔科合平台人才[2018]5613)、中国地质调查局项目(编号: 121201004000150017-77,121201004000160901-34)联合资助

通讯作者: 杨瑞东,男,1963年生,教授,博士生导师,主要从事矿床学及地球化学研究。E-mail: rdyang@gzu.edu.cn。   
作者简介: 吴文明,男,1984年生,博士研究生,矿床学及地球化学专业。E-mail: 272180889@qq.com。
引用本文:   
吴文明,杨瑞东,刘建中等. 贵州开阳龙水地区震旦系洋水组沉积特征及生物成磷作用*[J]. 古地理学报, 2021, 23(3): 625-638.
Wu Wen-Ming,Yang Rui-Dong,Liu Jian-Zhong et al. Sedimentary characteristics and biophosphorization of the Sinian Yangshui Formation in Longshui, Kaiyang, Guizhou Province[J]. JOPC, 2021, 23(3): 625-638.
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http://journal09.magtechjournal.com/gdlxb/CN/10.7605/gdlxb.2021.03.032     或     http://journal09.magtechjournal.com/gdlxb/CN/Y2021/V23/I3/625
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