| 我国南方早古生代聚煤过程中硫的生物地球化学行为及成矿效应 |
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| 引用本文： | 姚素平,丁海,胡凯,焦堃.我国南方早古生代聚煤过程中硫的生物地球化学行为及成矿效应[J].地球科学进展,2010,25(2):174-183. |
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| 作者姓名： | 姚素平 丁海 胡凯 焦堃 |
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| 作者单位： | 南京大学地球科学与工程学院,江苏,南京,210093 |
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| 基金项目： | 国家自然科学基金项目“南方早古生代聚煤过程中硫的生物地球化学行为及金属元素富集与成矿机制”(编号:40973051);;“华南高碳质页岩中硫的生物地球化学循环及成矿效应”(编号:40638042)资助 |
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| 摘 要： | 我国早古生代煤主要蕴藏在煤炭资源贫乏的南方各省,因坚硬似岩石又称之为石煤,储量极为丰富,仅浙江至广西就分布有长约1 600 km的石煤矿,石煤中含有或富集了多种金属元素,目前已发现的伴生元素达60多种,如钒、钼、磷、钡、镍、铀、金、银等,局部可形成工业矿床而作为某种矿物资源单独开采,是我国有待系统开发的潜在的多矿产资源。研究表明:石煤形成于以菌藻类为主的生物堆积和浅表海或古陆边缘的海相还原环境,含有大量的菌藻类(如蓝绿藻和褐藻)、古孢子、海绵骨针及一些分类尚不明确的原始动、植物等生物化石,具有低碳、高灰、高硫的特点,海相沉积环境和藻类对硫的机械富集与捕集是造成含石煤岩系中硫含量高的主要因素。石煤中富集的金属元素绝大多数是亲硫元素,早期聚煤作用过程是石煤中伴生元素富集的重要阶段,多金属硫化物是石煤中金属元素最重要的赋存形式,主要有硫磺、黄铁矿、黄铜矿、闪锌矿、方硫镍矿、辉镍矿、辉砷镍矿、针镍矿、含镍黄铁矿和硫钼矿等,大量实验及同位素研究资料揭示了细菌还原硫酸盐作用是导致大规模金属硫化物矿化最可能的生物营力,也是石煤和金属硫化物矿床主要的成煤和成矿机制,硫的生物地球化学行为直接影响了金属元素的富集与赋存状态,但早...
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| 关 键 词： | 早古生代 石煤 金属硫化物 生物地球化学循环 微生物成矿作用 |
Biogeochemical Characteristic and Mineralization Process of Sulfur during the Coal Accumulation Process in Early Paleozoic of Southern China |
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| YAO Suping,DING Hai,HU Kai,JIAO Kun.Biogeochemical Characteristic and Mineralization Process of Sulfur during the Coal Accumulation Process in Early Paleozoic of Southern China[J].Advance in Earth Sciences,2010,25(2):174-183. |
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| Authors: | YAO Suping DING Hai HU Kai JIAO Kun |
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| Institution: | School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China |
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| Abstract: | The early Paleozoic coals were well-developed in southern provinces of China poor in coal resources.It was also known as "stone coal" due to being hard like rock.Stone coal was widely spread throughout southern China.Though the stone coal bed is discontinuous,the horizon can be recognized in a band of transitional shelf zone sediments stretching 1 600 km only across southern China from Zhejiang Province to Guangxi Province.There contains and sometimes enriches a variety of metal elements in stone coal.It ha... |
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| Keywords: | Early Palaeozoic Stone coal Metal sulfides Biogeochemical cycling Microbial metallogenesis |
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