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| 贵州瓮安地区早寒武世含磷岩系有机地球化学特征 | |
| 引用本文： | 林丽,周玉华,付修根,朱利东,庞艳春,马叶情,任才云.贵州瓮安地区早寒武世含磷岩系有机地球化学特征[J].矿物岩石,2010,30(1). |
| 作者姓名： | 林丽 周玉华 付修根 朱利东 庞艳春 马叶情 任才云 |
| 作者单位： | 1. 成都理工大学沉积研究院,四川,成都,610059 2. 贵州瓮福磷矿,贵州,福泉,550508 3. 中国地质调查局成都地质矿产研究所,四川,成都,610082 4. 甘肃工业职业技术学院,甘肃,天水,741025 |
| 基金项目： | 国家自然科学基金(40472013,40743016);;教育部“高等学校博士学科点专项科研基金”(20070616014);;贵州瓮福大信北斗山磷矿项目;;中国石油化工海相油气勘探前瞻性项目(G0800-06-ZS-319) |
| 摘 要： | 贵州瓮安水银山的下寒武统底部的磷块岩的生物标志物以及单体烃碳同位素分析表明,正构烷烃以nC17和nC27为优势,无奇偶优势;Pr/Ph为0.95,显示弱的植烷优势;萜烷丰度顺序为五环三萜烷三环萜烷四环萜烷;规则甾烷呈不对称的"V"字形分布,表现为C29C27C28的分布特征。正构烷烃的单体碳同位素值随碳数增加的曲线变化略显平缓,变化范围较窄(-31.13‰～-33.14‰)。这些生物标志物和单体烃碳同位素的特征表明,贵州瓮安水银山磷块岩中生物母源主要是低等的水生藻类的输入,高含量伽玛蜡烷和三环萜烷以及Ts/(Ts+Tm)比值为0.37(0.5)的特征表明深部温盐流上涌是形成这套磷块岩的主要原因。 |
| 关 键 词： | 生物标志物 单体烃碳同位素 上升流 早寒武世牛蹄塘组 贵州瓮安 |
ORGANIC GEOCHEMISTRY OF ROCK SERIES BEARING PHOSPHOR IN EARLY CAMBRIAN IN WENG'AN,GUIZHOU PROVINCE |
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| LIN Li,ZHOU Yu-hua,FU Xiu-gen,ZHU Li-dong,PANG Yan-chun,MA Ye-qing,REN Cai-yun.ORGANIC GEOCHEMISTRY OF ROCK SERIES BEARING PHOSPHOR IN EARLY CAMBRIAN IN WENG''AN,GUIZHOU PROVINCE[J].Journal of Mineralogy and Petrology,2010,30(1). | |
| Authors: | LIN Li ZHOU Yu-hua FU Xiu-gen ZHU Li-dong PANG Yan-chun MA Ye-qing REN Cai-yun |
| Abstract: | By means of GC-MS,a lot of biomarkers of n-alkanes,isoprenoid,teranes and terpanes were detected from phosphorite occurred in the bottom of the l Niutitang Formation of Early Cambrian,in the Weng'an area of Guizhou Province.The n-alkanes of phosphorite showed carbon molecular components with highest peaks of nC17 and nC27,without odd-even carbon dominance.The ratio of pristine/phytane of 0.95 indicated that the sample possessed phytane dominance.Terpanes distribution patterns of samples were pentayclic terp... |
| Keywords: | biomarkers carbon isotope of individual hydrocarbons upwelling Early Cambrian Niutitang Formation Weng'an in Guizhou Province |
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