| 三塘湖盆地马朗凹陷卡拉岗组火山岩岩性及岩相特征研究 |
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| 引用本文： | 梁浩,苟红光,王志矿,崔娥,孟旺才,张志更.三塘湖盆地马朗凹陷卡拉岗组火山岩岩性及岩相特征研究[J].沉积学报,2011,29(6):1156-1163. |
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| 作者姓名： | 梁浩 苟红光 王志矿 崔娥 孟旺才 张志更 |
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| 作者单位： | 1. 中国地质大学资源学院能源地质工程,武汉430074／中国石油吐哈油田分公司勘探开发研究院,新疆哈密839009
2. 中国石油吐哈油田分公司勘探开发研究院,新疆哈密,839009 |
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| 基金项目： | 中国石油天然气股份有限公司科技研发项目(编号:2008B-01)资助 |
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| 摘 要： | 火山岩地层的对比和划分是研究其岩性、岩相及变化规律的前提和基础。根据测井、地震资料结合孢粉组合分析,确定三塘湖盆地马朗凹陷卡拉岗组火山岩在研究区具有北厚南薄和东厚西薄的特征。孢粉组合表现为裸子植物花粉明显优势于蕨类植物孢子,孢粉以科达粉、弗氏粉、单束细肋粉、冷杉多肋粉组合为特征,其中科达粉含量最多（25.3%～54.3...
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| 关 键 词： | 马朗凹陷 卡拉岗组 火山岩岩相 |
Characteristics of Lithology and Lithofacies of Kalagang Volcanic Rocks in Malang Depression,Santanghu Basin |
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| LIANG Hao,GOU Hong-guang,WANG Zhi-kuang,CUI E,MENG Wang-cai,ZHANG Zhi-geng.Characteristics of Lithology and Lithofacies of Kalagang Volcanic Rocks in Malang Depression,Santanghu Basin[J].Acta Sedimentologica Sinica,2011,29(6):1156-1163. |
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| Authors: | LIANG Hao GOU Hong-guang WANG Zhi-kuang CUI E MENG Wang-cai ZHANG Zhi-geng |
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| Institution: | 1.College of Resources,China University of Geosciences,Wuhan 430074; 2.Turpan-Hami Oilfield Company,China Petroleum Exploration and Development Institute,Hami,Xinjiang 839009) |
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| Abstract: | Comparison and classification of volcanic rocks are the premise and foundation of their lithology research, lithofacies and variation. According to log data, seismic data and pollen analysis, we found that the Kalagang volcanic rocks of Malang depression in Santanghu Basin were thick in the north and east, thin in the south and westareas. The pollen assemblage showed that Gymnosperm pollen had a clear advantage in fern spores and comprised of Genus Cordaitina(Samoilovichi) Hart,Genus Florinites Sehof, WilSonet Bentall, Genus Protohaploxypinus(Samoilovichi) Hart, Genus Striatoabieites(Sedova) Hartpollen. The content of Genus Cordaitina(Samoilovichi) Hart was up to 25.3~54.3%. Compared the log response of Kalagang volcanic rocks and Sedimentary rocks, there performed low natural gamma, low acoustic time, low compensation neutrons, high density and high resistance. The natural gamma value of Kalagang volcanic rocks was lower than Harjiawu Formation, while the resistance was higher. The lithology was mainly mafic neutral basalt and andesite, and minor of the tuff, tuffite, volcanic breccia, and so on. Kalagang volcanic rocks of Malang depression can be divided into outbreak phase, overflow phase and volcanic sediment facies. The volcanic activity mainly occurred as a relatively quiet overflow phase, followed by strong eruption phase, and locally developed volcanic sediment facies. |
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| Keywords: | Malang depression Kalagang Formation volcanic lithofacies |
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