| 冶里－亮甲山组硅岩成因新探 |
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| 引用本文： | 张玉宾.冶里－亮甲山组硅岩成因新探[J].石油勘探与开发,1996(4). |
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| 作者姓名： | 张玉宾 |
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| 作者单位： | 胜利石油管理局地质科学研究院 |
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| 摘 要： | 对系统取心井岩心样品的岩石学研究表明，下奥陶统亮甲山组结晶白云岩中的硅岩并非交代成因，而是后期充填在由怀远运动（亮甲山期末）形成的淋滤孔洞中的充填物，因为在硅岩内，具有明显的沉积特征和孔洞充填特征。以化学方式为主的充填作用，是造成这套白云岩地层储集性变差的主要原因。
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| 关 键 词： | 华北地台，早古生代，岩溶作用，硅质岩，成因 |
A NEW STUDY ON THE ORIGIN OF SILICALITE IN YELI AND LIANGJIASHAN FORMATION OF LOWER ORDOVICIAN |
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| Zhang Yubin.A NEW STUDY ON THE ORIGIN OF SILICALITE IN YELI AND LIANGJIASHAN FORMATION OF LOWER ORDOVICIAN[J].Petroleum Exploration and Development,1996(4). |
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| Authors: | Zhang Yubin |
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| Abstract: | Based on the petrological study on core samples, the author discovered that in Yeli and Liangjiashan Formation of Lower Ordovician, there are distinct characteristics of pore-space filled with silicalite which may not result from the replacement, but the materials filling lately the leached pore-space formed by Huaiyuan movement, because the silicalite has obvious sedimentation and pore-spaces filling characters. This kind of filling dominated by chemical depositing is the main reason making the dolomite reservoir poor in quality. |
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| Keywords: | Huabei platform Early paleozoic era Karstification Silica rock Origin |
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