| 陕南柞水石瓮子上泥盆统滑塌沉积及其地质意义 |
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| 引用本文： | 崔海峰.陕南柞水石瓮子上泥盆统滑塌沉积及其地质意义[J].高校地质学报,2003,9(1):63-71. |
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| 作者姓名： | 崔海峰 |
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| 作者单位： | 西北大学,地质学系,陕西,西安,710069 |
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| 摘 要： | 泥盆纪是秦岭构造与古地理格局发生重大变革的时期。秦岭的泥盆系主要分布在南秦岭。资料表明，南秦岭泥盆系不是在统一的盆地中形成的，而是被古陆分隔的几个裂陷盆地的沉积产物。柞水石瓮子地处镇安盆地北缘，该处滑塌块体和斜坡砾岩广泛发育，物源为沿山阳－凤镇断裂向南作大规模逆冲推覆而被掩盖消失的小磨岭古陆，其形成受早古生代南秦岭区域抬升、全球海平面下降以及区内山阳－凤镇断裂和镇安－板岩镇断裂强烈活动的控制。区域性同造山陆块隆升与全球海平面下降造成了南秦岭晚古生代与早古生代地层之间区域性的不整合，一南秦岭在继续向北俯冲的同时，又沿南缘的勉略－巴山断裂带发生扩张，其内部也因拉张作用形成裂陷与块断隆起相间的古地理格局。南秦岭区域性隆起和裂陷可能与加里东运动和勉略有限洋盆的打开相关联。
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| 关 键 词： | 泥盆系 滑塌沉积 不整合界面 秦岭造山带 古地理 |
| 文章编号： | 1006-7493(2003)01-63-09 |
| 修稿时间： | 2002年9月12日 |
Upper Devonian Slump Deposition in Shiwengzi of Zhashui County,South Shanxi Province and Its Geological Significance |
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| CUI Hai-feng.Upper Devonian Slump Deposition in Shiwengzi of Zhashui County,South Shanxi Province and Its Geological Significance[J].Geological Journal of China Universities,2003,9(1):63-71. |
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| Authors: | CUI Hai-feng |
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| Abstract: | Upper Devonian slump deposition is well developed in Zhashui county of southern Shanxi province and is particularly well exposed in the Shiwengzi area. The slump deposition is composed of terrigenous fine-grain clastic rocks, carbonate rocks, bog lime, siltite and boulder breccia limestone. The source area of deposits was located in the north of Shiwengzi. Formation of the slump deposition was primarily controlled by regmagenesis, palaeogeographic framework as well as the source area of deposits. The widely existed unconformable contact between the Early and the Late Paleozoic groups in the southern Qinling further suggests that the southern Qinling had been uplifted wehen the northern Qinling was suffering from the uplifting in the Daledonian orogeny period. Until the Late Devonian, the southern Qinling had been under the control of regmagenesis, which was probably related to the opening of mianlue finite ocean basin. |
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| Keywords: | Southern Qinling Devonian slump deposition unconformable contact |
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