| 南秦岭古生代沉积盆地构造活动-海平面变化与沉积响应 |
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| 引用本文： | 唐永忠,朱迎堂.南秦岭古生代沉积盆地构造活动-海平面变化与沉积响应[J].沉积学报,2007,25(5):653-662. |
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| 作者姓名： | 唐永忠 朱迎堂 |
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| 作者单位： | 陕西地质调查院,西安,710054;成都理工大学,成都,610059 |
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| 摘 要： | 位于扬子地台北部被动边缘的南秦岭镇安、旬阳古生代沉积盆地，发育一套早古生代—中生代一套碳酸盐岩夹细碎屑岩沉积，其沉积建造稳定，岩相清晰，地层层序及沉积体系域发育清楚，海平面变化敏感，是研究海平面变化与沉积响应较理想的地区。通过对区内沉积盆地地层特征及侧向变化分析，初步划分出了10个层序，识别出若干个沉积体系域和层序界面。盆地沉积演化与构造体制、区域性构造运动密切相关，构造活动控制了海平面变化。通过区域地层格架分析和层序地层学研究，可以进一步研究区域构造活动历史，恢复海平面变化细节，建立岩石地层、年代地层格架，从微观上准确了解区域海平面敏感变化，确切刻画古气候、古地理、古环境，从而更好的预测沉积矿产。
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| 关 键 词： | 南秦岭 沉积盆地 构造活动 海平面变化 层序地层分析 |
| 文章编号： | 1000-0550（2007）05-0653-10 |
| 收稿时间： | 2007-01-09 |
| 修稿时间： | 2007-03-01 |
Tectonic Activity-Sea Level Change and Sedimentary Response of Paleozoic Basins in South Qingling Mountains |
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| TANG Yong-zhong,ZHU Ying-tang.Tectonic Activity-Sea Level Change and Sedimentary Response of Paleozoic Basins in South Qingling Mountains[J].Acta Sedimentologica Sinica,2007,25(5):653-662. |
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| Authors: | TANG Yong-zhong ZHU Ying-tang |
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| Institution: | Shannxi Geological Survey, Xi’an 710054 |
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| Abstract: | Located in the passive margin of the north of Yangtze Platform,Zheng An and Xun Yang basins in South Qingling Mountains have developed a series of Early Paleozoic-Mesozoic carbonate rocks containing some fine clastic rocks,which are characteristic of stable deposition,clear lithological facies,stratigraphical sequence and tracts as well as sensitive reflection to sea level change,so this area is an ideal place to study sea level change and its depositional response.On the basis of stratigraphical features and lateral change,10 sequences have been divided as well as some depositional boundary and tracts.The evolution of sedimentary basins has close relationship with tectonic regime,regional tectonic activity,and tectonics controlled sea level change.Through the analysis on regional sequence framework and stratigraphy,we can furthermore study the history of regional tectonic activity and restore the details of sea level change to establish the lithological and chronological stratigraphical framework which is helpful for elucidating the accurate sensitive change of sea level change and describing the paleoclimate,plaeogeography and paleoenvironment as well as predicting depositional mineral resources. |
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| Keywords: | South Qingling Mountains sedimentary basin tectonic activity sea level change sequence stratigraphy |
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