| 安徽南部下扬子地区寒武系露头层序地层初步研究 |
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| 引用本文： | 夏军.安徽南部下扬子地区寒武系露头层序地层初步研究[J].安徽地质,1995(1). |
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| 作者姓名： | 夏军 |
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| 作者单位： | 安徽区调所 |
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| 摘 要： | 露头层序地层研究表明，安徽下杨子地区寒武纪可识别出两个Ⅰ类层序及三个Ⅱ类层序，早寒武世的三个Ⅱ类层序由于同沉积断裂影响陆架边缘体系域不甚发育；中、晚寒武世的两个Ⅰ类层序由低水位体系域、海侵体系域及高水位体系域构成。由沉积体系域演化作出的海平面变化曲线不同于Ｖａｉｌ的寒武纪全球海平面变化Ⅱ级旋回，表明了皖南下扬子海盆的海平面升降受扬子板块、华夏板块的影响远大于全球海平面变化幅度。
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| 关 键 词： | 体系域 层序地层 海平面变化 寒武纪 皖南 |
RESEARCH OF THE CAMBRIAN SEQUENCE STRATIGRAPHY OF THE LOWER YANGTZE SEA BASIN IN SOUTHERN ANHUI |
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| Xia Jun.RESEARCH OF THE CAMBRIAN SEQUENCE STRATIGRAPHY OF THE LOWER YANGTZE SEA BASIN IN SOUTHERN ANHUI[J].Geology of Anhui,1995(1). |
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| Authors: | Xia Jun |
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| Abstract: | The research of the exposed sequence stratigraphy shows that the Lower Yangtze sea basin of the Cambrian inAnhui may be divided into two lst-type sequences and three 2nd-type sequences during the early Cambrian lack the shelfmargin system tract, but during the Middle and Late Cambrian,the two lst-type sequences include lowstand system tract,transessive system tract and highstand system tract. The characters of the curve of the sea-level change according to theevolution of the sendimetary system tract are quite different from those of the 2nd-order cycles of the Vail's global sea-level change.This showes that the Lower Yangtze sea level change in southern Anhui is much more than that of the globalsea-level,due to the effect of Yangtze and Huaxia plates. |
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| Keywords: | System tract Sequence stratigraphy Sea-level change Cambrian Southern Anhui |
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