| 南海北部陆缘早侏罗世海平面变化的古盐度记录 |
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| 引用本文： | 许中杰,程日辉,王嘹亮,李飞,张莉.南海北部陆缘早侏罗世海平面变化的古盐度记录[J].沉积学报,2009,27(6):1147-1154. |
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| 作者姓名： | 许中杰 程日辉 王嘹亮 李飞 张莉 |
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| 作者单位： | 吉林大学长春130061 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，《全国油气资源战略选区调查与评价》国家专项 |
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| 摘 要： | 早侏罗世南海北部陆缘粤东地区发生大规模海侵。古盐度的变化记录了海平面的变化。反映古盐度变化的Sr/Ba和B/Ga比值与海平面升降有关，前者为正相关，后者为负相关。本区m曲线（m= MgO/ Al2O3×100）与B/Ga曲线相似，但在幅度方面有差异。结合沉积充填序列、沉积环境、沉积相演变，确定了本区海平面变化经历了两次海侵和一次海退。早侏罗世南海北部陆缘构造背景相对活动，前陆再旋回造山带或前陆隆起成为物源区，海丰地区具有周缘前陆盆地的性质。古盐度记录揭示的海平面变化可能受古特堤斯闭合的影响。
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| 关 键 词： | 南海北部陆缘早侏罗世海丰地区海平面变化古盐度 |
| 收稿时间： | 1900-01-01 |
Paleosalinity Records to Sea Level Change of the Northern Margin of the South China Sea in Early Jurassic |
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| XU Zhong-jie,CHENG Ri-hui,WANG Liao-liang,LI Fei,ZHANG Li.Paleosalinity Records to Sea Level Change of the Northern Margin of the South China Sea in Early Jurassic[J].Acta Sedimentologica Sinica,2009,27(6):1147-1154. |
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| Authors: | XU Zhong-jie CHENG Ri-hui WANG Liao-liang LI Fei ZHANG Li |
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| Institution: | College of Earth Sciences, University, Changchun 130061 |
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| Abstract: | A large-scale transgression occured in early Jurassic in the eastern Guangdong Province,the continental margin of South China Sea.The sea level change is recorded by the variation of paleosalinity.The ratios of Sr/Ba and B/Ga reflecting the paleosalinity changes are coincident with the sea level changes,the former is a positive correlation and the latter is a negative correlation.In this area,the curves of m(m= MgO/ Al2O3 100)values and B/Ga are similar but different in ranges.According to variation of pale... |
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| Keywords: | the continental margin of South China Sea Early Jurassic Haifeng area sea level change paleosalinity |
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