| 江陵剖面沉积物的粒度特征及其古气候意义 |
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| 引用本文： | 王秋良,李长安,谢远云,马永法.江陵剖面沉积物的粒度特征及其古气候意义[J].中国地质,2006,33(6):1406-1410. |
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| 作者姓名： | 王秋良 李长安 谢远云 马永法 |
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| 作者单位： | 1. 中国地质大学地球科学学院,湖北,武汉,430074
2. 哈尔滨师范大学地理系,黑龙江,哈尔滨,150080 |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 通过对江汉平原江陵剖面高分辨率采样，利用激光粒度仪对沉积物粒度进行测试，分析了粒度的组成及其参数特征，结合孢粉资料和岩性特征，探讨了粒度在该区的古气候意义。结果表明，降水量较大的湿润气候条件下沉积物的粗颗粒组分明显增多；而降水量相对较少的干旱气候条件下沉积物的粗颗粒组分相对减少。通过与邻区对比．江汉平原江陵剖面沉积物粒度所揭示的该区近9000aB．P．以来的古气候变化与国内相邻区域其他指标的研究结果相一致。
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| 关 键 词： | 江陵剖面 粒度特征 古气候 古环境 |
| 文章编号： | 1000-3657（2006）06-1406-05 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006-03-202006-05-23 |
Grain-size characteristics of sediments in the Jiangling section and their paleoclimatic significance |
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| WANG Qiu-liang,LI Chang-an,XIE Yuan-yun,MA Yong-fa.Grain-size characteristics of sediments in the Jiangling section and their paleoclimatic significance[J].Chinese Geology,2006,33(6):1406-1410. |
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| Authors: | WANG Qiu-liang LI Chang-an XIE Yuan-yun MA Yong-fa |
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| Institution: | 1. Faculty of Earth Sciences, China University of Geosdences, Wuhan 430074, Hubei, China; 2. Geography Department, Harbin Normal University, Harbin 150080, Heilongjiang, China |
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| Abstract: | The grain sizes of sediments were measured and their distribution and parameters were analyzed through high-resolution sampling of the Jiangling section of the Jianghan plain and by using a Mastersize 2000 laser analyzer, and the paleoclimatic significance of the grain sizes in the area is discussed on the basis of the aforesaid analysis, combined with the sporopollen and lithologic data. The results show that coarse grains evidently increase in the sediments deposited in a warm-moist climate and decreased in a cold-dry climate. By comparison with the neighboring areas, the paleoclimatic change in the Jiangling area since 9 000 a B.P. revealed by the grain sizes of sediments is consistent with the results of study of other indicators in neighboring area in China. |
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| Keywords: | Jiangling section grain-size characteristics paleoclimatic paleoenvironment |
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