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| 鄱阳湖组(第四系)的修订及特征 | |
| 引用本文： | 马振兴,蒋玉珍,魏源,李均辉,李长安.鄱阳湖组(第四系)的修订及特征[J].地层学杂志,2003,27(3):212-215. |
| 作者姓名： | 马振兴 蒋玉珍 魏源 李均辉 李长安 |
| 作者单位： | 1. 江西省地质调查院,江西南昌,330201 2. 赣西地质调查大队,江西南昌,330201 3. 中国地质大学,湖北武汉,430074 |
| 基金项目： | 中国地质调查局长江中游江西段主要水患区环境地质调查评价项目(编号:1999160 0 0 114 )的部分成果 |
| 摘 要： | 根据对鄱阳湖地区 Zk0 1钻孔柱状剖面的研究 ,对鄱阳湖组的定义进行修订、补充 ,认为鄱阳湖组为一套以青灰色淤泥质粘土、黄褐色粘土、粉质粉土为主夹少量粉砂或细砂的湖泊—河口三角洲相沉积。年代地层为第四系全新统 ,底界年龄约 6 2 10± 12 5 a B.P.,开阔湖泊沉积始于 32 4 0± 180 a B.P.,且由北向南时代渐新 ,具有明显的穿时性 |
| 关 键 词： | 岩石地层 鄱阳湖组 湖泊沉积 全新世 第四纪 江西 |
| 文章编号： | 0253-4959(2003)03-0212-04 |
| 修稿时间： | 2003年5月23日 |
REVISION AND CHARACTERS OF THE POYANGHU FORMATION (QUATERNARY) |
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| MA Zhen xing ,JIANG Yu zhen ,WEI Yuan ,LI Jun hui ,and LI Chang an.REVISION AND CHARACTERS OF THE POYANGHU FORMATION (QUATERNARY)[J].Journal of Stratigraphy,2003,27(3):212-215. | |
| Authors: | MA Zhen xing JIANG Yu zhen WEI Yuan LI Jun hui and LI Chang an |
| Institution: | MA Zhen xing 1),JIANG Yu zhen 2),WEI Yuan 1),LI Jun hui 1),and LI Chang an 3) |
| Abstract: | The Poyanghu Formation was proposeod in 1997 by the Geological Survey and Study Brigade of Jiangxi Province, originally donoting the latest lacustrine deposits of the Holocene in the Poyanghu area. This formation has been so for less studied that its lithostratigraphical divisions are not very reasonable and the sedimentary fine range is vague. Based on the study of the columnar section, Zk01 borehole in the Poyanghu area, a revision of the lithostratigraphical units of the Poyanghu Formation is made in this paper. It is regarded that the Poyanghu Formation is composed dominantly of blue grey muddy clay, yellow brown clay and silty clay intercalated with a small number of silty of sandy sediments of lacustrine—estuarine delta facies, with a basic boundary being about 6 210±125a B.P. The open lake began to be deposited at an age of 3 246±180a B.P. and became younger southwards, with a prominent diachronism. It belongs to the Holocene (Quaternary) in chronostratigraphy. |
| Keywords: | lithostratigraphy Poyanghu Formation lacustrine deposit Holocene Quaternary Jiangxi |
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