| 阿达滩盆地古近纪淡水腹足类化石的发现及其地质意义 |
| |
| 引用本文： | 王进寿, 拜永山, 郝平, 常革红, 保光普. 阿达滩盆地古近纪淡水腹足类化石的发现及其地质意义[J]. 西北地质, 2004, 37(3): 21-23. |
| |
| 作者姓名： | 王进寿 拜永山 郝平 常革红 保光普 |
| |
| 作者单位： | 青海省地质调查院, 青海 西宁 810012 |
| |
| 基金项目： | 中国地质调查局地质大调查项目(200113000058) |
| |
| 摘 要： | 东昆仑西段阿达滩盆地早新生代陆相碎屑岩沉积建造,原先被笼统认为属"下第三系".1:25万库郎米其提幅区调中,在该碎屑岩建造中首次发现淡水腹足类化石:假菊石型南方圆螺黄河亚种Australorbis pseudoamm onius huang hoensis Yu,实椎螺(未定种)Lymnea sp.根据含化石地层的岩相特征及腹足类化石生存时代,阿达滩盆地的下第三纪应属古近纪渐新世的干柴沟组下部,据该套地层的存在及不整合覆盖于其上的早更新世七个泉组分析,推断阿达滩盆地在渐新世末存在一次较强规模的隆起.
|
| 关 键 词： | 阿达滩盆地 古近纪 淡水腹足类 干柴沟组下部 高原隆升 |
| 文章编号： | 1009-6248(2004)01-0021-03 |
| 收稿时间： | 2003-06-23 |
| 修稿时间： | 2003-06-23 |
Discovery of freshwater Gastropoda fossils in Ancient Neoteric period and its geological significance in Adatan basin |
| |
| WANG Jin-shou, BAI Yong-shan, HAO Ping, CHANG Ge-hong, BAO Guang-pu. Discovery of freshwater Gastropoda fossils in Ancient Neoteric period and its geological significance in Adatan basin[J]. Northwestern Geology, 2004, 37(3): 21-23. |
| |
| Authors: | WANG Jin-shou BAI Yong-shan HAO Ping CHANG Ge-hong BAO Guang-pu |
| |
| Affiliation: | Qinghai Institute of Geological Survey, Xining 810012, China |
| |
| Abstract: | The triphibian chipping-rock sedimentary formation in Early Cenozoic in Adatan basin in western segment of east Kunlun Mt.was formerly considered to belong to "Low Tertiary".In the 1:25 ten thousands Kelangmiqiti sheet of regional geology survey for the first time in the chipping-rock construct,the freshwater Gastropoda fossils were found:Australorbis pseudoammonius huanghoensis Yu,Lymnea sp.According to the stratum contained fossils lithofacies characteristics and the breatheable epoch of the Gastropoda fo ssils,someone considered that the"Low Tertiary" in Adatan basin should belong to the Low Ganchaigou Group of Oligocene in Ancient Neoteric period.According to the analysis of the presence of that stratum and the Early Pleistocene Qigequan Formation unconformably covered,the once stronger scale apophysis was oncluded in Adatanba sin in Oligocene. |
| |
| Keywords: | Adatan basin Ancient Neoteric period freshwater Gastropoda down Ganchaigou Formation uplift plateau |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《西北地质》浏览原始摘要信息 |
|
点击此处可从《西北地质》下载全文 |
