| 吉南地区马达岭组的时代重新厘定及其意义 |
| |
| 引用本文： | 陈跃军,周晓东.吉南地区马达岭组的时代重新厘定及其意义[J].吉林地质,1996,15(2):27-30. |
| |
| 作者姓名： | 陈跃军 周晓东 |
| |
| 作者单位： | 吉林地勘局区调所 |
| |
| 摘 要： | 吉林地区的马达岭组为一套河流相紫色、紫红色砂砾岩，前人曾先后将其置于中侏罗世、晚株罗世、新元古代、古元古代。但由于缺少直接或间接的地质证据及同位素年龄资料，故其时代问题一直悬而未决。１９９１￣１９９３年笔者等在红土崖幅（１／５万）进行区调工作，发现了青白口纪的鱼台组不整合覆于马达岭组之上，根据层序学的理论分析，马达岭组应属新元古代海侵早期深切河谷沉积。故将其时代置于青白口纪早青白口世。
|
| 关 键 词： | 马达岭组 青白口纪 地层时代 吉南地区 |
REDETERMINATION ON THE AGE OF THE MADALING FORMATION,IN THE SOUTHERN PART OF JILIN PROVINCE AND ITS GEOLOGIC SIGNIFICANCE |
| |
| Chen Yuejun,Zhou Xiaodoing.REDETERMINATION ON THE AGE OF THE MADALING FORMATION,IN THE SOUTHERN PART OF JILIN PROVINCE AND ITS GEOLOGIC SIGNIFICANCE[J].Jilin Geology,1996,15(2):27-30. |
| |
| Authors: | Chen Yuejun Zhou Xiaodoing |
| |
| Abstract: | The Madaling formation, in the southern part of Jinn province, is a set of revenue purple,purplishred sandy conglomerates.In the past,it was are short of the geologic evidences and isotopic age data, the geochronologic determination unresolved.In 1991-1993,we conducted regional geological investigation for the Hongtuya sheet(1:50 000),and found that Diaoyutai Formation of Qingbaikou period lay unconformably on the Madaling formation.According to the sequence stratigraphy theory,the Madaling Formation should belong to neoproterozoic,deep river-cut valley deposit.So,the geologic age should be the Qingbaibou period,early Xingbaikou epoch. |
| |
| Keywords: | Madaling Formation Qingbaikou period |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
