| 西秦岭三叠系一个浊积岩序列金的地球化学特征 |
| |
| 关键词:turbidite gold geochemical characteristics Triassic West Qinling |
| 基金项目:国家计委科技找矿项目,地矿部“九五”地质矿产资源与环境科技攻关项目 |
|
| 摘要点击次数: 4481 |
| 全文下载次数: 4959 |
| 摘要: |
| Golden Geochemical Characteristics of a Triassic Turbidite Sequence in West Qinling |
| According to detailed analysis of sedimentary rhythm,structure,content and grain size,a typical Upper Triassic turbidite sequence is confirmed at Yaxiang,Zoige county,Sichuan provinece.23 successive gold analytical samples were collected from six Bouma cycles of this turbidite sequence.The golden content of the A member charactered by pebble_bearing sandstone and coarse sandstone shows linear relationship sith that of the underlying muddy siltstone and mudstone of the D—E member in these Bouma cycles.It means that the circulation of gold element between these two menbers has happened,and it further reveals the gold in the trubidite is migratable,which is an important character of source bed .At other hand,the golden content of the sandstone is higher than that of fine grain siltstone and mudstone,and tends to decrease and stabilize upward in the turbidite sequence.It implies that the continental source gold in the Triassic West Qinling basin may be very important. |
| LAI Xu-long,XIE Shu-cheng,DU Yuan-sheng,ZHANG Chuan-ling,ZHU Jing-bin.1998.Golden Geochemical Characteristics of a Triassic Turbidite Sequence in West Qinling[J].Acta Geoscientica Sinica,19(1):210-214. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|