科研之友
微信
新浪微博
Facebook
分享链接
摘要
Fission-track grain-age distributions for detrital zircon are used in this study to resolve the late Cenozoic exhumation history of the European Alps. Grain-age distributions were determined for six sandstone samples and one modern river sediment sample, providing a record from 15 Ma to present. All samples can be traced to sources in the Western and Central Alps, The grain-age distributions are dominated by two components, P1 (8-25 Ma) and P2 (16-35 Ma), both of which show steady lag times (cooling age minus depositional age), with an average of 7.9 m.y. for P1 and 16.7 m.y. for P2, These results indicate steady-state exhumation in the source region at rates of similar to0.4-0.7 km/m.y. since at least 15 Ma.
- 出版日期2001-1
