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| Content Provider | Springer Nature Link |
|---|---|
| Author | Lucassen, Friedrich Wiedicke, Michael Franz, Gerhard |
| Copyright Year | 2009 |
| Abstract | Marine Quaternary trench and slope sediments were sampled along the margin of the Southern Andes, Chile between 36° and 40°S. Major and trace element contents indicate only minor influence of weathering and transport fractionation. The whole rock composition of the sediments is similar to the average rock of the Cretaceous to Holocene magmatic arc of this section of the southern volcanic zone. Sr, Nd, and Pb isotope composition of the sediments also resembles closely the average composition of the magmatic arc. The contribution of compositionally distinct Palaeozoic crust, which makes up most of the volume of the forearc, is ~0–20% crustal Sr, Nd, and Pb according to the isotope record of the trench and slope sediments. Input of sediments from the continent into the subduction system was dominated by detritus from the magmatic arc at least for the last 20 My on the basis of the Oligocene to Holocene exhumation history of the margin. |
| Starting Page | 687 |
| Ending Page | 701 |
| Page Count | 15 |
| File Format | |
| ISSN | 14373254 |
| Journal | International Journal of Earth Sciences |
| Volume Number | 99 |
| Issue Number | 3 |
| e-ISSN | 14373262 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2009-01-10 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Active continental margin Trench sediments Chemical composition Isotope signature Southern Andes Geology Geophysics/Geodesy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences |
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