| Vicuña Mackenna Batholith | |
|---|---|
| Stratigraphic range: Early Jurassic-Late Cretaceous ~192–98 Ma
| |
| Type | Batholith |
| Lithology | |
| Primary | Gabbro, granitoids |
| Location | |
| Coordinates | 24°21′57″S 69°02′24″W / 24.36583°S 69.04000°W / -24.36583; -69.04000 |
| Region | Antofagasta Region |
| Country | Chile |
| Type section | |
| Named for | Sierra Vicuña Mackenna |
The Vicuña Mackenna Batholith (Spanish: Batolito Vicuña Mackenna) is a group of plutons in the Chilean Coast Rangeofnorthern Chile. The plutons of the batholith formed (cooled from magma to rock) between the Early Jurassic and the Late Cretaceous (192–98 Ma). The magmas that formed the batholith originated in Earth's mantle and have not suffered any significant crustal contamination. A group of Early Cretaceous plutons were intruded syn-tectonically on the Atacama Fault.[1]
Geologists Miguel Hervé and Nicolás Marinivic identify six major units. From the oldest to the youngest these are:[1]
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