The Puerto Edén Igneous and Metamorphic Complex is a large coherent but varied geologic complex of metamorphic and igneous rocks that crops out in the Fjords and channels of Chile of the Magallanes Region. The rocks of the complex include migmatites, plutonic rocks and high-grade metamorphic rocks. To the west the Puerto Edén Igneous and Metamorphic Complex bounds the South Patagonian Batholith.[1] Mineralogical observations and geothermobarometric calculations indicate high-temperature and low-pressure conditions (ca. 600 to 700 °C (1,112 to 1,292 °F) and 3 to 4.5 kbar) for an event of metamorphism and partial melting of metapelites in the Late Jurassic (previously determined by SHRIMP U–Pb zircon ages).[2]
| Puerto Edén Igneous and Metamorphic Complex | |
|---|---|
| Stratigraphic range: Late Jurassic | |
| Type | Complex |
| Lithology | |
| Primary | Metamorphic rocks, migmatite, plutonic rocks, gneiss |
| Location | |
| Coordinates | 49°08′20″S 74°27′11″W / 49.139°S 74.453°W |
| Region | Magallanes Region |
| Country | Chile |
| Type section | |
| Named for | Puerto Edén |
References
edit
- ^ Hervé, F.; Faundez, V.; Calderón, M.; Massonne, H.-J.; Willner, A.P. (2007). "Metamorphic and plutonic basement complexes". In Moreno, Teresa; Gibbons, Wes (eds.). The Geology of Chile. Geological Society of London. pp. 7–20.
- ^ Calderón et al., 2007
Bibliography
edit- Calderón, Mauricio (2007), "Petrogenesis of the Puerto Edén Igneous and Metamorphic Complex, Magallanes, Chile: Late Jurassic syn-deformational anatexis of metapelites and granitoid magma genesis", Lithos, 93 (1–2): 17–38, doi:10.1016/j.lithos.2006.03.044, retrieved 2018-06-03
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