Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8907753 | Journal of South American Earth Sciences | 2018 | 47 Pages |
Abstract
The evolution of the Jurassic plutons in the Upper Magdalena Valley is best explained by onset or increase in subduction erosion of the accretionary prism. This explains the eastward migration of the arc away from the trench. Subduction of prism sediments increased the water flux from the subducting slab, decreasing solidus temperatures, therefore increasing the volume of magma and the amount of crustal melts involved in the magma. This is explains the crystallization of older and more primitive quartz-monzodiorite stocks in the west and the later crystallization of granitic bodies with batholitic dimensions in the east.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth and Planetary Sciences (General)
Authors
G. RodrÃguez, M.I. Arango, G. Zapata, J.G. Bermúdez,