Jurassic to Palaeogene tectono-magmatic evolution of northern Chile and adjacent Bolivia from detrital zircon U-Pb geochronology and heavy mineral provenance

Year:

2011

Type of Publication:

Article

Authors:

Wotzlaw, Jörn F.; Decou, Audrey; von Eynatten, Hilmar; Wörner, Gerhard; Frei, Dirk

Journal:

Terra Nova

Volume:

23

Number:

6

Pages:

399-406

ISSN:

1365-3121

BibTex:

@article{TER:TER1025, author = "J{\"o}rn F. Wotzlaw and Audrey Decou and von Eynatten, Hilmar and Gerhard W{\"o}rner and Dirk Frei", abstract = "Terra Nova, 23, 399–406, 2011AbstractHeavy mineral provenance data presented in this article reinforce evidence for significant late Palaeogene deformation and relief formation along the western margin of the Central Andean Plateau. Late Eocene–Oligocene onset of molasse-type sedimentation records initial range uplift. Strikingly different basement sources of sediments deposited to the east and west of the Late Palaeogene range indicate that initial relief development was governed by a bivergent thrust system. Significantly higher sediment accumulation rates to the east of the range compared to the west suggest that the generated relief acted already as an effective orographic barrier at that time. Higher precipitation and denudation along the eastern slope facilitated deeper erosion of the trust belt.", doi = "10.1111/j.1365-3121.2011.01025.x", issn = "1365-3121", journal = "Terra Nova", number = "6", pages = "399--406", publisher = "Blackwell Publishing Ltd", title = "{J}urassic to {P}alaeogene tectono-magmatic evolution of northern {C}hile and adjacent {B}olivia from detrital zircon {U}-{P}b geochronology and heavy mineral provenance", url = "http://dx.doi.org/10.1111/j.1365-3121.2011.01025.x", volume = "23", year = "2011", }

Abstract:

Terra Nova, 23, 399–406, 2011AbstractHeavy mineral provenance data presented in this article reinforce evidence for significant late Palaeogene deformation and relief formation along the western margin of the Central Andean Plateau. Late Eocene–Oligocene onset of molasse-type sedimentation records initial range uplift. Strikingly different basement sources of sediments deposited to the east and west of the Late Palaeogene range indicate that initial relief development was governed by a bivergent thrust system. Significantly higher sediment accumulation rates to the east of the range compared to the west suggest that the generated relief acted already as an effective orographic barrier at that time. Higher precipitation and denudation along the eastern slope facilitated deeper erosion of the trust belt.