@article{e40a0de89abc4862b91959087fb07f91,
title = "Crustal Thickening of the Northern Central Andean Plateau Inferred From Trace Elements in Zircon",
abstract = "The timing of crustal thickening in the northern Central Andean Plateau (CAP), at 13–20°S, and its relationship to surface uplift is debated. Zircon qualitatively records crustal thickness as its trace element chemistry is controlled by the growth of cogenetic minerals and relative uptake of light and heavy Rare Earth Elements. Jurassic to Neogene zircons from volcanic rocks, sandstones, and river sediments reveal shifts in trace element ratios suggesting major crustal thickening at 80–55 Ma and 35–0 Ma, coincident with high-flux magmatism. An intervening magmatic lull due to shallow subduction obscures the magmatic record from 55 to 35 Ma during which thickening continued via crustal shortening. Protracted thickening since the Late Cretaceous correlates with early elevation gain of the CAP western margin, but contrasts with Miocene establishment of near modern elevation in the northern CAP and the onset of hyperaridity along the Pacific coast, highlighting their complex spatial and temporal relationship.",
author = "Sundell, {Kurt E.} and George, {Sarah W.M.} and Barbara Carrapa and Gehrels, {George E.} and Ducea, {Mihai N.} and Saylor, {Joel E.} and Martin Pepper",
note = "Funding Information: We thank Erick Gil and the Gil family for logistical support in southern Peru; Nicky Giesler and Mark Pecha at the Arizona LaserChron Center; Gilby Jepson for insightful discussions about crustal thickness proxies. We thank Santiago Le{\'o}n, Ryan McKenzie, and Editor Lucy Flesch for providing constructive feedback which significantly improved the quality and clarity of this work. Barbara Carrapa and Mihai N. Ducea acknowledge support from US National Science Foundation grant EAR 2020935. Mihai N. Ducea also acknowkedges support from the Romanian Executive Agency for Higher Education, Research, Development and Innovation Funding project PN‐III‐P4‐ID‐PCCF‐2016‐0014. This work was partially funded by National Science Foundation grants EAR‐1550097 to Joel E. Saylor, and EAR‐1649254 to George E. Gehrels in support of the Arizona LaserChron Center. Publisher Copyright: {\textcopyright} 2022. American Geophysical Union. All Rights Reserved.",
year = "2022",
month = feb,
day = "16",
doi = "10.1029/2021GL096443",
language = "English (US)",
volume = "49",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "3",
}