Late Cretaceous Uplift of Grand Canyon: Evidence From Fluid Inclusions

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ID: 305342
2024
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Abstract
For over a century, the history of Grand Canyon has been of interest to many. In recent years, debates have centered around the hypothesis that Grand Canyon formed during the late Cretaceous, not the Miocene, as previously thought. In this study, fluid inclusions within carbonates from the Mauv, Redwall, Supai, and Kaibab Fms. from Grand Canyon yield entrapment temperatures between 135 and 60 °C. Comparison of these temperature to time-temperature histories based on thermochronology (U-Th/He and fission track) from nearby samples suggest that these carbonates had fluids trapped within them from 89 to 58 Ma and that major denudation of late Cretaceous strata occurred during this interval. Regionally derived burial histories and local thermochronology suggest that significant uplift of Grand Canyon and the adjacent Colorado Plateau occurred during the late Cretaceous. We interpret the timing of fluid entrapment, denudation of Cretaceous strata, and burial histories to be consistent with initial uplift associated with the early stages of formation of Grand Canyon during the late Cretaceous. Models of uplift of northern Arizona exclusively during the Cenozoic are inconsistent with these data.
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openalex_W4398782049 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Laura L. Barnett, Peter Copeland, Virginia B. Sisson, Steve Naruk
Journal american journal of science
Year 2024
DOI
10.2475/001c.116737
URL
https://ajsonline.org/article/116737.pdf
Keywords Keywords not found

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