Late Miocene Colorado River arrival in the Bidahochi basin supports spillover origin of Grand Canyon · J. J. Y. He et al.
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John J. Y. He1†, Ryan S. Crow2†*, John Douglass3, Christopher S. Holm-Denoma4, Jorge A. Vazquez5, Brian F. Gootee6, Marsha I. Lidzbarski5, Laura S. Pianowski4, Harrison Gray4, Emma Heitmann7‡, Phil A. Pearthree8, P. Kyle House2, Shannon Dulin9 The timing and mechanism of the integration of the Colorado River and incision of the Grand Canyon remain among geology’s enduring controversies. A key question is the configuration of the upper Colorado River watershed between 11 and 6 million years ago. In this study, we present new evidence from zircon uranium-lead geochronology for the arrival of distinctive Colorado–Green River sediment in the Bidahochi basin by 6.6 million years ago derived from the Browns Park Formation. …
摘自《科学》(Science)第392卷 第6795期 · 2026年4月16日,J. J. Y. He et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。