[Rockhounds] Ancient Colorado River mystery solved

[Paul]

Ancient Colorado River mystery solved: Ancient shallow sea
with strong tides. University of Oregon. December 17, 2020
https://www.sciencedaily.com/releases/2020/12/201217092354.htm

The papers are:

Dorsey, R.J., O'Connell, B., McDougall, K. and Homan, M.B.,
  2018. Punctuated sediment discharge during early Pliocene birth
of the Colorado River: Evidence from regional stratigraphy,
sedimentology, and paleontology. Sedimentary Geology, 363, pp.1-33.
https://eartharxiv.org/repository/view/1542/
https://www.researchgate.net/publication/320147485_Punctuated_Sediment_Discharge_During_Early_Pliocene_Birth_of_the_Colorado_River_Evidence_from_Regional_Stratigraphy_Sedimentology_and_Paleontology
https://www.researchgate.net/profile/Rebecca_Dorsey

Kevin Gardner, Rebecca J. Dorsey. Mixed carbonate-siliciclastic
sedimentation at the margin of a late Miocene tidal strait, lower
Colorado River Valley, southwestern USA. Sedimentology, 2020.

Brennan O'Connell, Rebecca J. Dorsey, Stephen T. Hasiotis,
Ashleigh v.s. Hood. Mixed carbonate-siliciclastic tidal
sedimentation in the Miocene to Pliocene Bouse Formation,
palaeo-Gulf of California. Sedimentology, 2020.
https://eartharxiv.org/repository/view/1878/

Yours,

Paul H.