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Extended megadroughts in the southwestern United States during Pleistocene interglacials.
Fawcett PJ, Werne JP, Anderson RS, Heikoop JM, Brown ET, Berke MA, Smith SJ, Goff F, Donohoo-Hurley L, Cisneros-Dozal LM, Schouten S, Sinninghe Damsté JS, Huang Y, Toney J, Fessenden J, WoldeGabriel G, Atudorei V, Geissman JW, Allen CD. Fawcett PJ, et al. Among authors: geissman jw. Nature. 2011 Feb 24;470(7335):518-21. doi: 10.1038/nature09839. Nature. 2011. PMID: 21350483
Chuar Group of the Grand Canyon: record of breakup of Rodinia, associated change in the global carbon cycle, and ecosystem expansion by 740 Ma.
Karlstrom KE, Bowring SA, Dehler CM, Knoll AH, Porter SM, Des Marais DJ, Weil AB, Sharp ZD, Geissman JW, Elrick MB, Timmons JM, Crossey LJ, Davidek KL. Karlstrom KE, et al. Among authors: geissman jw. Geology. 2000 Jul;28(7):619-22. doi: 10.1130/0091-7613(2000)28<619:cgotgc>2.0.co;2. Geology. 2000. PMID: 11543503