2008
DOI: 10.1130/b26082.1
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The Chuska erg: Paleogeomorphic and paleoclimatic implications of an Oligocene sand sea on the Colorado Plateau

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Cited by 19 publications
(34 citation statements)
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“…Paleogeomorphic studies by Cather et al (2008) indicate that by about 35 Ma, the Defiance uplift and surrounding areas had been eroded to a nearly flat surface, upon which the Chuska erg aggraded from about 33.5 to 27 Ma. NVF eruptions commenced near the end of this interval (Semken 2003).…”
Section: Discussionmentioning
confidence: 98%
“…Paleogeomorphic studies by Cather et al (2008) indicate that by about 35 Ma, the Defiance uplift and surrounding areas had been eroded to a nearly flat surface, upon which the Chuska erg aggraded from about 33.5 to 27 Ma. NVF eruptions commenced near the end of this interval (Semken 2003).…”
Section: Discussionmentioning
confidence: 98%
“…However, the average polar wander path for southwestern North America shows little latitude change since middle Miocene time [Gripp and Gordon, 2002]. Moreover, widespread deposition of evaporites in middle and late Miocene time in the southwestern United States [e.g., Faulds et al, 2001] and other paleoenvironmental indicators [Cather et al, 2008] suggest that the southwestern United States has generally been arid to semiarid since Oligocene time, further pointing to long-term stability of the MAT lapse rate.…”
Section: Relative Contribution Of Uplift and Climate Change To Deposimentioning
confidence: 99%
“…After the Laramide orogeny, drainages in the Grand Canyon region were directed northeast off the ancestral Mogollon highland (Young and McKee, 1978). In Oligocene time, these consequent drainages were disrupted by magmatism in the central plateau, by the onset of arid climate, and potentially by epeirogenic uplift (e.g., Cather et al, 2008). In Charlie Hunt's extensive work (1956,1969), he concluded that much of the upper Colorado River drainage had established itself on the northern and central plateau by Miocene time.…”
Section: Introduction-the Grand Debatementioning
confidence: 99%