Geochronologic data from the southern margins of the Colorado Plateau (western United
States) show an inboard radial migration of Neogene basaltic magmatism. Nd and Sr …

Abstract During Cenozoic time, the Colorado Plateau was raised about 2 km above sea
level. The most-recent and best-documented uplift of the plateau (∼ 1 km) has been …

Nd-Sr isotopes and major and trace element abundances were measured in lower and
upper crustal xenoliths carried in Tertiary minettes and kimberlitic diatremes of the Colorado …

Quaternary volcanic rocks were erupted at four locations in NW Colorado; Dotsero (4150
yBP), Willow Peak (undated), McCoy (0.64 my BP), and Triangle Peak (1.98-1.87 myBP). At …

We present new evidence on the seismic velocity and density of the crust and upper mantle
along a 200‐km‐long transect across the eastern Basin and Range and western Colorado …

Late Cenozoic volcanism along the eastern margin of the Basin and Range province in
northern Arizona and Utah has created a suite of essentially alkalic basaltic lavas similar to …

Mafic volcanism gradually encroaching on the tectonically stable Colorado Plateau in the
southwestern United States appears to originate from within Paleoproterozoic lithosphere …

Continental lithosphere is in unstable mechanical equilibrium because its mantle layer is
denser than the asthenosphere. If any process such as cracking, slumping, or plume erosion …

The correspondence between seismic velocity anomalies in the crust and mantle and the
differential incision of the continental-scale Colorado River system suggests that significant …

The Colorado Plateau underwent 1.5 to 2 km of surface uplift from near sea level during Late
Cretaceous time. Neither the mechanism nor the timing of the uplift are well constrained …