Pliocene climate of the Colorado Plateau and the age of the Grand Canyon: evidence from Anza-Borrego, California
Reference:
Fleming,R.F. (1999)
Pliocene climate of the Colorado Plateau and the age of the Grand Canyon: evidence from Anza-Borrego, California The Pliocene:Time of Change (American Association of Stratigraphic Palynologists Foundation. J.H.Wrenn,J.-P Suc and S.A.G. Leroy,editors).
P. 217- 226