Show I Dirty River Eyebrow Studied by Geologists Chicago Grimly Grimly glowering at atthe atthe atthe the western edge of ot the Albuquerque plain in New Mexico a great black cliff called the Leja del Rio Puerco P erco Eyebrow of ot the Dirty River in English tells geologists a weird tale of volcanic eruptions in the not very distant past Dr Kirk Bryan Harvard university geologist re re- reports reports re- re reports ports in the Journal of Geology He and Dr Franklin T. T McCann of ot Dayton Ohio studied the area Long ago when the Rio Grande flowed in a channel feet higher than the present one they find lavas from Mount Taylor a volcano active before the ice ages poured over the plain Later the rivers cut into the lavas creating grim es es- escarpments escarpments es- es escarpments like the eyebrow Still later the Rio Puerco cut Into the headwaters of ot streams flowing into the Rio Grande from the west pi pirating pirating rating the waters |