Abstract
Local facies forming the basal Rosario Formation of the Upper Cretaceous in the Erendira area of northern Baja California (Mexico) were deposited in distinctive windward and leeward settings. They are related by a nonconformity to the flanks of an andesite ridge of the Lower Cretaceous Alisitos Formation. Through rapid transgression and erosion in late Cretaceous time, the ridge was reduced to a maximum width of a half-kilometer and its neck was breached by Rosario sediments to form a small near-shore island. One end of the Alisitos outlier is now being truncated by marine erosion so that the original length of the peninsula-island is difficult to determine. It was not less than 1.5 km long, however, based on local geomorphology
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
