Abstract
The Altar basin found in the north western Sonora of Mexico, is a known subsidiary basin forming the present inactive part of the Colorado River delta. The sedimentary records of this basin show how the delta upgraded over a late Miocene. A structurally distinct aquatic basin at the northern end of the Gulf of California is found. Our interpretation of outcrop data, and information from exploratory wells, as well as analog seismic lines of Petróleos Mexicanos (PEMEX), and magnetic and gravity explorations from various sources pointed to the existence of three sedimentary sequences, which can be related at regional scale ...
