Geology of National Parks, 3D and Photographic Tours
|Yucca bloom in early March along the Old Ore Road north of Rio Grande Village. In the distance, Ernst Arroyo (an intermittent stream) carved a canyon through a hogback ridge of Cretaceous sedimentary formations along the eastern flank of the Sierra Del Carmen in eastern Big Bend National Park .
Note: sources of geologic interpretation for this website are based on roadlogs by Maxwell (1986) and Scheubel and Mruk (1994), a park geologic map by Maxwell and Lonsdale (1966), and other sources listed in selected references for this website. Stone () and Lady Bird Johnson Wildflower Center,  are sources for Chihuahuan desert plant information.