Silurian rocks are missing, and the Lower Devonian-Mississippian Caballos Novaculite rests unconformably on the Upper Ordovician Maravillas Formation. More than 1.4 km of flysch, from a source to the southeast, forms the Mississippian-Pennsylvanian Tesnus Formation. No Paleozoic rock younger than Early Pennsylvanian (Morrowan Series) have been found. The measured thickness of Paleozoic rocks in the Solitario is approximately 2.6 km and represents a time span of 240 m.y. with a single break of ~30 m.y. during Silurian, one of the longest depositional records known. The Paleozoic rocks found in the Solitario are allochthonous and were intensely deformed during the Ouachita Orogeny. The orogeny affected the Solitario area from Middle Pennsylvanian (Desmoinesian) until Early Permian (middle Wolfcampian). Transport of the allochton during the Ouachita Orogeny was at least tens of kilometers from the southeast.

Acquired by the State of Texas in 1988 and first opened to the public as Big Bend State Natural Area in 1991, Big Bend Ranch State Park (BBR) lies within the southern Big Bend of the Trans-Pecos, encompassing some 492 square miles of the Chihuahuan Desert and representing nearly half the total acreage of the Texas state park system. Unlike nearby Big Bend National Park—BBR is relatively undiscovered, wild, challenging, and slightly intimidating. BBR is the “Other” Big Bend, christened the “Other Side of Nowhere,” a rugged wilderness outback for the adventuresome with 238 miles of trails for hiking, biking, and horseback riding and 70 miles of challenging four-wheel drive roads where visitors can explore stunning geological features, remnants of the area’s 11,000-year human history, and a diversity of flora and fauna that rivals any area in the state. In this guidebook, photographer and naturalist Roy Morey walks visitors through the wild landscape, sharing what he has learned during eleven years of studying and photographing Big Bend Ranch State Park. Organized around the six physiographic regions of the park as outlined by the Texas Parks and Wildlife Department, The Other Side of Nowhere guides readers through the features and locations of the park and includes a field guide section with informative profiles and vivid imagery of 281 plant species. This definitive guide to Big Bend Ranch State Park is a must-have for visitors and an important botanical resource for the greater Big Bend and Trans-Pecos areas.

This text brings together multidisciplinary research and review papers on the Lower Palaeozoic geology of the Sierras Pampeanas and the Precordillera of central west Argentina. It deals with the final stages of assembly of the supercontinent of Gondwana and its tectonic interaction with Laurentia (the North American continent of today).