جزییات کتاب
About The ProductPublished by the American Geophysical Union as part of the Field Trip Guidebooks Series. During the latest Devonian and early Mississippian the northern Appalachian region was situated at approximately 10 to 20 degrees south latitude (Figure 2) (Scotese et al., 1979). The Appalachian foreland basin was bordered to the southeast by a tectonic highland created by the impending collision of the North American and African continents. The downwarping resulting from this collision allowed essentially continuous accumulation of sediments in western Maryland. In this area the latest Devonian and early Mississip pian sediments are unbroken by major unconformities (Scheckler, 1986). Content: