This illustration shows the Appalachian Mountains, a region of numerous flexures on a grand scale, as well as many faults; some flexures having a span of several miles, and others only a few feet or inches.

Appalachian Mountains

This illustration shows the Appalachian Mountains, a region of numerous flexures on a grand scale, as…

"Idealized profile to show the supposed structure in the rampart slope of the basin to the west of Ragland." -Walcott, 1901

Basin

"Idealized profile to show the supposed structure in the rampart slope of the basin to the west of Ragland."…

"Diagram showing a reverse or overthrust fault (b)." -Lee, 1915

Reverse Fault

"Diagram showing a reverse or overthrust fault (b)." -Lee, 1915

"Diagram showing normal faults (a)." -Lee, 1915

Normal Faults

"Diagram showing normal faults (a)." -Lee, 1915

"Outcrop showing faults, spur south of Deadwood." -Walcott, 1901

Outcrop

"Outcrop showing faults, spur south of Deadwood." -Walcott, 1901