ClipArt ETC
Eroded fold, breached asymmetrical anticline, the hard stratum forming two opposing uniclines.

Breached Asymmetrical Anticline

Eroded fold, breached asymmetrical anticline, the hard stratum forming two opposing uniclines.

"Deformation of shale by porphyry, Burlington Railroad, east of Whitetail Gulch." -Walcott, 1901

Shale Deformation

"Deformation of shale by porphyry, Burlington Railroad, east of Whitetail Gulch." -Walcott, 1901

Diagram to illustrate the underground extension of inclined strata which crop out on the surface, and the former relationship of the two inclined beds.

Inclined Strata

Diagram to illustrate the underground extension of inclined strata which crop out on the surface, and…

Diagram illustrating the relationships of dip and strike of the inclined strata of an outcropping series of ledges. The strike is represented by the horizontal line; the dip by the line at right angles to the strike.

Inclined Strata Dip and Strike

Diagram illustrating the relationships of dip and strike of the inclined strata of an outcropping series…

Diagram illustrating width of outcrop AB of the bed, the thickness of which is AC; its depth at X is measured by the length of XY.

Width of Outcrop

Diagram illustrating width of outcrop AB of the bed, the thickness of which is AC; its depth at X is…

Eroded fold, symmetrical anticline, from the axis of which the higher beds have been eroded down to a harder stratum.

Symmetrical Anticline

Eroded fold, symmetrical anticline, from the axis of which the higher beds have been eroded down to…