Arrest Lines in Chalk, Sinai

Gouge in Nugget Sandstone

Mudpan Fractures, Sinai

Liodong Bay, Structure & Coherency

Gouge Fractures, Oil Creek Sandstone, Oklahoma

Fold Fractures, Mississippian Limestone, Canada

Fold Fractures, Satellite Photo, Pakistan

Fold Fractures, Kirkuk Field, Iraq

Regional Fractures, Lake Powell, Utah

Regional Fractures, Antrim Shale, Michigan

Normal Fault Fractures, California

Normal Fault Fractures, Clastics, Brunei

Columnar Joints in Basalt, Iceland

Behavior Across a Shear Surface, E. Kaibab Monocline, SC Utah

Organic & Clay-Rich Shale, Ductiility Difference, Maracaibo Basin

Limestone vs. Dolomite Variation, Sawtooth Mnts, Montana

Dolomite vs. Limestone Fracture Intensity, Sawtooth Mnts

Giant Arrest Lines in Sandstone

Oil-Stained Anhydrite, Beaver Creek, Wyoming

Fractures in Dev. Shale & Concretion, US Midwest