fractures zfaults zjoints. joint sets zgroup of joints parallel joints zhave common origin
Post on 21-Dec-2015
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Recognizing joints
Lack of offsetJoint surface
textures Hackle Origin Plumose Rib Marks Fringe Joints Rib
mark
Characterization of Single Joints
Surface texturesMineralizationShapeOrientationLengthAperturePath or trace
pattern
Courtesy of Zion National Park
Characterization of Joint Sets
OrientationTypical joint
lengthDensity/spacingRelation among
setsLateral extent Individual joint
interactionsJoints at Arches National Park
Map relation of fractures to other structures
Joints Folds Faults Stratigraphy
Faults Folds Stratigraphy
Myers and Aydin, 2004, JSG
Gross, 1995, GSA Bull