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The relationship of joints and stream drainage in flat-lying rocks of south-central New York and northern Pennsylvania.

Zeitschrift fur Geomorphologie

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Abstract

Streams whose courses are oblique to the joint directions (joint-oblique valleys) tend to erode easily owing to increased corrasion and subsequent undercutting at the upstream intersection of joints. Streams whose courses are parallel and perpendicular (joint-parallel valleys) to the nearly orthogonal joint sets erode by waterfall and plunge-pool formation. Most valleys in the Finger Lakes region are joint-oblique, although some well-developed valleys are joint-parallel. These joint-parallel valleys are usually due to 1) a single deep, pervasive joint whose presence acts as a barrier to lateral expansion of the stream, or 2) erosion along joint zones whose intense fracturing produces weak erosional resistance in the rocks. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The relationship of joints and stream drainage in flat-lying rocks of south-central New York and northern Pennsylvania.
Series title:
Zeitschrift fur Geomorphologie
Volume
27
Issue:
3
Year Published:
1983
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Zeitschrift fur Geomorphologie
First page:
375
Last page:
384