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TOPOGRAPHIC MAP INTERPRETATION TECHNIQUES USED TO DETERMINE CASSELMAN RIVER DRAINAGE BASIN HISTORY, MARYLAND AND PENNSYLVANIA: A NEW PARADIGM DEMONSTRATION PAPER.
- Source :
-
Pennsylvania Geographer . Spring/Summer2021, Vol. 59 Issue 1, p33-56. 24p. - Publication Year :
- 2021
-
Abstract
- Topographic map evidence for previously unexplained Casselman River direction changes (including where it joins the Youghiogheny River) indicates prolonged and massive volumes of south-oriented water once flowed across the Conemaugh-Casselman River drainage divide and formed diverging southwest- and southeast-oriented channels with the southwest-oriented flow joining south-oriented flow on today’s north-oriented Youghiogheny River alignment. The southeast-oriented channel eroded a water gap across an emerging Negro Mountain and then a diverging southwest-oriented channel followed the northeast-oriented Casselman River alignment to reach south-oriented flow on the now north-oriented Youghiogheny River alignment while the southeast-oriented channel and a southeast-oriented channel which diverged from the southwest-oriented channel eroded the Flaughtery and Piney Creek water gaps into an emerging Meadow Mountain. Conemaugh River drainage system development ended south-oriented flow into the Casselman River drainage basin while regional uplift caused drainage reversals to create today’s northeast-, northwest-, and southwest-oriented Casselman River. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TOPOGRAPHIC maps
*MOUNTAIN meadows
*CHANNEL flow
*SYSTEMS development
*STREAMFLOW
Subjects
Details
- Language :
- English
- ISSN :
- 05535980
- Volume :
- 59
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Pennsylvania Geographer
- Publication Type :
- Academic Journal
- Accession number :
- 156456397