Late Geologic Deformation of the Appalachian Piedmont as Determined by River Gravels

Campbell, Marius R.

doi:10.1073/pnas.15.2.156

Cited by 5 publications

(9 citation statements)

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“…However, the presence of distinct convex-up tributary stream segments and associated geomorphic features (Hack, 1982) support the notion that neotectonic uplift may be occurring over a more narrow region of the Piedmont upstream from the Coastal Plain. This would tend to support the deformation model suggested by Campbell (1929). Closure on Westminster Bryn Mawr Anticline (Campbell, 1929)^.…”

Section: Terrace Correlationsupporting

confidence: 64%

“…This would tend to support the deformation model suggested by Campbell (1929). Closure on Westminster Bryn Mawr Anticline (Campbell, 1929)^.…”

Section: Terrace Correlationsupporting

confidence: 64%

“…Distribution and Age of Terraces Two detailed studies reporting the distribution of terrace remnants along approximately 100 kms. of the lower Susquehanna have been reported by Stose (1928Stose ( , 1930 and Campbell (1929). At least six, gravel-capped terrace levels that are of potential use in this study have been mapped ( Figure 19) and tentatively dated.…”

Section: Fluvial Terraces Along the Lower Susquehanna River* Introducmentioning

confidence: 88%

“…To estimate the magnitude and distribution of possible crustal deformation along the lower Susquehanna River, terrace remnants must be accuratley correlated along the length of the river. Because of the poor preservation of Upland Gravel terrace remnants along the lower Susquehanna, the only two detailed studies of that area (Campbell, 1929, Stose, 1928, 1930 have produced rather disparate views on the nature of the correlation. The relevant controversy involves correlation and inferred deformation of the oldest gravelcapped terrace remnants, the Bryn Mawr Terrace of assumed earliest Pleistocene or Pliocene age (Schlee, 1957).…”

Section: Terrace Correlationmentioning

confidence: 99%

“…The relevant controversy involves correlation and inferred deformation of the oldest gravelcapped terrace remnants, the Bryn Mawr Terrace of assumed earliest Pleistocene or Pliocene age (Schlee, 1957). Campbell's (1929) correlation of the Bryn Mawr Terrace remnants shows a distinct upward bulge in the Bryn Mawr surface ( Figure 20) centered near Safe Harbor, in the general vicinity of historic seismic activity around Lancaster. Contours drawn on this warped surface produced the Westminster Anticline ( Figure 21) with nearly 100 feet of closure that extended from the Potomac River in the southwest to the Schuylkill River in the northeast.…”

Section: Terrace Correlationmentioning

confidence: 99%

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Near-surface neotectonic deformation associated with seismicity in the northeastern United States

Alexander¹,

Gold²,

Gardner³

et al. 1989

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For the Lancaster, PA seismic zone a multifaceted investigation revealed several manifestations of near-surface, neotectonic deformation. Remote sensing data together with surface geological and geophysical observations, and recent seismicity reveal that the neotectonic deformation is concentrated in a NS-trending fault zone some 50 km in length and 10-20 km in width. Anomalies associated with this zone include distinctive lineament and surface erosional patterns; geologically recent uplift evidenced by elevations of stream terraces along the Susquehanna River; and localized contemporary travertine deposits in streams down-drainage from the Inferred active fault zone.

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Section: Terrace Correlationsupporting

confidence: 64%

“…This would tend to support the deformation model suggested by Campbell (1929). Closure on Westminster Bryn Mawr Anticline (Campbell, 1929)^.…”

Section: Terrace Correlationsupporting

confidence: 64%

Section: Fluvial Terraces Along the Lower Susquehanna River* Introducmentioning

confidence: 88%

Section: Terrace Correlationmentioning

confidence: 99%

Section: Terrace Correlationmentioning

confidence: 99%

See 3 more Smart Citations

Near-surface neotectonic deformation associated with seismicity in the northeastern United States

Alexander¹,

Gold²,

Gardner³

et al. 1989

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Neotectonism along the Atlantic passive continental margin: A review

Gardner

1989

Geomorphology

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Rivers, glaciers, landscape evolution, and active tectonics of the central Appalachians, Pennsylvania and Maryland

Pazzaglia¹,

Braun²,

Pavich³

et al. 2006

GSA Field Guide 8: Excursions in Geology and History: Field Trips in the Middle Atlantic States

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Welcome to the Appalachian landscape! Our fi eld trip begins with a journey across Fall Zone (Fig. 1), named for the falls and rapids on streams fl owing from the consolidated rocks of the Appalachians onto the unconsolidated sediments of the Coastal Plain. The eastern U.S. urban centers are aligned along the Fall Zone, the upstream limit of navigation. Typically, the rocks west of the Fall Zone are part of the Piedmont province. This province exposes the metamorphic core of the Appalachian Mountains exhumed by both tectonics and erosion. At least four major phases of deformation are preserved in Piedmont rocks, three Paleozoic convergent events that closed Iapetus, followed by Mesozoic extension that opened the Atlantic Ocean. A record of Cretaceous to Quaternary exhumation of the Appalachians is preserved as Coastal Plain sediments. Late Triassic and Jurassic erosion is preserved in the synextensional fault basins, such as the Newark basin, or is buried beneath Coastal Plain

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Late Geologic Deformation of the Appalachian Piedmont as Determined by River Gravels

Cited by 5 publications

References 0 publications

Near-surface neotectonic deformation associated with seismicity in the northeastern United States

Near-surface neotectonic deformation associated with seismicity in the northeastern United States

Neotectonism along the Atlantic passive continental margin: A review

Rivers, glaciers, landscape evolution, and active tectonics of the central Appalachians, Pennsylvania and Maryland

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