Other
Scientific paper
May 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978phdt........22a&link_type=abstract
Ph.D. Thesis Kansas Univ., Lawrence.
Other
Appalachian Mountains (North America), Planetary Composition, Planetary Evolution, Plateaus, Geology, Limestone, Stratigraphy
Scientific paper
The differentiation of drift in the Appalachian Plateau of central New York and northernmost Pennsylvania into facies, an erratic-rich valley facies and an erratic-poor upland facies, is examined. The composition of stratified drift in valleys of the Plateau is found to be dependent on (1) distance from source outcrops of different rock types, and (2) distance of fluvial transport in meltwater streams prior to deposition. It is shown that erratic-rich drift found in main valleys of the Plateau was created by multicyclic reworking or erratic-rich stratified drift during repeated glaciation. Other results include: limestone-bearing (erratic-rich) gravels of Late Wisconsin age were locally cemented into conglomerates by postglacial precipitation of calcite and aragonite; conglomerate fragments of Middle Wisconsin age were cemented in the same manner, due to weathering processes operating in the vadose zones of limestone-bearing terraces; conglomerate fragments indicate that Early Wisconsin drift was quite similar to Late Wisconsin drift.
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