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" The outline of the mountains of this formation is almost a straight line, with few interruptions, bounding long parallel ridges of nearly the same height, declining gently towards the side, where the stratification dips from the horizon, and more precipitous... "
Observations on the Geology of the United States of America: With Some ... - Página 55
por William Maclure - 1817 - 127 páginas
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The Edinburgh Review: Or Critical Journal, Volumen30

1818
...line, with few interruptions, bounding long parallel ridges of nearly Khe same height, declining eently towards the side where the stratification dips from the horizon, and more precipitous on the ojiposite .side where the «dge of the stratum breaks out to the day. Of the primitive rocks Granite...
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Transactions of the American Philosophical Society, Volumen6

1809
...on the north west side, sloping gradually towards the primitive, which ranges along its south east boundary. The outline of the mountains of this formation,...precipitous on the opposite side, where the edge of the strata comes to the surface. This formation is composed of a small-grained transition limestone, of...
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THE EDINBURGH REVIEW OF CRITICAL JOURNAL

DAVID WILLISON - 1818
...deviation in some places from this general rule ; the dip being, for a short distance, to the south-east. The outline of the mountains of this formation is almost a straight line, with few interruptions, bound, ing long parallel ridges of nearly the same height, declining gently towards the side where...
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A Gazetteer of the State of Pennsylvania: Part First ... General Description ...

Thomas Francis Gordon - 1832 - 563 páginas
...dipping generally to the north-west, at an angle in most places under 45° from the horizon." — " The outline of the mountains of this formation, is...grained transition limestone of all the shades of color from a white to a dark blue, and in some places intimately mixed with a stratum of grey wacke...
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The Geographical Catechism of Pennsylvania: And the Western States; Designed ...

Israel Daniel Rupp - 1837 - 384 páginas
...direction, dipping generally to the northwest, at an angle in most places under 45" from the horizon.""" The outline of the mountains of this formation, is...dips from the horizon, and more precipitous on the oposite side, where the edge of the stratum breaks out to the day." " This formation is composed of...
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Transactions, American Philosophical Society (Old Series, vol. 5, 1802)

...on the north west side, sloping gradually towards the primitive, which ranges along its south east boundary. The outline of the mountains of this formation,...precipitous on the opposite side, where the edge of the strata comes to the surface. This formation is composed of a small-grained transition limestone, of...
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