Your PDF has successfully downloaded.
You are not currently logged in.
Access JSTOR through your library or other institution:
Observations on the Trap Rocks of the Connewago Hills near Middletown, Dauphin County, and of the Stony Ridge near Carlisle, Cumberland County, Pennsylvania
John B. Gibson
Transactions of the American Philosophical Society
Vol. 2 (1825), pp. 156-166
Published by: American Philosophical Society
Stable URL: http://www.jstor.org/stable/1005056
Page Count: 11
You can always find the topics here!Topics: Volcanoes, Rocks, Basalt, Seas, Earthquakes, Mountains, Impact craters, Continents, Columnar crystals, Limestones
Were these topics helpful?See something inaccurate? Let us know!