Open-File Report 06–02
	Rifts, diabase, and the topographic “fishhook”: terrain and military geology of the Battle of Gettysburg—July 1–3, 1863 by Inners, J. D., Cuffey, R. J., Smith, R. C., II, and others 2006
Suggested Citation:	Inners, J. D., Cuffey, R. J., Smith, R. C., II, and others, 2006, Rifts, diabase, and the topographic “fishhook”: terrain and military geology of the Battle of Gettysburg—July 1–3, 1863: Pennsylvania Geological Survey, 4th ser., Open-File Report 06–02, 105 p. [Available online.]
Description:	A highly illustrated guidebook used for a field trip conducted after the 2006 National Geological Society of America (GSA) Meeting in Philadelphia. The guidebook relates geology to the logistics and outcome of the Gettysburg Campaign. From Devils Den to the Union’s emplacement along the “fishhook,” diabase (an igneous intrusive rock) played an especially important role. Eight stop descriptions and related road logs are included.
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