Origins Series: Sources & Credits

Text & Illustrations: Paul Chrastina

Social media: Crys Moore

Origins: Diabase

  • Berg, T. M., W. E. Edmunds, A. R. Geyer, et al., comps. 1980. Geologic Map of Pennsylvania. 2nd ed. Pennsylvania Geological Survey, 4th ser., Map 1. Harrisburg: Pennsylvania Geological Survey, scale 1:250,000.

  • Faill, Roger T. 2008. “The Gettysburg Basin.” In Geology of the Gettysburg Mesozoic Basin and Military Geology of the Gettysburg Campaign, edited by Jon D. Inners, Gary M. Fleeger, and Richard C. Keen, 17–28. Gettysburg, PA: Field Conference of Pennsylvania Geologists.

  • Morley, C. K. 2018. “3-D Seismic Imaging of the Plumbing System of the Kora Volcano, Taranaki Basin, New Zealand: The Influence of Syn-Rift Structure on Shallow Igneous Intrusion Architecture.” Geosphere 14, no. 6: 2533–2584.

  • Root, Samuel I., and David B. MacLachlan. 1999. “Gettysburg-Newark Lowland.” In The Geology of Pennsylvania, edited by Charles H. Shultz, 298–305. Harrisburg: Pennsylvania Bureau of Topographic and Geologic Survey; Pittsburgh: Pittsburgh Geological Society.

  • Schlische, R. W. 1993. “Anatomy and Evolution of the Triassic-Jurassic Continental Rift System, Eastern North America.” Tectonics 12, no. 4: 1026–1042.

  • Stose, George W., and Anna I. Jonas. 1933. Geology and Mineral Resources of the Middletown Quadrangle, Pennsylvania. Bulletin 840. Washington, DC: United States Department of the Interior, Geological Survey, Government Printing Office.