Department of Earth and Environmental Science

Robert Giegengack

Selected Recent Publications

Ochadlik, A.R., Jr.; Kritikos, H.L.; and Giegengack, Robert, 1993, Variations in the period of the sunspot cycle: Geophys. Res. Letters, v. 20, p. 1471-1474.

Omar, G.I.; and Giegengack, Robert, 1993, eds., Proceedings of the 7th International Workshop on Fission-Track Thermochronology, Nuclear Tracks and Radiation Measurements, v. 21, #4.

Weggel, J.R.; Morreale, Matthew; and Giegengack, Robert, 1995, The Ocean City, New Jersey, Beach Nourishment Project: monitoring its early performance: Shore & Beach, July 1995, p. 25-32

Murali, A.V.; Underwood, James R.; Jr.; Zolenski, M.; and Giegengack, Robert; 1997, The cometary signature in Libyan Desert Glass: Meeting on Libyan Desert Glass and related Desert Events, Pyramids, p. 133-157.

Giegengack, Robert; and Underwood, James R., Jr., 1997; Stratigraphic constraints on the age and origin of Libyan Desert Glass: Meeting on Libyan Desert Glass and related Desert Events, Pyramids, p. 37-39.

Giegengack, Robert; Omar, G.I.; and Inman, Lars; 1998, Tectonothermal history of basement- cored mountain ranges flanking the Bighorn Basin: surrogate evidence of Laramide and post- Laramide uplift and erosion: in Keefer, W.R.; and Goolsby, J.E., edi tors, Cretaceous and lower Tertiary rocks of the Bighorn Basin, Wyoming and Montana: Wyoming Geological Association, 49th Guidebook, p. 167-178.

Herkenhoff, K.E.; Giegengack, Robert; Kriens, B.J.; Louie, J.N.; Omar, G.I.; Plescia, J.B.; and Shoemaker, E.M., 1999, Geological and geophysical studies of the upheaval dome impact structure, Utah, Proceedings of the 30th Lunar and Planetary Science Conference, March 15- 19, 1999.

Hughes, G. B.; Giegengack, Robert; and Kritikos, Haralambos, 1999, Spectral indications of unexpected contributors to atmospheric CO2 variability: Int’l Journ. Climatology, v.19, pp.813-819.

Abdelwahab, H.S.; and Giegengack, Robert; Distribution of trace and rare-earth elements in late Pleistocene and Holocene core sections, north-central Nile delta, Egypt: Egyptian Journal of Sci., v. 15, in press. (selected for inclusion in inaugural i ssue of Egyptian Journal of Environmental Science)

Abdelwahab, H.S.; Yemane, Keddy; and Giegengack, Robert; Mineralogy and geochemistry of the Plio-Pleistocene lacustrine beds in Wadi Feiran, south Sinai, Egypt: : Implications for environmental and climate change: Quaternary Research, in press.

Giegengack, Robert; Cressler, Walter; Piesieski, Joanne; Bloch, Peter; and students in ENVS 404: ENVS 404 at the University of Pennsylvania: An educational strategy to reduce exposure of urban children to environmental lead: in Ward, Harold, editor, Service learning in the disciplines: Environmental Studies: American Association of Higher Education, in press.

Nicoll, Kathleen; Giegengack, Robert; and Kleindienst, Maxine; Petrogenesis of artifact-bearing fossil-spring tufa deposits from Kharga Oasis, Egypt: Geoarchaeology, in press

Giegengack, Robert, 1999, Topographic inversion as a geomorphic process in the hyperarid eastern Sahara: Vance Haynes Retirement Conference, Tucson, AZ, 9/25/99, abs.

Giegengack, Robert, 1999 Radiocarbon dates of Grand Canyon travertines: Vance Haynes Retirement Conference, Tucson, AZ, 9/25/99, abs.