| Carbon isotope variation in mid-continent "Ordovician-type" oils, relationship to a major Middle Ordovician carbon isotope shift, (abstr.) |
Hatch, J.R.; Jacobson, S.R.; Witzke, B.J.; Anders, D.E.; Watney, W.L.; and Newell, K.D. |
American Association of Petroleum Geologists, Bulletin vol. 69, no. 5, p. 851 |
1985 |
N/A
|
| Microscopical and geochemical observations on Gloeocapsamorpha spp. from the St. Peter Sandstone to the Guttenburg Limestone Member of the Decorah Formation (Middle Ordovician) of the midcontinent, U.S.A., (abstr.) |
Jacobson, S.R.; Hatch, J.R.; and Teerman, S.C. |
American Association of Stratigraphic Palynologists, Annual Meeting, Program and Abstracts p. 19 |
1986 |
N/A
|
| Possible late Middle Ordovician organic carbon isotope excursion; evidence from Ordovician oils and hydrocarbon source rocks, mid-continent and east-central United States |
Hatch, J.R.; Jacobson, S.R.; Witzke, B.J.; Risatti, J.B.; Anders, D.E.; Watney, W.L.; Newell, K.D.; and Vuletich, A.K. |
American Association of Petroleum Geologists, Bulletin vol. 71, no. 11, pp. 1342-1354 |
1987 |
N/A
|