Possible Continuous-Type (Unconventional) Gas Accumulation in Lower Silurian "Clinton" Sands, Medina Group, and the Tuscarora Sandstone in the Appalachian Basin: A Progress Report of 1995 project activities
Robert T. Ryder, Kerry L. Aggen, Robert D. Hettinger, Ben E. Law, John J. Miller, Vito F. Nuccio, William J. Perry, Jr., Stephen E. Prensky, John R. SanFilipo, and Craig J. Wandrey
Open-File Report 96-42
Table 4. Stratigraphic, geochemical, and thermal maturation indices used to constrain the subsidence and maturation kinetic model for the Amerada No. 1 Ullman, Noble County, Ohio.
Amerada No. 1 Ullman
Elk Township
Noble County, Ohio
API 34-121-21278
| Tops(ft) | Formation (Group) | Geochem & Thermal Ind. | Period (Epoch) | Age(Ma) |
| Surface-1530 | Mononghelia Group | Ro~0.6, | Pennsylvanian | 320-288 |
| Conemaugh Group | 100% type III | |||
| Allegheny Formation | kerogen | |||
| Pottsville Group | ||||
| ---unconformity--- | ||||
| ~400 ft removed | ||||
| 1530-1912 | Pocono Group | Mississippian | 360-335 | |
| Sunbury Shale | ||||
| Berea Sandstone | ||||
| 1912-4795 | Upper Devonian shale | Late Devonian | 374-360 | |
| and siltstone undiff. | ||||
| 4795-5224 | Marcellus Shale | Early and Middle | 408-374 | |
| Columbus Limestone | Devonian | |||
| Oriskany Sandstone | ||||
| Helderberg Limestone | ||||
| 5224-6060 | Bass Islands Dolomite | Late Silurian | 421-408 | |
| Salina Group | ||||
| 6060-6835 | Lockport Dolomite | Early Silurian | 438-421 | |
| Rochester Shale | ||||
| "Clinton" sands | ||||
| 6835-8220 | Queenston Shale | Late Ordovician | 458-438 | |
| Reedsville Shale | ||||
| 8220-9382 | Utica Shale- 190 ft thick | PI~0.03 | Middle Ordovician | 473-458 |
| Trenton Limestone | TOC=3-4 | |||
| Black River Limestone | 50% type II & | |||
| Wells Creek Formation | 50% type III | |||
| ---Knox unconformity--- | ||||
| ~350 ft removed | ||||
| 9382-10545 | Knox Dolomite | Late Cambrian and | 510-478 | |
| Early Ordovician | ||||
| 10545-11420 | Conasauga Formation | Late Cambrian | 523-510 | |
| Rome Formation | ||||
| Mt. Simon Sandstone | ||||
| ---unconformity--- | ||||
| 11420 | Igneous and metamorphic | Middle Proterozoic | 1,000 | |
| basement rocks |
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