| Title | A summary of the Paleozoic biostratigraphy and reexamination of palynology samples from the 9590 to
10 000 ft. (2923.0–3048.0 m) interval of the Gannet O-54 well, Grand Banks of Newfoundland |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Bingham-Koslowski, N ; Miller, M A |
| Source | Geological Survey of Canada, Open File 8819, 2021, 7 pages, https://doi.org/10.4095/328813  Open Access |
| Image |  |
| Year | 2021 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | digital; on-line |
| File format | pdf |
| Province | Newfoundland and Labrador; Eastern offshore region |
| Area | Grand Banks; Atlantic Ocean |
| Lat/Long WENS | -52.6353 -52.6350 45.0653 45.0650 |
| Subjects | paleontology; stratigraphy; geochemistry; Nature and Environment; Science and Technology; exploration wells; biostratigraphy; palynology; spores; thermal alteration index; Upper Devonian; Middle
Devonian; continental margins; continental shelf; organic materials; Gannet O-54 Well; Ancyrospora sp.; Phanerozoic; Paleozoic; Devonian |
| Illustrations | location maps; tables |
| Program | GEM2: Geo-mapping for Energy and Minerals Baffin Region |
| Released | 2021 09 14 |
| Abstract | Five unoxidized palynological (kerogen) slides from the lowermost section of the Gannet O-54 well (part of the Geological Survey of Canada - Atlantic's archived slide collection) were re-analyzed with
the hope of providing refined ages for this mainly indeterminate interval: slides P3580-07 (9590'/2923.0 m), P3581-07 (9690'/2953.5 m), P3582-07 (9790'/2984.0 m), P3583-07 (9890'/3014.5 m), and P3584-07 (10 000'/3048.0 m). Thermal alteration indices
(TAIs) were also measured where possible. Three of the slides are barren (P3581-07, P3583-07, and P3584-07). One slide (P3582-07) contains two spores: Middle to Late Devonian Ancyrospora sp. with a TAI value of 6+ and an indeterminate spore with a
TAI value of 5+. Both spores are interpreted as caved and thus not useful in determining age. Only one slide, P3580-07 (9590'/2923.0 m), yields in situ, identifiable spores, indicating a Middle to Late Devonian age, which is consistent with
previously published palynological data for Gannet O-54. |
| Summary | (Plain Language Summary, not published)
This report provides a summary of pre-existing palynological (age) data for the Paleozoic interval of the Gannet O-54 well as well as new results from a
re-examination of palynological slides from the lowermost section (9590' - 10 000') of the well. The slides are part of the Geological Survey of Canada's archived collection and palynomorph recovery was sparse to absent in the slides. Of the five
slides that were re-examined, only one slide had useable palynomorphs that resulted in a Middle to Late Devonian age assignment for that depth. Thermal alteration indices are also reported where possible from the five slides and indicate that the
strata fall within the dry gas to over mature phase based on the Amoco TAI Scale. |
| GEOSCAN ID | 328813 |
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