Dr. Guy Plint
Sedimentology, Stratigraphy and Basin Analysis
D.Phil. Oxford, 1981
Office: BGS 1072
Lab: BGS 1077
The primary research of my group is focused on the Cretaceous rocks of the Western Canada foreland basin. Fundamentally, we are interested in understanding the processes (tectonism, eustatic change, sediment supply) that controlled deposition, erosion and depositional cyclicity. We have access to all public drilling records (well logs) for the basin, which allows construction of very detailed stratigraphic cross-sections. We employ an allostratigraphic (sequence stratigraphic) approach which permits division of the basin fill into genetic units, related to relative sea-level changes. Mapping of sequence-bounding surfaces allows isopach maps to be constructed, which reveal the complex subsidence history of the basin. This approach also permits mapping of facies belts, and hence regional paleogeography can be reconstructed. The excellent subsurface stratigraphic framework allows correlation to outcrop on the periphery of the basin, allowing sedimentological detail from outcrop to be integrated into the regional picture.
Recent projects have involved both marine and nonmarine units ranging in age from late Albian to early Campanian. Several projects focused on thick mudstone successions which, although superficially monotonous, preserve a very detailed history of tectonic movement of the basin floor. Other studies have revealed evidence for small scale (~10 m) but high frequency (20-100 ky) relative sea level oscillations which are most reasonably explained in terms of glacio-eustasy - despite the popular notion of a mid-Cretaceous ‘greenhouse’ climate. Other studies have examined the relationship between subsidence rate and the character of alluvial environments, including the nature of fluvial systems, and paleosols. Major paleovalley and interfluve systems have been mapped in detail, and drainage patterns can be related to flexural tectonics and to more localised fault movement.
- Plint, A.G., Tyagi, A., McCausland, P.J.A., Krawetz, J.R., Zhang, H., Roca, X., Hu, Y.G.,, Varban, B.L., Kreitner, M.A. and Hay, M.J., 2012, Dynamic relationship between subsidence, sedimentation, and unconformities in mid- Cretaceous, shallow-marine strata of the Western Canada Foreland Basin: Links to Cordilleran Tectonics. In: Busby, C. & Azor Pérez, A., (eds.), Recent Advances in the Tectonics of Sedimentary Basins, Chapter 24, p. 480-507. Wiley-Blackwell Publishing Ltd.
- Mongrain, J.R., McCarthy, P.J., Plint, A.G. and Fowell, S.J., 2012 Integrated paleopedology and palynology from alluvial paleosols of the Cretaceous (Cenomanian) Dunvegan Formation, Alberta and British Columbia, Canada: paleoenvironmental and stratigraphic implications. In: New Frontiers in Paleopedology and Terrestrial Paleoclimatology. SEPM Special Publication, 104, p. 231-255.
- McCarthy, P.J. and Plint, A.G. 2012 A pedostratigraphic approach to nonmarine sequence stratigraphy: a three-dimensional paleo-landscape model from the Cenomanian Dunvegan Formation, Alberta and British Columbia, Canada. In: New Frontiers in Paleopedology and Terrestrial Paleoclimatology. SEPM Special Publication 104, p. 159-177.
- Plint, A.G., Macquaker, J.H.S. and Varban, B.L. 2012, Shallow-water, storm-influenced sedimentation on a distal, muddy ramp: Upper Cretaceous Kaskapau Formation, Western Canada foreland basin. Journal of Sedimentary Research , 82, 801-822.
- Cook, T.D., Wilson, M.V.H., Murray, A.M., Plint, A.G., Newbrey, M.G. and Everhart, M.J. 2013, A high-latitude euselachian assemblage from the Early Turonian of Alberta, Canada. Journal of Systematic Paleontology, 11, 555-587.
- Shank, J.A. and Plint, A.G. 2013, Allostratigraphy of the Upper Cretaceous Cardium Formation in subsurface and outcrop in southern Alberta, and correlation to equivalent strata in northwestern Montana, Bulletin of Canadian Petroleum Geology, v. 61, p. 1-40.
- Grifi, M.D., Plint, A.G. and Walaszczyk, I., 2013, Rapidly changing styles of subsidence revealed by high-resolution mudstone allostratigraphy: Coniacian of Sweetgrass Arch area, southern Alberta and northern Montana. Canadian Journal of Earth Sciences, v. 50, p. 439-461.
- Buckley, R.A. and Plint, A.G. 2013, Allostratigraphy of the Peace River Formation (Albian) in north-western Alberta and adjacent British Columbia. Bulletin of Canadian Petroleum Geology, v. 61, p. 295-330.
- Plint, A.G., Macquaker, J.H.S., 2013, Reply to Discussion on: Shallow-water, storm-influenced sedimentation on a distal, muddy ramp: Upper Cretaceous Kaskapau Formation, Western Canada foreland basin. Journal of Sedimentary Research , v. 83, p. 1200-1201.
- Plint, A.G. 2014, Mud dispersal across a Cretaceous prodelta: Storm-generated, wave-enhanced sediment gravity flows inferred from mudstone microtexture and microfacies. Sedimentology, v. 61, p. 609-647.
- McCrea, R.T., Buckley, L.G., Plint, A.G., Currie, P.J., Haggart, J.W, Helm, C.W. and Pemberton, S.G. 2014, A review of vertebrate track-bearing formations from the Mesozoic and earliest Cenozoic of western Canada.. In: Fossil footprints of western North America, ed. by M.G. Lockley and S.G. Lucas., New Mexico Museum of Natural History and Sciences, Bulletin 62, p. 5-93.
- Walaszczyk, I., Shank, J.A., Plint, A.G. and Cobban, W.A., 2014, Inter-regional correlation of disconformities in Upper Cretaceous strata, Western Interior Seaway: Biostratigraphic and sequence-stratigraphic evidence for eustatic change. Geological Society of America, Bulletin, v. 126, p. 307-316.
- Henderson, O.A., Vannelli, K.M. and Plint, A.G., 2014, Allostratigraphy and paleogeography of the Harmon and Cadotte members of the Peace River Formation (middle Albian), west-central Alberta and adjacent British Columbia. Bulletin of Canadian Petroleum Geology, v. 62, p. 177-212.
- Plint, A.G. and Cheadle, B.A. 2014. Reply to Discussion on Mud dispersal across a Cretaceous prodelta: Storm-generated, wave-enhanced sediment gravity flows inferred from mudstone microtexture and microfacies. Sedimentology, v. 62, 394-400.
- McCrea, R.T., Buckley, L.G., Plint, A.G., Lockley, M.B., Matthews, N.A., Noble, T.A., Xing, L., and Krawetz, J.R., 2015, Vertebrate ichnites from the Boulder Creek Formation (Lower Cretaceous: middle to upper Albian) of northeastern British Columbia, with a description of a new avian ichnotaxon, Paxavipes babcockensis ichnogen. et isp. nov. Cretaceous Research, v. 55, p. 1-18.
- Ausich, W.I., Stelck, C.R., Plint, A.G., Buckley, R.A. and Angiel, P.J. 2015, Early Cretaceous (early late Albian) echinoderms from northeastern British Columbia, Canada. Canadian Journal of Earth Sciences, v. 52, p. 235-243.
- Buckley, R.A., Plint, A.G., Henderson, O.A., Krawetz, J.R. and Vannelli, K.M. 2015. Ramp sedimentation across a middle Albian, Arctic embayment: Influence of subsidence, eustasy and sediment supply on stratal architecture and facies distribution, Lower Cretaceous, Western Canada Foreland Basin. Sedimentology, v. 62, in press.
- Walaszczyk, I., Shank, J.A. and Plint, A.G., 2015, Reply to Discussion on: Inter-regional correlation of disconformities in Upper Cretaceous strata, Western Interior Seaway: Biostratigraphic and sequence-stratigraphic evidence for eustatic change. Geological Society of America, Bulletin, v. 127, in press.
- van Helmond, N.A.G.M., Sluijs, A., Papadomanolaki, N.M., van de Schootbrugge, B., Plint, A.G., Gröcke, D.R., Trabucho-Alexandre, J., Pearce, M.A., Eldrett, J.S., Brinkhuis, H. and Walaszczyk, I., Equatorward migration of dinoflagellates during a Late Cretaceous cold spell. Submitted to Geological Society of America, Bulletin, November 2015.
Earth Sciences 2260a: From Beds to Basins – an Introduction to Sedimentology and Stratigraphy.
Earth Sciences 4450y: Regional Geology Field School. Ten day field course in Nova Scotia and New Brunswick.
Earth Sciences 4460a: Clastic and carbonate facies and environments.
Geology 9564a/b: Basin Analysis and Sequence Stratigraphy (Graduate course, lectures, labs, research paper, seminar).
Geology 9571a/b: Selected Topics in Sedimentary Geology. (Research paper, seminar)
Omar Al-Mufti, PhD candidate
Matea Drljepan, PhD candidate
El Mahadia Ibrahim Mohammed, PhD candidate
Elizabeth Hooper, PhD candidate
Katharin Pavan, MSc candidate
Kathleen Vannelli, MSc candidate