Dr. Guy Plint
Sedimentology, Stratigraphy and Basin Analysis
D.Phil. Oxford, 1981
Office: BGS 1072
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.
- Hay, M.J., Cumbaa, S.L., Murray, A.M. & Plint, A.G. 2007. A new paraclupeid fish (Clupeomorpha, Ellimmichthyiformes) from a muddy marine prodelta environment: middle Cenomanian Dunvegan Formation, Alberta, Canada. Canadian Journal of Earth Sciences, 44, 775-790.
- Hart, B.S., Varban, B.L., Marfut, K.J. and Plint, A.G. 2007. Blind thrusts and fault-propagation folds in the Upper Cretaceous Alberta Group, Deep Basin: Implications for fractured reservoirs. Bulletin of Canadian Petroleum Geology, 55, 125-132.
- Tyagi, A., Plint, A.G. & McNeil, D.H., 2007, Correlation of physical surfaces, bentonites, and biozones in the Colorado Group from the Alberta Foothills to South-Western Saskatchewan, and a Revision of the Belle Fourche / Second White Specks Formational Boundary. Canadian Journal of Earth Sciences, 44, 871-888.
- Plint, A.G. & Kreitner, M.A. 2007, Extensive, thin sequences spanning Cretaceous foredeep suggest high-frequency eustatic control: Late Cenomanian, Western Canada foreland basin. Geology, 35, 735-738.
- Varban, B.L. & Plint, A.G., 2008, Palaeoenvironments, palaeogeography, and physiography of a large, shallow, muddy ramp: Late Cenomanian-Turonian Kaskapau Formation, Western Canada foreland basin. Sedimentology, 55, 201-233.
- Varban, B.L. & Plint, A.G. 2008, Sequence stacking patterns in the Western Canada foredeep: Influence of tectonics, sediment loading and eustasy on deposition of the Upper Cretaceous Kaskapau and Cardium formations. Sedimentology, 55, 395-421.
- Roca, X., Rylaarsdam, J.R., Zhang, H., Varban, B.L., Sisulak, C.F., Bastedo, K. and Plint, A.G. 2008, An allostratigraphic correlation of Lower Colorado Group (Albian) and equivalent strata in Alberta and British Columbia, and Cenomanian rocks of the Upper Colorado Group in southern Alberta. Bulletin of Canadian Petroleum Geology, 56, 259-299.
- Hu, Y.G. and Plint, A.G. 2009, An allostratigraphic correlation of a mudstone-dominated syn-tectonic wedge: The Puskwaskau Formation (Santonian-Campanian) in outcrop and subsurface, Western Canada foreland basin. Bulletin of Canadian Petroleum Geology, 57, 1-33.
- Plint, A.G., Tyagi, A., Hay, M.J., Varban, B.L., Zhang, H. and Roca, X., 2009, Clinoforms, paleobathymetry, and mud dispersal across the Western Canada Cretaceous foreland basin: evidence from the Cenomanian Dunvegan Formation and contiguous strata. Journal of Sedimentary Research, 79, 144-161.
- Hay, M.J. and Plint, A.G. 2009, An allostratigraphic framework for a retrogradational delta complex: the uppermost Dunvegan Formation (Cenomanian) in subsurface and outcrop, Alberta and British Columbia. Bulletin of Canadian Petroleum Geology, 57, 323-349.
- Plint, A.G., 2010, Chapter 8, Wave- and storm-dominated shoreline and shallow marine systems. In: Facies Models, 4th Edition, Dalrymple, R.W. and James, N.P., eds. Geological Association of Canada, p. 167-199.
- Barker, I., Moser, D., Kamo, S. and Plint, A.G., 2011, High-precision ID-TIMS U-Pb Zircon dating of two transcontinental bentonites: Cenomanian Stage, Western Canada Foreland Basin. Canadian Journal of Earth Sciences, 48, 543-556.
- Ausich, W.I., Buckley, R.A. & Plint, A.G., 2011, Nearshore articulate crinoid from the Albian of Alberta, Canada (Early Cretaceous, Echinodermata). Canadian Journal of Earth Sciences, 48, 719-727.
- 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. and Azor, A., (eds.), Recent Advances in the Tectonics of Sedimentary Basins. Wiley-Blackwell, in Chapter 24, pp. 480-507.
- 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.
- Mongrain, J.R., McCarthy, P.J., Plint, A.G. and Fowell, S.J., 2013 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. 2013 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.
- 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, 61, 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, 50, p. 439-461.
- 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, in press.
- Plint, A.G., Mud dispersal across a Cretaceous prodelta: Storm-generated, wave-enhanced sediment gravity flows inferred from mudstone microtexture and microfacies. Sedimentology, in press.
- Walaszczyk, I., Shank, J.A., Plint, A.G. and Cobban, W.A., Hiatuses in the lower Niobrara Formation of the central US Western Interior Basin revealed by inoceramid faunal succession in the Cardium Formation, Alberta: Implications for eustatic control on sedimentation. Geological Society of America, Bulletin, in press.
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