Stratigraphy of the Bad Heart Formation, Clear Hills and Smoky River areas, Alberta

Research Article| December 01, 2013 Stratigraphy of the Bad Heart Formation, Clear Hills and Smoky River areas, Alberta B. Kafle; B. Kafle Terracon Geotechnique Limited 8212 Manning Avenue Fort McMurray, AB T9H 1V9 bkafle@ualberta.ca Search for other works by this author on: GSW Google Scholar R.A. Olson; R.A. Olson 26-22430 Township Road 520 Sherwood Park, AB T8C 1E6 rolson@xplornet.ca Search for other works by this author on: GSW Google Scholar O. Catuneanu O. Catuneanu University of Alberta Department of Earth and Atmospheric Sciences 1-26 Earth Sciences Building Edmonton, AB T6J 2E3 octavian@ualberta.ca Search for other works by this author on: GSW Google Scholar Bulletin of Canadian Petroleum Geology (2013) 61 (4): 253–282. https://doi.org/10.2113/gscpgbull.61.4.253 Article history received: 15 Jul 2010 accepted: 02 Oct 2013 first online: 13 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation B. Kafle, R.A. Olson, O. Catuneanu; Stratigraphy of the Bad Heart Formation, Clear Hills and Smoky River areas, Alberta. Bulletin of Canadian Petroleum Geology 2013;; 61 (4): 253–282. doi: https://doi.org/10.2113/gscpgbull.61.4.253 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of Canadian Petroleum Geology Search Advanced Search Abstract The Upper Cretaceous (mid to late Coniacian) Bad Heart Formation consists of a ‘coarser’ clastic succession (i.e. comprised of sandstone and ooidal ironstone with lesser conglomerate and siltstone) that typically is about 5 to 15 m thick and exists within a much thicker shale succession. The Bad Heart Formation has long been of potential economic interest because in the eastern Clear Hills region it hosts the thickest and most regionally extensive ooidal ironstone deposit in the Western Canada Sedimentary Basin.McLearn subdivided the Smoky River Group (then referred to by him as a formation) on a lithostratigraphic basis into three ‘members’: that is, “a lower shale [Kaskapau Formation], a middle sandstone — the ‘Bad Heart Sandstone’ [now a formation], and an upper shale [Puskwaskau Formation]”, with the type section for Bad Heart Formation being near the intersection of the Smoky and Bad Heart rivers. The data from this study have refined the previously published stratigraphic models, on a sequence stratigraphic basis, whereby three sequences encompass lithostratigraphic components of the uppermost Kaskapau, the entire Bad Heart and lowermost Puskwuskau formations. Each of the three sequences are underlain by a transgressive wave-ravinement surface. The two lower sequences are fully developed within the studied interval, each comprising a transgressive system tract that is overlain by a highstand system tract. The studied interval only includes the lower part of the uppermost sequence, represented by a transgressive system tract, based on the stratigraphic mapping herein.Finally, the palynology results from this study indicate there is an important change in the depositional environment across the lowermost wave-ravinement surface because the first appearance datum for the dinoflagellate Chatangiella sp. cf. C. spectabilis occurs abruptly above this wave-ravinement surface. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.