Download or read book Upper Cambrian to Lower Ordovician Conodont Biostratigraphy and Biofacies Rabbitkettle Formation District of Mackenzie written by Ed Landing and published by University of Toronto Press. This book was released on 1980 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conodonts have been recovered from two sections through the Cambrian-Ordovician boundary beds of the upper Rabbitkettle Formation, near the headwaters of the Broken Skull River, western Mackenzie Mountains. This report contributes towards a biofacies evaluation of Cambrian-Ordovician boundary bed conodonts and illustrates the probable limitations on a highly resolved conodont-based correlation of this interval between strongly constrasting lithofacies.

Download or read book Upper Cambrian to Lower Ordovician Conodont Biostratigraphy and Biofacies Rabbitkettle Formation District of Mackenzie written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Upper Cambrian to Lower Ordovisian Conodont Biostratigraphy and Biofacies Rabbitkettle Formation District of Mackenzie written by Ed Landing and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Upper Cambrian and Lower Ordovician Trilobite Biostratigraphy of the Rabbitkettle Formation Western District of Mackenzie written by Rolf Ludvigsen and published by ROM. This book was released on 1982 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two measured sections of the upper Rabbitkettle Formation in the western District of Mackenzie are separated by a thrust fault. These sections provide a record of silicified tribobite faunas across the Cambrian-Ordovician boundary in open marine carbonate rocks along the deeper portion of the shelf - a North American palaeogeographic setting not previously extensively sampled for macrofossils.

Download or read book Upper Cambrian and Lower Ordovician Trilobite Biostratigraphy of the Rabbitkettle Formation Western District of Mackenzie written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biostratigraphy and Paleontology of Late Cambrian to Late Middle Ordovician Conodonts from Southwestern District of Mackenzie Northwest Territories written by Ravindra S. Tipnis and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ordovician strata of the South Nahanni River area occur both as a fine clastic facies in the Selwyn Basin (Rabbitkettle and Road River formations) and as carbonate facies with shelly faunas in the Root Basin (Broken Skull, Sunblood, Esbataottine, and Whittaker formations). The lithofacies are controlled by major tectonic features, namely the Redstone Arch, the Selwyn Basin and the Root Basin. Conodonts are present in rocks of both facies and are represented by distinctly dif ferent faunas. The carbonate facies of the Root Basin and the region immediately south of the Redstone Arch contains a complete record of shelly faunas of Canadian to at least Kirkfieldian age, and yields conodonts of pre dominantly Midcontinent type. A large component of the Canadian fauna consists of North Atlantic elements. Recognized here are the late Canadian Faunas D and E of Ethington and Clark (1971) and Middle Ordo vician Faunas 1-9, 10? of Sweet et al. (1971). The Broken Skull Formation generally consists of sequences of carbonates that are vari ably sandy and contains, in its highest parts, the late Canadian Faunas D and E and earliest Whiterockian Faunas 1 and ?2. The Sunblood Forma tion consists of generally resistant, red-orange-buff weathering limestones and minor dolostones and contains conodonts diagnostic of Whiterockian Faunas (?2-4) and Chazyan Faunas 5 and 6. The Esbataottine Formation proposed by Ludvigsen (1975) comprises moderately recessive, grey-buff weathering limestone and contains upper Fauna 6, Fauna 7, and lower Fauna 8. The lower Whittaker Formation consists of limestones, dolostones and shales, and contains conodonts belonging to Faunas 8, 9 nd ?10 (Rocklandian to ? early Shermanian). Conodonts from the clastic facies of the Selwyn Basin are pres ent in the Rabbitkettle and Road River formations. The thin-bedded argillaceous limestones of the Rabbitkettle Formation yield sparse but distinctive Late Cambrian ( Proconodontus Zone of Miller, 1975 to ear liest Ordovician (Faunas A, ?B) conodonts. Their biogeographic affinities are unclear. The argillaceous limestones of the Road River Formation contain a diverse and fairly rich North Atlantic type conodont fauna, including Oepikodus evae (Lindstrom), Eoplacognathus planus (Sergeeva), Pygodus serrus (Hadding) and Amorphognathus superbus (Rhodes). The restriction of the Midcontinent faunas to the carbonate de posits of the southern Mackenzie platform and that of the North Atlantic fauna to the deepwater clastic facies of the Selwyn Basin, clearly emphasizes the dependency of these two biogeographic faunas on ecologi cal factors present. Based on the study of conodonts from both the Root and Selwyn basins, the following distributional pattern emerges for the Middle Ordovician conodonts, arranged in approximate order from biofacies close to paleoshore to those farther away, on the continental slope: 'Biofacies' I, near shore dominated by 'Fibrous' conodonts; 'Biofacies' II, shallow shelf, dominated by Plectodina ; 'Biofacies' III, deep shelf, dominated by Phragmodus ; and 'Biofacies' IV, slope/basinal, dominated by Periodon/Amorphognathus . The total conodont fauna studied can be assigned to 41 multi- elemental genera, 18fom genera; 96 multielemental species , 70 foim species and one subspecies. Of these 4 multielement genera, 14 multielemental species, 3 form genera, 5 form species and one subspecies are new.

Download or read book Conodont Biofacies and Provincialism written by David Leigh Clark and published by Geological Society of America. This book was released on 1984 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1984 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Upper Cambrian and Lower Ordovician Tribolite Biostratigraphy of the Rabbitkettle Formation Western Distric of Mackenzie written by Rolf Ludvigsen and published by . This book was released on 1892 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Short Papers for the Second International Symposium on the Cambrian System 1981 written by and published by . This book was released on 1981 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ordovician to Triassic Conodont Paleontology of the Canadian Cordillera written by Geological Survey of Canada and published by . This book was released on 1991 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation is a synthesis of Ordovician-Triassic conodont research undertaken in the Canadian Cordillera during the past decade. The studies include an overview of the record in Western Canada; a review of the paleontology; and descriptions of conodonts from the Cordillera Road River group in northern Yukon Territory, from the eastern and northern Canadian cordillera, of the Palliser Formation in the Rocky Mountains, and from the Cache Creek Complex in south-central B.C.

Download or read book Aspects of the Ordovician System written by David L. Bruton and published by Oxford University Press, USA. This book was released on 1984 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Bulletin written by and published by . This book was released on 1983 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidebook s for Field Trip s Cambrian stratigraphy and paleontology of the Great Basin and vicinity western United States written by and published by . This book was released on 1981 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Bulletin written by J. F. Evernden and published by . This book was released on 1983 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin Geological Survey of Canada written by Geological Survey of Canada and published by . This book was released on 1991 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology of the Cordilleran Orogen in Canada written by Geological Survey of Canada and published by Geological Survey of Canada, 1992 [i.e. 1991]. This book was released on 1992 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: