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Ingta Formation

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Journal Article
Journal: GSA Bulletin
Published: 01 October 1994
GSA Bulletin (1994) 106 (10): 1281-1292.
... isotopic excursions; in contrast, δ 13 C values for Gametrail through Risky carbonates vary only within the narrow range of about +1‰ to +2‰. A second negative excursion occurs in Ingta Formation carbonates that immediately underlie the paleontologically determined Precambrian-Cambrian boundary. The upper...
Journal Article
Published: 01 June 1995
Canadian Journal of Earth Sciences (1995) 32 (6): 718-729.
... from 4 sites, k = 18, α 95 = 11°) and pole at 007°E, 29°S (δ p , δ m = 14°, 18°), and indicates a paleolatitude of 46 ± 14°S. Comparison between poles from the Risky and the overlying Backbone Ranges and Ingta formations suggests a profound post-Risky unconformity. Three secondary components are also...
Journal Article
Published: 01 March 2014
Journal of Paleontology (2014) 88 (2): 309-330.
... utilization. Cambrian strata of the Ingta Formation contain systematically meandering burrows and more diverse feeding strategies, including the onset of treptichnid probing burrows that may reflect predation. These observations imply that Ediacaran burrowers were largely characterized by crude, two...
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Journal Article
Published: 01 July 1997
Journal of Sedimentary Research (1997) 67 (4): 622-637.
...Robert B. MacNaughton; Robert W. Dalrymple; Guy M. Narbonne Abstract Earliest Cambrian siliciclastic strata in the Mackenzie Mountains (Ingta, Backbone Ranges, and Vampire Formations) contain deposits of a variety of shelf, nearshore, and fluvio-deltaic depositional environments. The strata contain...
Image
Figure  1 —Map of northwestern Canada showing generalized stratigraphy, loc...
Published: 01 September 2006
Figure 1 —Map of northwestern Canada showing generalized stratigraphy, location of phosphatized embryos in the Ingta Formation, and detail of the Ingta Formation.
Image
Ediacara-style discs broadly similar to  Aspidella  or  Bergaueria  from pa...
Published: 01 March 2014
Figure 3 Ediacara-style discs broadly similar to Aspidella or Bergaueria from parasequence four of the Ingta Formation, locality IR. Scale bars=1cm.
Journal Article
Published: 01 March 2015
Journal of Paleontology (2015) 89 (2): 281-291.
... succession tentatively correlated with the uppermost Sheepbed Formation (Macdonald et al., 2013 ) to the top of the dolomitized Risky Formation ( Fig. 2 ). Regionally, the Risky Formation is overlain by siliciclastic strata of the Ingta Formation that may span the Ediacaran-Cambrian...
FIGURES | View All (4)
Image
Deposit feeding burrows, filter-feeding burrows, and arthropod burrows.  1 ...
Published: 01 March 2014
Figure 6 Deposit feeding burrows, filter-feeding burrows, and arthropod burrows. 1 , irregular network Vagorichnus preserved in positive hyporelief from parasequence three of the Ingta Formation, ROM 62569, locality IR; 2 , oblique lined burrow Palaeophycus tubularis from the upper
Journal Article
Published: 01 September 2005
Journal of Paleontology (2005) 79 (5): 987-996.
..., 1978a ). The Sekwi Formation is underlain by a thick succession of marine to continental siliciclastics with minor carbonate beds (Ingta, Backbone Ranges, and Vampire Formations) that include the Neoproterozoic–Cambrian boundary ( Narbonne and Aitken, 1995 ; MacNaughton et al., 1997...
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Journal Article
Published: 12 September 2017
Journal of Paleontology (2017) 91 (6): 1178-1198.
...Setareh Shahkarami; M. Gabriela Mángano; Luis A. Buatois Abstract Strata in the Central Alborz Mountains, northern Iran, are interpreted to show continuous sedimentation from Ediacaran through Cambrian times. The Soltanieh Formation consists of five members: Lower Dolomite, Lower Shale, Middle...
Image
Microbial grazing burrows and deposit feeding burrows.  1 , morphotype pres...
Published: 01 March 2014
Figure 5 Microbial grazing burrows and deposit feeding burrows. 1 , morphotype preserving meniscate arcuate laminae from the base of Plagiogmus in positive hyporelief from parasequence three of the Ingta Formation, ROM 62561, locality IR; 2 , morphotype preserving the central ridge
Journal Article
Published: 05 July 2000
Canadian Journal of Earth Sciences (2000) 37 (7): 997-1020.
...) and subtrilobite Cambrian strata (Ingta, Backbone Ranges, and Vampire formations) that cap the succession ( MacNaughton et al. 1997 a , 1997 b ). In this contribution, we document the sedimentology and sequence stratigraphy of the intervening units of the upper Windermere Supergroup, the Gametrail, Blueflower...
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Journal Article
Journal: GSA Bulletin
Published: 08 March 2019
GSA Bulletin (2019) 131 (9-10): 1673-1701.
... the Backbone Ranges, Vampire, and Ingta formations ( Fig. 2 ; Fritz, 1997 ; MacNaughton et al., 2000 ; Turner et al., 2011 ); these units are in turn overlain by various carbonate-dominated lower Paleozoic strata. The unconformity at the top of the Windermere Supergroup cuts into deeper levels toward...
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Journal Article
Published: 14 August 2013
Canadian Journal of Earth Sciences (2013) 50 (10): 1007-1018.
...) and Dewing et al. (2008) argued for the geological characteristics of the Grant Land Formation to indicate stratigraphic continuity with the latest Ediacaran to Cambrian siliciclastic influx widely recognized in the Mackenzie Mountains (Ingta Formation), Ellesmere Island (Archer Fiord and other formations...
Journal Article
Published: 01 June 2011
Bulletin of Canadian Petroleum Geology (2011) 59 (2): 172-194.
... Ranges, Vampire, Sekwi, and younger formations, with the Proterozoic/Cambrian boundary lying near the base of the Ingta Formation ( Fig. 3 ). Eastward transgression accompanied westward subsidence so that, within the study area, Early Cambrian strata directly overlie pre-Windermere Proterozoic rocks...
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Journal Article
Published: 26 March 2009
Geological Magazine (2009) 146 (4): 465-484.
... m) in shale successions deposited in an open marine subtidal environment (Brasier et al . 1990 ; Kimura et al . 1997 ). A more negative excursion (−9.3‰), situated in the thin beds of lime mudstone sporadically occurring at the base of the Ingta Formation, which consists predominantly of fine...
Image
Microbial grazing burrows.  1 , micropustular textures with undirected hori...
Published: 01 March 2014
on the same surface, ROM 62557, locality SBN; 5 , two-dimensional pseudo-spiral burrow from parasequence two of the Ingta Formation, ROM 62558, locality IR; 6 , Helminthopsis demonstrating crude avoidance from the lower Blueflower Formation. Black arrow indicates example of phobotaxis, ROM 62559, Locality
Journal Article
Published: 22 August 2001
Canadian Journal of Earth Sciences (2001) 38 (8): 1229-1262.
...Noel P. James; Guy M. Narbonne; T. Kurtis Kyser Abstract The 3–27 m-thick cap carbonate overlying “Marinoan” Ice Brook Formation glacigene sediments and Keele Formation carbonate and terrigenous clastic rocks consists of two distinctive stratigraphic units. A lower, splintery, buff-weathering...
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Image
Generalized stratigraphic column for the latest Neoproterozoic (Windermere ...
Published: 05 July 2000
Fig. 2. Generalized stratigraphic column for the latest Neoproterozoic (Windermere Supergroup) to sub-trilobite Cambrian succession in the Sekwi Brook and June Lake regions of the Mackenzie Mountains. Sheepbed Formation stratigraphy is after Dalrymple and Narbonne ( 1996 ). Stratigraphy of Ingta
Image
Stratigraphic column for uppermost Neoproterozoic and basal Cambrian strata...
Published: 05 July 2000
sequence-stratigraphic detail in the progressively shallower younger strata. Data for the Sheepbed Formation are from Dalrymple and Narbonne ( 1996 ) while data for the Ingta, Backbone Ranges, and Vampire formations are from MacNaughton et al. ( 1997 a , 1997 b ).