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Photo 2021-150: Aerial view of Ediacaran-Cambrian stratigraphy exposed at study site, looking northwest. Dark-weathering shale of Sheepbed Formation underlies the  ...
Number:
2021-150
Caption:
Aerial view of Ediacaran-Cambrian stratigraphy exposed at study site, looking northwest. Dark-weathering shale of Sheepbed Formation underlies the recessive, grassy slope at lower right. Carbonate marker labelled within upper member of Backbone Ranges Formation corresponds to unit 16 in measured section 08MWB-S2. Approximate route of measured section 08MWB-S4 (lower and middle members, Backbone Ranges Formation) is shown; see section notes in text for geographic coordinates. Measured section 08MWB-S5 (Sheepbed carbonate) was measured along an east-west creek that is out of frame of photograph, between photographer and exposures in the foreground. Measured sections 08MWB-S2 (upper member, Backbone Ranges Formation) and 08MWB-S3 (Sekwi Formation) were measured further west along the same wall of the cirque.
Date:
2018 07 31
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.44 MB
4000x3000 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-151: Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. A. Dark grey shale and  ...
Number:
2021-151
Caption:
Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. A. Dark grey shale and siltstone, uppermost Sheepbed Formation (unit 1). Hammer is approximately 32 cm long.
Date:
2008 07 21
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.70 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-152: Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. B. Very thin- to thin-bedded  ...
Number:
2021-152
Caption:
Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. B. Very thin- to thin-bedded dolostone (pale weathering) and limestone (dark-weathering, at top of photograph, and as very thin interbeds in basal part of photograph), basal part of Sheepbed carbonate (unit 5). Black marks on hammer handle are 10 cm apart.
Date:
2008 07 21
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.62 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-153: Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. C. Transition from  ...
Number:
2021-153
Caption:
Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. C. Transition from thin-bedded lower interval of Sheepbed carbonate into resistant-weathering, thick-bedded carbonate. Base of exposure is base of unit 9; base of cliffs corresponds to base of unit 11. Person in foreground is 1.75 m tall.
Date:
2008 07 21
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.71 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-154: Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. D. Thick bed of  ...
Number:
2021-154
Caption:
Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. D. Thick bed of dolorudstone, consisting of variously sized, irregularly shaped clasts of locally derived carbonate (unit 11). Black marks on hammer handle are 10 cm apart.
Date:
2008 07 21
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.30 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-155: Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. E. Very thin- to thin-bedded  ...
Number:
2021-155
Caption:
Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. E. Very thin- to thin-bedded dolostone with dolomitic siltstone as partings between beds (unit 20). Note convolute bedding (arrow). Black marks on hammer handle are 10 cm apart.
Date:
2008 07 21
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.64 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-156: Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. F. Thin- to medium-bedded  ...
Number:
2021-156
Caption:
Photographs of Sheepbed Formation and Sheepbed carbonate, measured section 08MWB-S5; unit numbers refer to this section. F. Thin- to medium-bedded dolostone (unit 21). The main layering visible is steeper than regional dip, which roughly corresponds to the bounding surface at the top of the outcrop. Hammer handle is approximately 30 cm long.
Date:
2008 07 21
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.84 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-157: Photographs of lower member, Backbone Ranges Formation, measured sections 08MWB-S4A and 08MWB-S4B. Unit numbers include letter
Number:
2021-157
Caption:
Photographs of lower member, Backbone Ranges Formation, measured sections 08MWB-S4A and 08MWB-S4B. Unit numbers include letter "A" or "B" to indicate which leg of section is referred to. See section descriptive notes in text for geographic coordinates. A. Contact between grey-weathering, resistant carbonate of Sheepbed carbonate and basal, silty sandstone of lower member, Backbone Ranges Formation (unit 1A). Note relief on contact (dotted line) and onlap of silty sandstone against the contact. Above silty sandstone is a cliff-forming, sharp- to erosionaly based package of thick-bedded sandstone to pebbly sandstone with well-developed planar-tabular cross-bedding (unit A2), overlain in turn by additional, recessive siltstone and sandstone (unit 3A). Stratigraphic thickness of unit A2 is approximately 10 m.
Date:
2008 07 20
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.01 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
Use of images
Images can be obtained from the NRCan Photo Collection for use in publications or research. The images contained in this archive are subject to the


Photo 2021-158: Photographs of lower member, Backbone Ranges Formation, measured sections 08MWB-S4A and 08MWB-S4B. Unit numbers include letter
Number:
2021-158
Caption:
Photographs of lower member, Backbone Ranges Formation, measured sections 08MWB-S4A and 08MWB-S4B. Unit numbers include letter "A" or "B" to indicate which leg of section is referred to. See section descriptive notes in text for geographic coordinates. B. Brown-weathering, interbedded sandstone and siltstone (unit B2). Hammer is approximately 32 cm long.
Date:
2008 07 20
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.54 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-159: Photographs of lower member, Backbone Ranges Formation, measured sections 08MWB-S4A and 08MWB-S4B. Unit numbers include letter
Number:
2021-159
Caption:
Photographs of lower member, Backbone Ranges Formation, measured sections 08MWB-S4A and 08MWB-S4B. Unit numbers include letter "A" or "B" to indicate which leg of section is referred to. See section descriptive notes in text for geographic coordinates. C. Sandy dolostone with current-ripple cross-lamination and possible hummocky cross-stratification (unit B7). Black marks on hammer handle are 10 cm apart.
Date:
2008 07 20
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.32 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-160: Photographs of lower member, Backbone Ranges Formation, measured sections 08MWB-S4A and 08MWB-S4B. Unit numbers include letter
Number:
2021-160
Caption:
Photographs of lower member, Backbone Ranges Formation, measured sections 08MWB-S4A and 08MWB-S4B. Unit numbers include letter "A" or "B" to indicate which leg of section is referred to. See section descriptive notes in text for geographic coordinates. D. Thick- to very thick-bedded coarse-grained to pebbly quartz arenite with well-developed cross-bedding (unit B9). Person is 1.75 m tall.
Date:
2008 07 20
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.82 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
Use of images
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Photo 2021-161: Photographs of middle member, Backbone Ranges Formation, measured section 08MWB-S4B. See section descriptive notes in text for geographic  ...
Number:
2021-161
Caption:
Photographs of middle member, Backbone Ranges Formation, measured section 08MWB-S4B. See section descriptive notes in text for geographic coordinates. A. Pink-weathering, very thin to thin beds of limestone (unit 15B); red mudstone partings can be seen adhering to bedding surfaces of broken slabs below hammer, and as dark partings or very thin interbeds between beds of limestone. Black marks on hammer handle are 10 cm apart.
Date:
2008 07 20
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.12 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-162: Photographs of middle member, Backbone Ranges Formation, measured section 08MWB-S4B. See section descriptive notes in text for geographic  ...
Number:
2021-162
Caption:
Photographs of middle member, Backbone Ranges Formation, measured section 08MWB-S4B. See section descriptive notes in text for geographic coordinates. B. Pink limestone with beds of intraclast rudstone (flat-pebble conglomerate) to right of hammer handle (unit 16B). Black marks on hammer handle are 10 cm apart.
Date:
2008 07 20
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.96 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-163: Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates.  ...
Number:
2021-163
Caption:
Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates. A. Blocky, resistant-weathering cliffs of thick to very thick-bedded quartz arenite with cross-bedding at numerous levels (unit 4). Person is 1.85 m tall.
Date:
2008 07 19
Photographer:  
Fallas, K M
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.25 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
Use of images
Images can be obtained from the NRCan Photo Collection for use in publications or research. The images contained in this archive are subject to the


Photo 2021-164: Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates.  ...
Number:
2021-164
Caption:
Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates. B. Maroon siltstone and very thin beds of quartz arenite (unit 12). Measure stratigraphic thickness of dark maroon-weathering package, from base of exposure to base overlying, grey-weathering quartz arenite, is 27 m.
Date:
2008 07 19
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.04 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-165: Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates.  ...
Number:
2021-165
Caption:
Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates. C. Tan- to cream-weathering dolostone and sandy dolostone (unit 16), identified by MacNaughton and Fallas (2019a) as a possible tongue of the Risky Formation. Hammer is approximately 32 cm long.
Date:
2008 07 19
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
3.49 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Images can be obtained from the NRCan Photo Collection for use in publications or research. The images contained in this archive are subject to the


Photo 2021-166: Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates.  ...
Number:
2021-166
Caption:
Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates. D. Maroon silty sandstone interbedded with pink to tan, cross-bedded quartz arenite; contact between units 20 and 21 is at base of thick bed of sandstone at top of photograph. Black marks on hammer handle are 10 cm apart.
Date:
2008 07 19
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.69 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-167: Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates.  ...
Number:
2021-167
Caption:
Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates. E. Thin-bedded sandstone interbedded with siltstone, uppermost part of unit 25. Tan to orange talus to right of snow patch higher on slope is dolostone at the base of the Sekwi Formation. Hammer is approximately 32 cm long.
Date:
2008 07 19
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.94 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-168: Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates.  ...
Number:
2021-168
Caption:
Photographs of upper member, Backbone Ranges Formation, measured section 08MWB-S2. See section descriptive notes in text for geographic coordinates. F. Polygonal mud cracks in maroon and green siltstone (unit 25). Black marks on hammer handle are 10 cm apart.
Date:
2008 07 19
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.78 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-169: Photographs of Sekwi Formation, measured section 08MWB-S3. See section descriptive notes in text for geographic coordinates. A. Overview of section  ...
Number:
2021-169
Caption:
Photographs of Sekwi Formation, measured section 08MWB-S3. See section descriptive notes in text for geographic coordinates. A. Overview of section 08MWB-S3. Base of Sekwi Formation corresponds to upward change from grey, cliff-forming quartz arenite to tan and pale orange, recessive-weathering dolostone and siltstone (unit 1 of section). Semi-resistant knob partway up the section includes units 3-6. Base of Rockslide Formation is at base of resistant limestone outcrop rib (unit 23) at top of photograph. Person is 1.75 m tall. Note prevalence of maroon-weathering siltstone in numerous levels in Sekwi Formation.
Date:
2008 07 19
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.68 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Images can be obtained from the NRCan Photo Collection for use in publications or research. The images contained in this archive are subject to the


Photo 2021-170: Photographs of Sekwi Formation, measured section 08MWB-S3. See section descriptive notes in text for geographic coordinates. B. Abrupt contact  ...
Number:
2021-170
Caption:
Photographs of Sekwi Formation, measured section 08MWB-S3. See section descriptive notes in text for geographic coordinates. B. Abrupt contact between orange dolostone of basal Sekwi Formation and underlying maroon siltstone of uppermost Backbone Ranges Formation; top of unit 25, section 08MWB-S2. Uppermost few centimetres of the siltstone are greenish-grey, probably reflecting reduction of iron.
Date:
2008 07 19
Photographer:  
MacNaughton, R B
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.99 MB
3264x2448 pixels
180 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Photo 2021-171: Zero edge of the upper member of the Backbone Ranges Formation. B. Photo taken at locality X by K.M. Fallas, looking south-southeast, showing Sekwi  ...
Number:
2021-171
Caption:
Zero edge of the upper member of the Backbone Ranges Formation. B. Photo taken at locality X by K.M. Fallas, looking south-southeast, showing Sekwi Formation strata directly (unconformably) overlying the middle member of the Backbone Ranges Formation. Abbreviations in photo as in legend of map A; 'Fm' = Formation; 'mbr' = member.
Date:
2008 07 18
Photographer:  
Fallas, K M
Collection:  
Natural Resources Canada
Hi-Resolution:  
2.29 MB
3872x2592 pixels
300 ppi (jpeg)
Geographic:  
Mackenzie Mountains; Northwest Territories
Publication Link:  
 
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Images can be obtained from the NRCan Photo Collection for use in publications or research. The images contained in this archive are subject to the


 
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