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Appendix D: Cross SectionA SW
A’ NE
Coal 0
Cross Section: Drumheller A-A’ Log Scale 1:100
The difference in correlation from East Coulee to Willow Creek Canyon is attributed to change in depositional environment. At the time of deposition the paleo shoreline was to the south east relative to Willow Creek Canyon (Ainsworth 2015). Note: In the field coal 0 and coal 1 were observed to be parallel however due to potential measurement or calculation errors they are recorded here as having unequal isopach between the two. Potential errors introduced to data:
Improper placement or movement tape measure on outcrop Improper correction calculation to vertical Due to distance between East Coulee and Willow Creek Canyon there may be errors in interpreted correlations.
The Lower portion of East Coulee was removed for purposes of correlation (see appendix B for full section)
Coal 1
Lithologies
Shale
Sandstone
Coal
Symbols
Horizontal planar lamination
Trough cross bedding
Hummocky cross stratification
Base Boundaries
Erosion
Gradational
Lithologies
Shale
Siltstone
Sandstone
Coal
Symbols
Horizontal planar lamination
Trough cross bedding
Hummocky cross stratification
Roots
Vertical burrows
Moderate bioturbation
Minor bioturbation
Current ripple cross-lamination
Horizontal burrrows
Base Boundaries
Gradational
Lithologies
Siltstone
Sandstone
Shale
Coal
Symbols
Mudclasts
Trough cross bedding
Horizontal planar lamination
Hummocky cross stratification
Roots
Base Boundaries
Gradational
Sharp
Legend
Bearpaw
Distributary Channel
Sand Dom. IHS
Mud Dom. IHS
Flood plain Tidal Flat
Tidal flat
A
A’
A’
51°23’13.05"N 112°30'43.81"W
51°23’8.31"N 112°30'56.88"W 51°23'6.40"N
112°31'10.30"W
51°23’1.80"N 112°31'20.08"W
51°22'56.95"N 112°31'26.71"W 51°22'53.70"N
112°31'34.18"W
51°20'29.21"N 112°29'38.67"W
5km
162m195m
228m259m
284m
