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Upper Oxfordian to Albian Geology, Mackenzie Delta, Arctic Canada
Over 2500 m of upper Oxfordian to Albian terrigenous clastic rocks are known to be present in the subsurface of the Mackenzie Delta area. These rocks were deposited during at least six major depositional-episodes. Marine conditions prevailed during most of the episodes, with one major phase of alluvial sedimentation in the late Valanginian-early Hauterivian. The source of clastic sediment was predominantly from a southerly direction but during the late Hauterivianearly Barremian and Aptian a local northerly source probably existed. During the late Oxfordian to Aptian depositional-episodes, the basin margin tended to oscillate across the NE-SW-trending Eskimo Lakes Arch. A major basin expansion occurred at the end of the Aptian and the Mackenzie Delta area became the site of mid-to outer-shelf mud deposition during the Albian.
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