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Surficial Geological Map of Black Hills Creek (115O/7) and Parts of 115O/2, 115O/6 and 115O/10, Stewart River, Yukon
Surficial geological map (1:50,000 scale) of Black Hills Creek map area, Stewart River, central Yukon (NTS 115O/7 and parts of 115O/2,6,10) including marginal notes on surficial geology and geomorphology.
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Surficial Geological Map of Stewart River Valley, parts of 115O/8, 115P/5 and 115P/12
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Geological map (1:50,000 scale) of southeastern Ogilvie Mountains area, central Yukon (NTS 116A/10) including geological cross sections and mineral occurrences.
Surficial Geological Map of Stewart River Valley (parts of 115O/2, 3, 6 and 7)
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Surficial geological map (1:50,000 scale) of Stewart River Valley, central Yukon parts of NTS map sheets 115O/2,3,6,7 including marginal notes on surficial geology, geomorphology and placer occurrences.
Surficial Geology of Matson Creek and Ogilvie, NTS 115N/9 and 1150/12
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Surficial geological map (1:50,000 scale) of Matson Creek and Ogilvie map areas, central Yukon (NTS 115N/9 and 115O/12) including marginal notes on surficial geology and geomorphology.
Surficial Geological Map of Stewart River Valley (Parts of 115O/8, 115P/5, 12)
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Geological Map of Dolores Creek Map Area (106C/14), Wernecke Mountains, Yukon
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Geological map (1:50,000 scale) of "Dolores Creek" area, Wernecke Mountains, central Yukon (NTS 106C/14) including geological cross-sections and mineral occurrences.
Placer geology of Black Hills Creek (Parts of 115 O/7 and 10)
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Mapping in the Black Hills Creek drainage has identified auriferous gravel resources in valley bottom and terrace deposits of the main stream. Both low-level and high-level terrace gravels and modern floodplain contain fine gold grains. Bulk gold counts determined from sluice box testing of 57 samples indicates concentrations decrease in the downvalley direction. Geochemical analysis of matrix samples (finer than 60 mesh) mimics bulk results. The apparent lower concentration of detrital gold in a downstream direction may be explained by lack of bedrock sources and insignificant enrichment from tributaries. Bedrock terraces high above the creek level record periods of stability at high base levels which was followed by incision and aggradation of alluvial sediments in late Tertiary(?) time. Thick sediments in low-level terraces indicate a long period of aggradation followed by organic accumulation. Holocene activity has degraded the valley fill and redistributed sediment downstream in fining upward meander stream deposits. Permafrost is present in black muck sequences.