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Please Turn On Your Sound To Hear Virtual Tour Narration Excerpts
Views on the Bowser Creek Area
By Lee Armstrong
Chief Geologist and Mining Engineer for the Longyear drilling company,
and a mineral consultant for the Chase Manhattan Bank.
Even though Dr. Armstrong had not visited Bowser Creek, out of a long time friendship with my father he reviewed the published reports and came up with a few suggestions on exploring the upper basin, as extracted:
... Assuming the above concept is correct, or essentially so, the problem of ore-body hunting becomes one of looking for a locality where all four of the ore-fluid properties (temperature, pressure, concentration and persistency of flow) were in optimum balance for a long enough period to build a substantial ore-body. The most likely hunting place, in my opinion, would be in the hoods of intruslves, particularly in the hoods of breccia pipes and in the country rocks resting on these hoods.
... Chances of finding concealed mineralized hoods are judged to be good enough to merit further exploration.
... It is felt that the area of prime interest lies between the two breccia pipes. Emplacement of the pipes was apparently controlled by a strong northwest fault or fault system, and it is not improbable that this entire northwest-trending system in the upper Bowser Creek area was Invaded by bodies of Igneous breccia ósome of which may have apexed at a lowered elevation than the two exposed bodies. In other words, the hoped-for target in the area between the two pipes would be a hidden pipe or tongue of breccia with its mineralized hood and possibly its capping of fractured and mineralized country rock still remaining, or only partially destroyed by erosion. The small (and apparently only partially decapitated) granodiorite stock outcropping near the head of Bowser Creek adds to the interest of this area as potentially productive ground. The faults and fold axes converging toward this small stock contribute further to the appeal of this area as an exploration target.
Given that the State of Alaska mapped the "strong northwest fault," Armstrong's suggestion of a geophysical survey exploring for the source of the high stream sediment sampling is an absolute given, along with a cat blade opening up our trench, and possibly moving one of Sharp's drill holes further upstream.
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