Areas affected by Carmacks volcanism may be epithermal. However look at this below for the possible extents of the Indian River Conglomerate, which has much mesothermal veining.
"The IRF is in unconformable contact with a basement of Proterozoic/Paleozoic igneous and metamorphic rocks (including gneiss, schists and quartzite), and is locally intruded by, and overlain by, volcanic rocks belonging to the Haystack andesite and Carmacks Group (Fig. 2). It is bound to the north by the Indian River fault and to the west by the Ruby Creek fault. Documented outcrop exposures extend as far south as Henderson Dome and as far east as Eureka Dome (Fig. 2). At many localities, the IRF is overlain by recent gravel deposits and the contact may be indistinct where the conglomerate is unconsolidated."
Also, do you want epithermal? The average epithermal body worldwide is only a million tons. They have the odd giant of that category, so people get all excited. In fact Canadian quartz dominated lode gold deposits of mesothermal and higher temperatures are most frequently larger than one million tons, particularly in the one gram/T + category. An average sized deposit of this type to 400 foot depth would be in the region of 10 million tons or more. some are in the 100 to 400 million ton range. McIntyre, Hollinger, Kerr Addison, Lamaque, Detour etc. |
