Answers are grounded in this paper and cite their sources.
Massive bodies of ground ice, 2.0–4.0 m thick, are regularly exposed in small placer mining operations in the Klondike District, Yukon. At Mayes claim, Hunker Creek, the ice is underlain by 2.0–3.0 m of creek gravels and overlain by 10.0–15.0 m of organic-rich and ice-rich muck deposits. The crystallographic and petrographic characteristics of the ice and its stratigraphic occurrence suggest that the ice body either had a segregation origin or was a residual snowbank subsequently buried by muck deposits and recrystallized.
No takes yet. Share an insight, caveat, or question.
French et al. (1986) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: