Unconsolidated surficial deposits, undivided

Unit symbol: Qs
Age range Quaternary (1.806 to 0 Ma)
Lithology: Unconsolidated
Group name: Unconsolidated and poorly consolidated surficial deposits
Unconsolidated, poorly to well-sorted, poorly to moderately well-stratified deposits; consist predominantly of alluvial, colluvial, marine, lacustrine, eolian, and swamp deposits. May include some glacial deposits. Also includes widespread glacial and periglacial deposits that consist of end, lateral, and ground moraine, outwash, rock glacier deposits, and other glacial and periglacial deposits as well as glacially scoured bedrock that may be covered with thin, glacially derived deposits. These glacial deposits are of Holocene and Pleistocene age and may include small areas of potentially latest Tertiary deposits. Map unit locally includes reworked volcanic debris as well as block and ash flows. On generalized map, shown as part of unit QTs

Source map information

Source map Weber, F.R., Wheeler, K.L., Rinehart, C.D., Chapman, R.M., and Blodgett, R.B., 1992, Geologic map of the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 92-562, 19 p., scale 1:250,000.
Symbol Qg
Unit name Reworked creek gravels in placer mining areas
Description Placer-mine tailings derived from buried stream gravels worked for gold by methods of pick and shovel, mechanized surface, underground drifting, or dredging methods; shown as map scale permits, on Fairbanks and Livengood Creeks, elsewhere included in Qa. Commonly less than 9 m thick
Lithology Unconsolidated

Correlated geologic units

Label Qpm
Description Placer and anthropogenic deposits
Geologic age Holocene
Geologic setting Unconsolidated
Lithology Form Importance
Boulders < Coarse-detrital < Unconsolidated Tailings Major
Gravel < Coarse-detrital < Unconsolidated Tailings Indeterminate, major