Lacustrine deposits

[1] A common characteristic of lacustrine deposits is that a river or stream channel has carried sediment into the basin.

Lacustrine deposits are typically very well sorted with highly laminated beds of silts, clays, and occasionally carbonates.

Oxbow lakes form lacustrine deposits from seasonal overbank flooding as well as precipitation runoff which refills these isolated basins with fresh water and new sediments.

Lacustrine deposits have gained more attention recently due to containing valuable source rocks of oil, coal, and uranium.

Lacustrine deposits generally provide productive mining conditions but can prove challenging when underground mines are attempted due to the poor shear strength of clays and silts as well as the amount of moisture often locked in the layers due to a low permeability characteristic of lacustrine deposits.