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Sedimentary deposits are formed from the accumulation of sediment over time. Sediment comes from the weathering and erosion of rocks, and it can be transported by water, wind, or ice before settling and eventually forming new rocks. These deposits can provide valuable information about the environmental conditions that were present when they formed.

In cold environmental conditions, the main types of nonmarine sedimentary deposits that can form are glacial deposits, periglacial deposits, and ice-contact deposits. - Glacial deposits are formed by glaciers, which are large, slow-moving masses of ice that shape the landscape through erosion and deposition of sediment. These deposits include till, glacial outwash, and moraines. 1. Till: A heterogeneous mixture of unsorted sediment (clay, silt, sand, gravel, and boulders) that is deposited directly beneath a glacier as it recedes. 2. Glacial outwash: A deposit of sorted and stratified sediment that has been transported by meltwater from a glacier and laid down in front of the ice. 3. Moraines: Ridges of unsorted sediment that form along the sides and front of a glacier as it recedes. - Periglacial deposits form in regions around the margins of glaciers or ice sheets, where the climate is cold but not cold enough for the formation of perennial ice. In periglacial environments, the sedimentary deposits include patterned ground and solifluction lobes. 1. Patterned ground: A regular arrangement of polygons, circles, or stripes formed by the repeated freezing and thawing of soil and the movement of sediment. 2. Solifluction lobes: Tongue-like landforms of saturated soil and sediment that move slowly downslope due to the freezing and thawing of the ground. - Ice-contact deposits form alongside or between bodies of ice and can include eskers, kames, and kettles. 1. Eskers: Long, sinuous ridges of sand and gravel that form when sediment is deposited in subglacial or englacial meltwater channels. 2. Kames: Small, rounded hills or mounds of poorly sorted sand and gravel that form when sediment is deposited by meltwater in a depression on the surface of a glacier. 3. Kettles: Depressions in the landscape left behind when a block of buried ice melts and the sediment around it collapses. To summarize, the nonmarine sedimentary deposits that reflect cold environmental conditions include glacial deposits (till, glacial outwash, moraines), periglacial deposits (patterned ground, solifluction lobes), and ice-contact deposits (eskers, kames, kettles).