Thalweg facies

Channel Facies Thalweg Facies Slackwater Facies Diamicton Facies Backswamp Facies... 

Figure 11. Thalweg facies in Tytoona Cave, (a) Armor layer making up the surface of die stream bed sediments, (b) Sediment lying directly below surface layer. There is both a surface and a subsurface distribution for each sample site. These are keyed to die site numbers shown on figure 10 diamonds = site 1 solid squares = site 2 triangles = site 3 open circles = site 4 asterisks = site 5 solid circles = site 6.

Figure 12. Photo of thalweg facies in Butler Cave main stream charnel.

Clastic sediments deposited in conduit systems can be conveniently be divided into five facies depending on the mechanism of deposition. The channel facies comprises most observed sediment piles and can be subdivided further depending on the objectives of a particular investigation. Diamicton facies and slackwater facies are deposited from suspended loads. Channel facies and thalweg facies are transported as bedload. The backswamp facies is defined to describe those residual in infiltrated clastic sediments that are deposited in place with little horizontal transport. 

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