What kind of tracer -- distant or local?
How about the schists in Westwater. Too similar to Vishnu?
Uintah Mountain Quartzite. It's been a long time since the Wasatch Lake.
Navajo Mountain. Abajo Mountains. Henrys. La Sals. Uncompagre.
How will the model sort out the presence of this material as a secondary
lacustrine deposit? Suppose the river deposits this material very high up
and later a lake forms just beneath the deposit and the deposit is washed
into the lake making it secondarily lacustrine. Or suppose that the river
washes into the lake and its sediment becomes both riverine and lacustrine.
The model I see is that if distant tracers are not found in the sediment,
the deposit is not riverine but originates in side canyons that have had no
river waters in them. Does this wash (so to speak)?
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