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The stratigraphic position of artefacts of undoubted Pleistocene age found in the Old Crow Basin has long been in question. We report on geological, palaeontological and archaeological excavations and studies there which show that artefacts made by humans occur in deposits of Glacial Lake Old Crow laid down before Sangamonian time, probably during a phase of the Illinoian (=Riss) glaciation. The geological events surrounding and following the deposition of Glacial Lake Old Crow were complicated by a changing lake level, localized soft-sediment flowage, pingo formation and dissolution, and by the colluvial transport of vertebrate fossils and artefacts. Following deepwater stages of the Lake, an environment not greatly different from that of the present is suggested by the excavated vertebrate fauna and by permafrost features, although warming during the succeeding Sangamon can be considered likely. Sangamonian and later phenomena in the Old Crow Basin are referred to briefly; they show that humans persisted in the area for some time.
originally posted by: punkinworks10
a reply to: punkinworks10
I have been looking into the origins of the cobbles,
They are the glue that binds this altogether.
The andesite cobbles come from a miocene deposit laid down by a mega flood from volcanic regions to the south in mexico.
These cobbles are found at the base of the "terraces". The terraces are low bluffs that parallel the coast, a few miles inland.
This site lies on top of the terraces, both uphill and upstream of the nearest source for the cobbles.
The pegmatite cobble originates from a river channel a couple of miles to the north, for that cobble to get there, it had to cross a low ridge, and several small stream and go uphill to get to the site.
Those cobbles are very special indeed.