The strata Dr. Palmer found at Tina Bar are as follows: a profile of his strata is attached.
'Fig 3a. Sediment replenishment profile at the Tena Bar Recreational area near Portland, 1980.
Dr. Palmer’s trench dug near the money find revealed approx four layers.
(a) upper active sand layer. 6-8 inches six inches of reworked sand where all of the fragments and bundles of the recovered money was found, according to Palmer.This sand contained soda pop cans and other debris of a recent origin, not severely damaged or rusted. The upper six inches to eight inches of reworked beach sand is the active layer which is currently being worked on by natural forces and water from the Columbia River. The money and fragments were distributed in the upper surface layer only, and none were found in the post dredging layer. With this height on the beach it suggests the money was deposited more than four years after the dredging work at Tena Bar in 1974. The money did not work its way up through the post dredging sand to the upper layer, according to Dr. Palmer.
(b) post dredging sand layer. The post dredging sand contained older soda pop cans, rusted nails and spikes, and other rusted and more deteriorated artifacts vs. artifacts found in the upper active layer. This post dredging sand is cross bedded course and medium sand as a result of the river and river waves have worked repeatedly on this layer since 1974.
(c) clay lump (dredge) sand layer. The clay lump dredging layer was a mixture of course sand and fragments of organic clay, ranging from one to five inches in size. This layer ranged in depth from two feet where the money was found, to approximately four feet deep 25 yards from the money site which is coincidently closer to the north-most 1974 dredging spoil dump sites.
(d) older sand layer. Older sands were found below the 1974 clay lump (dredge) layer, and were light in color and uniform in texture, with evidence of cross bedding.
Note* Dr. Palmer stresses that Cooper money, as far as he is concerned, was found only in the upper layer of sand, and none was found below that level in the post-dredging layer, or deeper. The recently found KATU video challenges that interpretation/claim.
Moreover, Dr. Palmer said that the upper active layer of sand on beach is "sterile" which in his opinion accounted for why any money had survived at all in Nature since 1971, which also supported the idea that the money was a recent arrival on Tina Bar, having arrived probably within the last year.
-see facsimile of Palmer strata chart attached -