USGS Professional Paper 1620, PDF), in the Corvallis area the Missoula silts are about 4-5 meters in thickness, but thicken rapidly northward/downstream along the Willamette main stem. This site is well north of my home, but I suspect that up on the hill, where the erratic rests, the thickness is much less than here on the valley floor.
Photo unmodified. July 10, 2012. FlashEarth location.
Is This Your Hat?
2 years ago