Rick Minor

• Heritage Research Associates, Inc.

Historical developments on the flood-prone terraces below Willamette Falls involved deliberate modification of the landscape through construction of artificial ground. Evidence of this practice was found on the north side of the Oregon City Woolen Mill, built in 1864–1865, where at various times a saloon, hotel, and grocery stood before 1890, when...

Netarts Bay is the setting of one of the largest concentrations of late prehistoric Native American settlements on the tectonically active Oregon coast. A prehistoric site (35TI74) exposed by sea cliff erosion in 1998 at the south end of the Netarts littoral cell contained a stratigraphic record of activity by prehistoric Native Americans and inter...

The upper reaches of the lower Columbia River Valley (125 km in length) comprise an alluvial system that is transitional between fluvial and fluvial–tidal dominance. Sinuous channels separate elongate islands (1–8 km in length) and floodplains (0.5–12.7 km in total width). Thirty-six floodplain overbank deposits are analyzed for age and depth, whic...

Peterson, C.D.; Gates, E.B.; Minor, R., and Baker, D.L., 2013. Accommodation space controls on the latest Pleistocene and Holocene (16–0 ka) sediment size and bypassing in the Lower Columbia River Valley: a large fluvial–tidal system in Oregon and Washington, USA. In this study, we establish the roles that increasing basin accommodation space have...

Seven tephra layers in the submerged fill of the Lower Columbia River Valley (LCRV) are radiocarbon dated (0.5–13 ka in age). They are correlated to reported eruption sources in the adjacent Cascade Range volcanic arc. The tephras provide a stratigraphic framework for the transgressive depositional filling of the tidal Columbia River system (∼200 k...

Geomorphic landscape development in the pre-Holocene ancestral Columbia River Valley (1–5km width) in the Portland forearc basin (~50km length) is established from depositional sequences, which pre-date and post-date the glacial Lake Missoula floods. The sequences are observed from selected borehole logs (150 in number) and intact terrace soil prof...

Prominently mentioned in the Lewis and Clark journals, the Kathlamet were devastated by infectious diseases and gradually lost their identity as a distinct, local Chinookan group in the historical record. In part because of the alleged abandonment of the Kathlamet village about 1810, the Kathlamet were subsumed under the Lower Chinook in the princi...

The Raymond's Dune site (35CU62) in Curry County, Oregon, is mainly known for a radiocarbon assay of 3,000 ± 90 B.P. that for many years was the oldest archaeological radiocarbon date from the southern Northwest Coast. Although often mentioned in the archaeological literature, a comprehensive report on this site was never prepared. This article rec...

Fire hearths associated with prehistoric Native American occupation lie within the youngest buried lowland soil oft he estuaries along the Salmon and Nehalem rivets on the northern Oregon coast. This buried soil is the result of sudden subsidence induced by a great earthquake about 300 years agi along the Cascadia subduction tone, which extends off...

Typescript. Thesis (Ph. D.)--University of Oregon, 1983. Vita. Includes bibliographical references (leaves 222-234). Photocopy.

A hydration rate for obsidian of 1.3μ m2 per 1,000 radiocarbon years has been calculated for the lower Columbia River Valley of Oregon and Washington. The rate provides a means for dating prehistoric archaeological sites containing obsidian in terms of their radiocarbon age.