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Willamette meteorite, West Linn, Clackamas Co., Oregon, USA

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Latitude & Longitude (WGS84): 45° 22' North , 122° 35' West
Latitude & Longitude (decimal): 45.3666666667, -122.583333333

Iron meteorite (IIIAB, medium octahedrite) found in 1902; weighs over 14,000 kg. measuring 10 x 6 x 4.25 feet. Now located at the Rose Center for Earth and Space, American Museum of Natural History, New York City.

Mineral List

Regional Geology

Quaternary - Tertiary0 - 66 MaTertiary-Quaternary volcanic: mafic rocks

Volcanic: mafic rocks

Quaternary0 - 2.588 MaMissoula (Bretz) Flood deposits

Major:: {mixed catastrophic flood sediment, brown; zones: zones of brown clay and iron oxide mottling} Minor:: {sedimentary sand, mineralogy: micaceous quartzo feldspathic}

10m-24m thick; fine grained sediments

Holocene0 - 0.0117 MaAlluvial deposits (Holocene)

Major:: {sand},Minor:: {gravel},Incidental:: {silt, peat}

Sand, gravel, and silt forming flood plains and filling channels of present streams. In places includes talus and slope wash. Locally includes soils containing abundant organic material, and thin peat beds

Includes silt and fine sand deposited on broad benches adjacent to the Snake and Malheur Rivers by the Bonneville Flood (OR143; OR144; OR145; OR146) 14,000 years ago (late Pleistocene). In OR291, includes lacustrine silt, clay, and diatomite.

Pliocene - Miocene2.588 - 23.03 MaMiocene-Pliocene volcanic rocks

Volcanic rocks

May include hypabyssal intrusions.

References for regional geology:

Data provided by

Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .

USGS compilers. State geologic map data. State Maps.

Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.

R.L. Smith, W.P. Roe (compilers). Oregon Geologic Data Compilation, release 6. State of Oregon Department of Geology and Mineral Industries.

6 valid minerals.

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