Willamette meteorite, West Linn, Clackamas Co., Oregon, USA
|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.
|Quaternary - Tertiary0 - 66 Ma||Tertiary-Quaternary volcanic: mafic rocks|
Volcanic: mafic rocks
|Quaternary0 - 2.588 Ma||Missoula (Bretz) Flood deposits|
10m-24m thick; fine grained sediments
|Holocene0 - 0.0117 Ma||Alluvial deposits (Holocene)|
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 Ma||Miocene-Pliocene volcanic rocks|
May include hypabyssal intrusions.
References for regional geology:
Data provided by Macrostrat.org
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.