Tupper Rock, Bandon, Coos Co., Oregon, USA
Latitude & Longitude (WGS84): | 43° 7' 6'' North , 124° 25' 42'' West |
---|---|
Latitude & Longitude (decimal): | 43.11833,-124.42833 |
Köppen climate type: | Csb : Warm-summer Mediterranean climate |
An elevated sea stack that was leveled by quarrying and no longer exists, with the site covered by a retirement home. Late Jurassic blueschist was obtained there and used to construct the Coquille River Jetty in Bandon, where samples can be seen (but not collected). The blueschist was part of a tectonic mélange formed in subduction zone, and metamorphosed under high-pressure, low-temperature conditions.
Mineral List
2 valid minerals.
Regional Geology
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
Holocene - Pleistocene 0 - 2.588 Ma ID: 2908902 | Terrace, pediment, and lag gravels Age: Pleistocene (0 - 2.588 Ma) Description: Unconsolidated deposits of gravel, cobbles, and boulders intermixed and locally interlayered with clay, silt, and sand. Mostly on terraces and pediments above present flood plains. Includes older alluvium of Smith and others (1982) in the Klamath Mountains and both high- and low-level terraces along Oregon coast. Includes dissected alluvial fan deposits northeast of Lebanon, and Linn and Leffler Gravels of Allison and Felts (1956) Comments: In OR291, includes terrace levels 60 m and 20-30 m above Grande Ronde Valley floor. Lower terrace dated as Pleistocene based on radiocarbon date of a mammoth tooth of 15,280+180 yr B.P. In OR292, includes a terrace that stands 20 m above the modern valley floor along the south side of the Umatilla River. Gravel also deposited above the present channel of the middle reach of the Umatilla River Lithology: Major:{gravel,boulders,clay}, Minor:{silt,sand} Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133] |
Quaternary 0 - 2.588 Ma ID: 1540295 | Quaternary surficial deposits; Coastal terrace deposits Age: Pleistocene (0 - 2.588 Ma) Description: Quaternary marine terrace deposits; 2ft-100ft thick; mixed grained sediments Lithology: Major:: {mixed fluvial sediment} Reference: R.L. Smith, W.P. Roe (compilers). Oregon Geologic Data Compilation, release 6. State of Oregon Department of Geology and Mineral Industries. [20] |
Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License
Tupper Rock, Bandon, Coos Co., Oregon, USA