TheCarnon River(Cornish:Avon Carnon) is a heavily polluted river inCornwall,England, United Kingdom.[1]It starts inChacewater.[2]BothTrewedna WaterandRiver Kennallflow into the Carnon before it merges with Tallack's Creek to becomeRestronguet Creek,which eventually flows intothe English Channelat the mouth ofCarrick Roads.[3]
| Carnon River | |
|---|---|
 Carnon River near Point Mills | |
  Location within Cornwall | |
| Location | |
| Country | England |
| County | Cornwall |
| Physical characteristics | |
| Source | |
| • location | Chacewater,Cornwall |
| • coordinates | 50°15′45″N5°09′30″W/ 50.262394°N 5.158347°W |
| Mouth | Restronguet Creek |
• location | Cornwall |
• coordinates | 50°12′28″N5°04′59″W/ 50.2078°N 5.0830°W |
| Basin features | |
| Tributaries | |
| • left | 50°12′51″N5°05′55″W/ 50.214184°N 5.098663°W,50°12′51″N5°05′54″W/ 50.214208°N 5.098415°W,50°12′51″N5°05′54″W/ 50.214206°N 5.098334°W,50°12′45″N5°05′54″W/ 50.212388°N 5.098277°W,50°12′20″N5°05′02″W/ 50.205645°N 5.083766°W |
| • right | 50°14′14″N5°08′31″W/ 50.237319°N 5.141862°W,50°13′49″N5°07′35″W/ 50.230265°N 5.126254°W,Trewenda Water50°12′54″N5°06′04″W/ 50.215071°N 5.101136°W,River Kennall50°12′25″N5°05′29″W/ 50.206988°N 5.091408°W,Tallack's Creek50°12′38″N5°04′59″W/ 50.210599°N 5.083176°W |
TheNebra sky disc,a gold-decorated bronze disc found in Germany and dated to theBronze Age,contains both gold and tin from the Carnon valley.[4][5]There was also an antler pick discovered, along with some other artefacts in 1790. In 2016, the pick was dated to be from the Early Bronze Age.[6]
In 1992, the river was hit by a major pollution incident, when over 45 million litres ofcontaminated waterfrom the closedWheal Janemine was released by the collapse of anadit,colouring the river water red.[7]A treatment works has since been installed at Wheal Jane to intercept the contaminated water and treat it to remove suspended metals and restore a neutral pH.[8]
See also
edit
References
edit- ^"Case study:Carnon River: Abandoned Metal Mines".Restore.River Restoration Centre.Retrieved29 January2018.
- ^"Google Maps".Google Maps.Retrieved30 January2018.
- ^"Google Maps".Google Maps.Retrieved30 January2018.
- ^Ehser, Anja; Borg, Gregor; Pernicka, Ernst (2011)."Provenance of the gold of the Early Bronze Age Nebra Sky Disk, central Germany: geochemical characterization of natural gold from Cornwall".European Journal of Mineralogy.23(6): 895–910.doi:10.1127/0935-1221/2011/0023-2140.Retrieved1 February2018.
- ^Haustein, M. (2010). "TIN ISOTOPY-A NEW METHOD FOR SOLVING OLD QUESTIONS".Archaeometry.52:816–832.doi:10.1111/j.1475-4754.2010.00515.x.
- ^"New Evidence for Bronze AgeTin Mining".earlyminesresearchgroup.co.uk.Retrieved14 January2024.
- ^Neal, Colin; Whitehead, Paul G.; Jeffery, Hazel; Neal, Margaret (1 February 2005)."The water quality of the River Carnon, west Cornwall, November 1992 to March 1994: the impacts of Wheal Jane discharges".The Science of the Total Environment.338(1–2): 23–39.doi:10.1016/j.scitotenv.2004.09.003.ISSN0048-9697.PMID15680624.
- ^"Pumping the polluted water from mines - BBC News".BBC Online.Retrieved1 February2018.
External links
edit
- "Upper Carnon River".Catchment Data Explorer.Environment Agency.
- "Lower River Carnon".Catchment Data Explorer.Environment Agency.
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