Reddening of dune sands—evidence from southeast India
- 1 September 1981
- journal article
- research article
- Published by Wiley in Earth Surface Processes and Landforms
- Vol. 6 (5) , 459-468
- https://doi.org/10.1002/esp.3290060506
Abstract
Thin section, SEM, and TEM analyses have indicated that the red ‘teri’ sands of southeast India have formed from weathering in situ of coastal dune sands. The data does not support a detrital origin for the red sands. C14 dates indicate that dune deposition and weathering, to a maximum depth of 10 m, leading to the formation of a hematite, koalinite and illite rich matrix has taken place rapidly over the past 25,000 years. It is postulated that garnet was a major source of hematite (ferric oxide).Keywords
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