Opaque minerals as aids in distinguishing between source and sorting effects on beach sand mineralogy in southwestern Oregon.
Source area and wave sorting effects can be separated on 4 Oregon beaches bounded by prominent headlands by studying the magnetic fraction of the sand. On 3 beaches the percentage of magnetite in the sand from the upper swash zone consistently increases toward the N end of each beach, apparently owing to selective sorting during littoral transport. However, the percentages of Cr and Ti in the magnetite are generally independent of sorting effects. Each beach appears to be characterized by a fairly distinct range of Ti/Cr in the magnetic fraction and the range differs from beach to beach. -from Author
|Opaque minerals as aids in distinguishing between source and sorting effects on beach sand mineralogy in southwestern Oregon.
|Journal of Sedimentary Petrology
|USGS Publications Warehouse