A thin section was prepared for microscopic examination in transmitted polarised light. A count of 100 widely spaced points falling within sectioned sand clasts gave the following composition:
53% quartz as unstrained to mildly strained free simple grains (47%) or composite grains (6%)
11% quartz as moderately strained simple or composite grains
1% vein quartz (highly strained)
1% quartz as highly strained simple grains
2% quartzite (moderately strained)
2% chert (finely microcrystalline quartz)
20% feldspar (slightly sericitised and saussuritised)
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