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Table 2 Results of grain size distribution, mineral composition (n > 500), roundness of quartz, and frequency of two characteristics microtextures. Italic characters show > 0.75 (roundness) and > 50% (frequency of v-shaped percussion cracks and small holes)

From: Analysis of the surface microtextures and morphologies of beach quartz grains in Japan and implications for provenance research

Sample Median diameters (Φ) Dominant mineral composition group Roundness V-shaped percussion cracks (%) Small holes (%)
I-1 0.8 CL 0.79 100 5
I-2 2.0 C 0.80 90 5
I-3 1.0 C 0.80 80 10
I-4 1.3 C 0.79 85 20
I-5 2.1 M 0.77 65 5
I-6 2.4 M 0.77 85 0
I-7 1.2 R, CL 0.77 75 10
I-8 0.4 R, CL 0.79 90 5
I-9 2.0 M, C 0.79 90 10
II-1 1.7 R, CL 0.72 15 35
II-2 1.1 R, CL 0.74 30 70
II-3 −0.2 CL 0.75 25 95
II-4 1.3 CL 0.73 70 80
III-1 2.0 CL 0.76 95 25
III-2 2.3 CL 0.76 55 15
III-3 0.2 CL 0.80 95 0
III-4a 1.3 0.79 85 10
IV-1 1.3 R 0.78 80 5
V-1 1.7 R 0.71 30 80
  1. aMeans fluvial sediments
  2. Italic characters showing over 50%