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Fig. 3 | Progress in Earth and Planetary Science

Fig. 3

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

Fig. 3

SEM images. a Quartz grain of sample I-1 with rounded outline and low relief. b Quartz grain of sample I-4 with rounded outline and low relief. c Quartz grain of sample I-7 with flat cleavage face (arrows). d Quartz grain of sample II-2 with angular outline and high relief. e Quartz grain of sample II-4 with flat cleavage face (arrow). f Quartz grain of sample III-2 with elongated grain shape. g Quartz grain of sample III-3 with rounded outline and many v-shaped percussion cracks. h Quartz grain of sample IV-1 with β-quartz shape. i Quartz grain of sample V-1 with angular outline. j Crystal Overgrowth in sample I-8. k Silica precipitation in sample I-8. l Oriented etch pits in sample III-3. m Solution pits in sample I-6. n Small holes in sample II-3. o Arcuate and straight steps with small holes (arrows) in sample III-2. p Large holes (arrow) in sample I-1. q Upturned plates in sample IV-1. r Flat cleavage face (arrow) in sample I-7. s V-shaped percussion cracks in sample I-9. t Crescentic percussion marks (arrows) in sample I-8. u Small (<10 μm) and medium (10-100 μm) conchoidal fractures with arcuate steps in sample I-5. v Large (>100 μm) conchoidal fracture (arrow) in sample I-6

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