. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. no bulletin: museum of comparative zoology. a small valley there was exposed in 1908 in the road the section diagrammatically shown in Fig. 32. A quartz vein about 2 inches (5 cm.) thick dipping E. 30° in a section of decomposed schists had given rise to a sheet of quartz fragments at the base of the residual structureless surface deposits. Fig. 32.— Train of residual quartz fragments derived from a vein during the weathering and ablation of the crystalline schists. Near Curityba, Parand. a-b, a distance of 5

GLIX-115-RGE46A

. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. no bulletin: museum of comparative zoology. a small valley there was exposed in 1908 in the road the section diagrammatically shown in Fig. 32. A quartz vein about 2 inches (5 cm.) thick dipping E. 30° in a section of decomposed schists had given rise to a sheet of quartz fragments at the base of the residual structureless surface deposits. Fig. 32.— Train of residual quartz fragments derived from a vein during the weathering and ablation of the crystalline schists. Near Curityba, Parand. a-b, a distance of 5
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. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. no bulletin: museum of comparative zoology. a small valley there was exposed in 1908 in the road the section diagrammatically shown in Fig. 32. A quartz vein about 2 inches (5 cm.) thick dipping E. 30° in a section of decomposed schists had given rise to a sheet of quartz fragments at the base of the residual structureless surface deposits. Fig. 32.— Train of residual quartz fragments derived from a vein during the weathering and ablation of the crystalline schists. Near Curityba, Parand. a-b, a distance of 5

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