Graywacke is a “dirty” sandstone distinguishable by its angular to subangular clasts and minor silt/mud content. It often hosts graded beds.
|Particle size (Wentworth)||0.0625 – 2 mm|
Graywacke in Hand Sample
Graywacke in Thin Section
Graywacke in plane polarized light. Magnification: 40x Click here to see graywacke in crossed polars: https://youtu.be/z94ywQWuTNE Click here to explore a ha…
Graywacke in cross polarized light. Magnification: 40x Click here to see graywacke rotating in plane polars: https://youtu.be/af4VFMA-oAU Click here to explo…