Sandstone

Rock group Sedimentary
Origin Clastic/detrital
Particle size (Wentworth) 0.0625 – 2 mm

Sandstone in Hand Sample

Quartz sandstone from the Weverton Formation
Sandstone from the Pennsylvanian-aged Conemaugh Group, WV
Fossiliferous sandstone from the Devonian-aged Foreknobs Formation
Arkose from within the Devonian-aged Old Red Sandstone
Graywacke from Siccar Point (!)
Pebble-bearing sandstone from the Massanutten Formation
Glauconitic sandstone with rip-up clasts
Bloomsburg Formation sandstone
Flathead sandstone from Wind River Canyon, Wyoming

Sandstone in Thin Section

Quartz sandstone with calcite cement, plane  polars
Quartz sandstone with calcite cement, crossed polars
Graywacke, plane polars
Graywacke, crossed polars
Arkose, plane polars
Arkose, crossed polars

Quartz sandstone with calcite cement, plane polars

Sandstone with Calcite Cement, Plane Polars

Sandstone with calcite cement in plane polarized light. Magnification: 40x To view these grains in crossed polars, click here: https://youtu.be/KXxt3mIFMcw T…

Quartz sandstone with calcite cement, crossed polars

Sandstone with Calcite Cement, Crossed Polars

Sandstone with calcite cement in cross polarized light. Magnification: 40x To view these grains in plane polars, click here: https://youtu.be/a0yzVfarYlA To …