By: GeneCooper
Image: Graham Bird, GIGAmacro ⧉
Subject: Callan Bentley, Northern Virginia Community College ⧉

Uploaded: 7 Jan 2015
Last Updated: 7 Jan 2015

1.24 gigapixels
46,925 x 26,455 pixels
156.4 in X 88.2 in at 300dpi
23,791 pixels per inch

This image is a cross polarized geologic thin section from the Columbia Gabbro, James River, VA. The thin section is just what it sounds like, a very microscopically thin section of a geologic sample. Using cross polarized light, the image is created much in the same way that we photograph standard microscope slides.