Photomicrograph of Bioclastic Limestone

January 31, 2019

Bioclastic grainstone (1)

Photographer: Kamal Abou Elmagd 
Summary Author: Kamal Abou Elmagd 

Shown above is a photomicrograph image of bioclastic limestone that was found near Aswan, Egypt. It's from the Kurkur Formation and dates to the Lower Paleocene. Fragments of invertebrates and foraminiferal shells are immersed here in the sparite cement of this rock. Compare with the Earth Science Picture of the Day for December 18, 2018. The photomicrograph, but 2 mm across, was taken on September 3, 2014.

Photo Details: Camera: Olympus DP73; Exposure Time: 0.0011s (1/900); Aperture: ƒ/1.0; Distance: 0.0185m.