Basaltic Dyke is a photograph by Teal Riley/pete Bucktrout, British Antarctic Survey which was uploaded on August 5th, 2016.
Basaltic Dyke
Polarised light micrograph of a thin section of basaltic dyke. The larger crystals are the minerals clinopyroxene and olivine, which are sitting in a... more
Title
Basaltic Dyke
Artist
Teal Riley/pete Bucktrout, British Antarctic Survey
Medium
Photograph
Description
Polarised light micrograph of a thin section of basaltic dyke. The larger crystals are the minerals clinopyroxene and olivine, which are sitting in a finer grained matrix of plagioclase. This sample was collected from Straumsvola Mountain, Antarctica, and dates to the Jurassic Period (201 to 145 million years ago). It has been calculated that the crystallisation temperature for the magma that formed this rock was around 1,300 degrees Celsius, indicating elevated mantle temperatures in the Antarctic at this time.
Uploaded
August 5th, 2016
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