Photomicrographs from thin sections of EC series and TS samples (HK Sachan)

Here are images of samples from the N side of Everest, collected by Lawrence Wager in 1933, and of suites from the S Col and Lhotse face, providing a fairly full picture of the microstructure and metamorphic grade variation across the Everest Series.

These images document the microstructures and assemblages across the South Tibetan Detachment system in the Dzakaa Chu section about 40km NNE of Mt Everest. Calcareous rocks are dominant. The samples are illustrated in sequence from the top (low grade) to the bottom of the section.

A few photomicrographs of a sample from the summit of Gyachung Kang, NW of Everest - a dark limestone with fossil fragments comparable to that on Everest summit.