Fig. 5
![Fig. 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40645-021-00427-6/MediaObjects/40645_2021_427_Fig5_HTML.png)
Optical microscope photographs of various types of lithic fragments in the Aertashi section (all photographs were taken under crossed nicols). a Micritic limestone, b Sandstone, c Chert, d Volcanic rock, e Meta-quartzite, and f Quartz schist fragments