attresa.geo

#thinsection #sample from Kudirka #reefs which formed during the #Silurian period. In the Baltic region. Interestingly, different reefs have dominated at different times throughout Earth's history.

Thinsection smaple photographed using microscope PPL and CT method (#cathodoluminescence).

#paleontology #bryozoa #crinoidea #plants #cement #recrystallization