The 2019 Outstanding Student Poster and PICO (OSPP) Award is awarded to Theresa Nohl!
At The European Geosciences Union (EGU) 2019 in Vienna Theresa presented a synsedimentary-grown Halysites (chain coral) colony from the Silurian of Gotland crosscutting several beds of the circumambient limestone-marl alternation. The limestone-marl alternation was identified to be of early diagenetic origin and mismatches the original environmental changes recorded in the coral’s skeleton. Furthermore, the short time span of a limestone-marl couplet deduced from the coral colony’s life span mismatches the assumed hundreds to thousands of years for a couplet in this calm deep setting. This renders interpreting and dating of this succession with cyclicity impossible. Read more…