Mikhail Rogov

3 Questions 19 Answers 0 Followers

Questions related from Mikhail Rogov

How to determine this Valanginian ammonite?

Dear colleagues, While studying ammonites from the boreholes drilled in Western Siberia, I found a strange specimen. Its age is Early Valanginian and it is associated with Nikitinoceras and...

27 April 2025 4,167 0 View

Miocene green algae in thin sections?

Dear colleagues In attached photos, you will find green algae (?) from the Miocene glendonite-bearing rocks of Sakhalin (SEM photos of thin sections) Is anybody can help with identification of...

03 January 2020 4,298 3 View

Have you seen anything concerning Mesozoic pre-Valanginian glendonite occurrences in Arctic Canada and Alaska?

Jurassic deposits of the Siberia and NE Russia are characterized by numerous glendonite occurences, especially widely distributed in Upper Pliensbachian and Bajocian-Bathonian. Did anybody know...

08 May 2015 7,613 6 View