Intraclasts

1. Intraclasts

Ooidal grainstone with a rounded clast of similar ooidal packstone/grainstone with micritized ooids and meniscus micrite that must have been rapidly lithified and eroded during storms.

Thin section kindly provided by T. Geel, Vrije Universiteit, Amsterdam

2. Intraclasts

Peloidal skeletal (benthic foraminifera Dicyclina, alveolinids) grainstone with an angular clasts of packstone with miliolids probably deriving from adjacent restricted and low energy lagoon (Upper Cretaceous).

Thin section kindly provided by T. Geel, Vrije Universiteit, Amsterdam

3. Intraclasts

Clast of wackestone/calci-mudstone with planktonic foraminifera within a deposit of globotruncanids and Inoceramus probably eroded in basinal setting during sediment gravity flows (Upper Cretaceous).

Thin section kindly provided by T. Geel, Vrije Universiteit, Amsterdam

4. Intraclasts

Ooidal grainstone to packstone containing mostly ooids and in the upper left corner a rounded intraclast of similar lithofacies.

Thin section kindly provided by T. Geel, Vrije Universiteit, Amsterdam

5. Intraclasts

Grainstone containing a section of the dasyclad alga Koninckopora (left), foraminifera (textularids, endothyrids) and intraclasts containing skeletal grainstone and kamaenid (palaeoberesellid) algae.

Carboniferous, Kazakhstan