Polurrian Rocks 18 – Outcrop of meta-sedimentary rock from the Devonian Period Carne Formation on the north side of the Lizard Boundary Fault at Polurrian Cove in Cornwall.
https://natureinfocus.blog
Polurrian Rocks 18 – Outcrop of meta-sedimentary rock from the Devonian Period Carne Formation on the north side of the Lizard Boundary Fault at Polurrian Cove in Cornwall.
Jessica, does Devonian rock hold fossils?
Yes, RH, Devonian sedimentary rocks can hold a wide range of fossils from plants, corals, crinoids, brachiopods, bivalves, gastropods, and trilobites, to fish – but not all in the same places. Devonian volcanics don’t have fossils. In the Devonian rock type found on the north side of Polurrian Cove, the only fossil that I have heard about so far is a plant debris that can form thin rafts of coal, and this may be carbonised sapropel (putrified sludge of decomposed marine organisms including algae on the sea bed).