Gas Works Lane Section (Haverfordwest)
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Geology & landscape
Geological Period: Silurian · Rock Type: Mudstone, Sandstone
Description
Description This site shows a sequence of rocks falling within the Llandovery Series (Silurian). The section includes a one hundred and forty metre section through the Haverford Mudstone formation and the overlying Gasworks Sandstone and, for these rock units, this is the best available exposure. The marine fauna of the Haverford Formation is well known as one of the richest in the lower Llandovery, including numerous brachiopods, trilobites, corals, bryozoa, crinoids, tentaculitids and nautiloids. This is a key site for studies of lower Silurian stratigraphy and biotas.