Port St Mary Port St Mary Port St Mary ( or "Purt-noo-Moirrey") is a village district in the south-west of the Isle of Man. The village takes its name from the former Chapel of St Mary () which is thought to have overlooked Chapel Bay in the village. Its population is 1,953 according to the 2011 census. In the 19th century it was sometimes called Port-le-Murray. Port St Mary is located in the south-western part of the island, near Port Erin. A railway station is just north of the village, one of the stops on the surviving section of the Isle of Man
Geography of the Isle of Man the Ordovician period. There is a belt of younger Silurian rocks along the west coast between Niarbyl and Peel, and a small area of Devonian sandstones around Peel. A band of Carboniferous period rocks underlies part of the northern plain, but is nowhere seen at the surface; however similar age rocks do outcrop in the south between Castletown, Silverdale and Port St Mary. Permo-Triassic age rocks are known to lie beneath the Point of Ayre but, as with the rest of the northern plain, these rocks are concealed by substantial thicknesses of superficial deposits. The island has significant deposits of