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WA Soils The Swan Coastal Plain The Swan Coastal Plain stretches from Gingin Brook in the north to Dunsborough in the south.The eastern boundary being the Darling Scarp and Gingin Scarp. Most of the Perth metropolitan area is located on the Swan Coastal Plain. Quindalup soils are the white limey sands which occur near the coast, such as those found at Rockingham, Scarborough and Quinns Beach. Quindalup soils form the most recent dunes along the coastline. Cottesloe soils are brown or yellow sand with limestone close to the surface, often breaking through to form an outcrop. Fremantle and Neerabup are examples of where this occurs. Karrakatta soils are yellow sands. Kings Park and Tuart Hill are examples of where you can see this soil type. Bassendean soils are pale grey. Herdsman soil is found around a series of wetlands and swamps within the Cottesloe, Karrakatta and Bassendean soil types. They are found in low –lying areas where the groundwater is close to the surface, even breaking through in places such as the lakes in Yanchep National Park, Lake Joondalup and Star Swamp in the suburb of North Beach. Guildford soils are found in flat terrain and comprise sandy loams over a layer of clay. Kenwick and Middle Swan provide examples. Beermullah soils are comprised of sand, which is occasionally saline, and loam over clay, which become waterlogged in winter. They are typically found in flat terrain. Information adapted from "The soil types and plant communities of the Perth Metropolitan Region. |