Williamsdale, New South Wales

Williamsdale is a village on the New South Wales - Australian Capital Territory border in Australia on the Monaro Highway. The postcode is 2620. The former Bombala railway line passes through the village and a railway station saw service until 1975.The part of Williamsdale within the ACT was included in the area called "Tuggeranong (SA2)" by the ABS, which also included the ACT part of Royalla and all the rural territory between the Murrumbidgee River and the NSW border. This area had a population of 21 at the. The NSW part of Williamsdale had a population of 63 at the.GeologyTo the east of Williamsdale is the Williamsdale Volcanics. These are made up from blue-green crystal tuff. The crystals are sized from 0.3 mm to 1 mm and are embedded in a fine matrix. Quartz crystals make up 25%, plagioclase 5%, alkali feldspar 10%, biotite 5-10% which is altered to chlorite, epidote and leucoxene.Middle Silurian Colinton Volcanics foliated dacite and tuff is under Williamsdale. A roughly north south band of these acid volcanics extends to the north along the Monaro Highway and then follows the Cooma road to Cottondale. South the volcanics also follow the Monaro Highway in a more complex band through Colinton past Michelago and at least as far south as Bredbo.