The Australian Electoral Commission (AEC), Commonwealth Electoral Divisions are federal electoral divisions. AEC electoral divisions are areas legally prescribed for the purpose of returning members to the House of Representatives. Commonwealth Electoral Divisions may change as the AEC revise their boundaries. Where this occurs, Commonwealth Electoral Divisions will be updated annually. The 2021 Commonwealth Electoral Divisions remain current at this time. There are 170 Commonwealth Electoral Divisions covering the whole of Australia without gaps or overlaps. Geoscience Australia to re-host the Commonwealth Electoral Division Boundaries for the purpose of the Digital Atlas of Australia Beta release in June 2023.

In 1911 a geological survey of the Canberra Federal City site was completed with a map. The rocks composing the site are somewhat contorted and folded sedimentary series of sandstones and quartzites, shales, slates, limestones, and volcanic tuffs, and this has subsequently been intruded by an igneous series, consisting principally of quartz-phorphyries and quartz-felsites.

Report is result of a rapid geological reconnaissance of the Federal Territory made primarily to locate deposits of limestone and shale, suitable for the manufacture of Portland cement, and other materials likely to be of value in the building of the Federal City.