Heritage Places

Heritage Place Details

Map Show Map
Address Brachina Gorge FLINDERS RANGES
Accuracy H - high level confidence
Development Plan Land Not Within a Council Area (Flinders)
Polygon Type S - parcel that has been split (because it has more than one heritage item on it
Details (Known As) Impact Ejecta Horizon Late Precambrian Shales Geological Site, Ikara-Flinders Ranges National Park
Registered Name Late Precambrian Shales
Significance This site in Brachina Gorge is part of a solitary layer of shattered rock fragments that has been traced over a distance of 260km within folded 600 million year old Precambrian marine shales in the Flinders Ranges. The very thin layer, averaging 10cm in thickness, contains gritty grains and pebbles of volcanic rock. This debris (known as impact ejecta) is the result of the collision of an asteroid or comet into the Gawler Range Volcanics, some 300 km to the west of the Flinders Ranges which created Lake Acraman (registered place 14454). This ancient ejecta blanket of known source can provide valuable information on the nature and effects of large terrestrial impacts and the Acraman impact is distinguished as the only major terrestrial impact structure with widely distributed coarse ejecta still preserved. (Adapted from HB Assessment File and Geological Monuments in South Australia, item FR.36)
Subject Index Landscape area - Geological Site
Class State
Status Code REG - Confirmed as a State Heritage Place in the SA Heritage Register
Status Date 04-MAR-1993
LGA Unincorporated SA
State Heritage ID 14453
Heritage Number 76
Section 16
As listed in the SA Heritage Register
Plan Parcel & Title Information CR 6140/777 D90825 Q58


While due care has been taken to ensure that the SA Heritage Places Database accurately reflects the South Australian Heritage Register and listings of Local Heritage Places in Development Plans, the State of South Australia does not accept liability for the use of the SA Heritage Database for any purpose. Users should consult the Department for Environment and Water - Heritage South Australia to confirm the listing of State Heritage Places and the relevant Development Plan for Local Heritage Places/Contributory Items.

In the majority of cases, the maps of State Heritage Places on this web site show the footprints of the most significant structures on a registered Place. However, sometimes they simply indicate the complete area of land comprising the Place. Work is proceeding to further refine the mapping of such places. It is also important to note that development control is not limited to the registered structures but extends to their setting and structures nearby (what is termed ‘development affecting’ a State Heritage Place). Hence it is vital that exact details of the listed place and implications for any proposed development be discussed with Heritage South Australia staff, as they cannot be deduced solely from the information on this web site. The inclusion of a place in the SA Heritage Register gives no right of public access. Permission to visit properties must be sought from the owners. The accuracy of the mapping of State Heritage Places is not guaranteed. Please contact Heritage SA ( https://www.environment.sa.gov.au/topics/heritage/sa-heritage-register) if you believe there is an error.

GIS files

To access downloadable GIS files, go to Data.SA.