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Acraman impact structure — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Acraman_impact_structure
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-07T11:14:39.270Z
SHA-256 of the archived text: 1396cf316f52d4b879b0724c0bb6d3d330356b0bfad034dc28d79f5fd82b3ad3
Stable URL of this page: https://metraipolis.com/documento/dc_bc06cc7fee68

How to cite

Acraman impact structure — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Acraman_impact_structure (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_bc06cc7fee68 (Metraipolis archive dc_bc06cc7fee68, sha256 1396cf316f52d4b879b0724c0bb6d3d330356b0bfad034dc28d79f5fd82b3ad3)

BibTeX

@misc{dcbc06cc7fee68,
  title = {Acraman impact structure — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Acraman_impact_structure},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_bc06cc7fee68; sha256 1396cf316f52d4b879b0724c0bb6d3d330356b0bfad034dc28d79f5fd82b3ad3},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Acraman_impact_structure. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Acraman impact structure is a deeply eroded impact crater in the Gawler Ranges of South Australia. Its location is marked by Lake Acraman, a circular ephemeral playa lake about 20 kilometres (12 mi) in diameter. The discovery of the impact structure and independent discovery of its ejecta were first reported in the journal Science in 1986 by George E. Williams and Victor A. Gostin. The evidence for impact includes the presence of shatter cones and shocked quartz in shattered bedrock on islands within Lake Acraman. The impact structure is deeply eroded, and its original size must be inferred by indirect means. Some authors estimate an original diameter of up to 85 to 90 kilometres (53 to 56 mi), while other suggest a smaller size, perhaps only 35 to 40 kilometres (22 to 25 mi), closer to that of the depression in which Lake Acraman is centred. The larger size estimate would imply an energy release of 5.2 million megatons of TNT. The impact event is estimated to have occurred about 590 million years ago during the Ediacaran; this age is not derived from the crater itself but from the position of ejecta within nearby sedimentary basins. The Lake Acraman Impact Structure is listed on the South Australian Heritage Register.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Acraman impact structure» — https://en.wikipedia.org/wiki/Acraman_impact_structure
Wikidata Q342569: «impact crater in South Australia, Australia» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q342569
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Acraman_impact_structure?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1362897366, consultata il 2026-11-07T11:10:26.573Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 49b0d8544cbb24a5fe43094a09b3e7e2ca2590f7d237ea6d715eb7678571579d