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--- history:evolution_australia [2026/06/12 07:01] – [Archaean] gary1
+++ history:evolution_australia [2026/06/12 07:02] (current) – [Archaean] gary1
@@ Line 31: / Line 31: @@
   *2,229mya years ago, the 70km wide **Yarrabubba impact crater in WA** the result of an asteroid impact which is thought to have helped end the "snowball earth" period
   *c2000mya the collision of the Yilgarn (moving north) and the Pilbara (moving south) craton shields form the Wittenoom blue asbestos (crocidolite) deposits which was metamorphosed from banded iron formations in the Wittenoom Formation, and resulting in the **Capricorn Orogeny** forming the mountain ranges in the region (the Hamersley Range formed by the pushing up of the Hamersley Basin) which reached several kms high but have since eroded
-  ***Ora Banda impact crater** in eastern WA impacted Archaean greenstone (([[https://onlinelibrary.wiley.com/doi/10.1111/maps.70154|2026: A meteorite impact crater in the Eastern Goldfields of Western Australia—Shock metamorphism and projectile signature at the Ora Banda structure]]))
+  ***Ora Banda impact crater** in eastern WA, is 4km wide and represents one of the oldest known sites with strong geochemical evidence for an iron meteorite projectile and is one of few confirmed impact structures formed in an Archean greenstone terrane (([[https://onlinelibrary.wiley.com/doi/10.1111/maps.70154|2026: A meteorite impact crater in the Eastern Goldfields of Western Australia—Shock metamorphism and projectile signature at the Ora Banda structure]]))