[ Home ]                     ►    Find documentation to Rock Samples collected near the Pilbara Crater 2 on the following page  :    ►    Rock-Samples -  Pilbara Impact Crater 2 

                                     ►    Here the detailed description of the Pilbara Crater 2 :   Pilbara Crater 2.pdf         or short description :  Pilbara Impact Crater 2  ( on my Website of the Permian-Triassic Impact Event )

                                                                                                                 and some selected scientific infos here :      ►  Scientific Documents ( about the Pilbara Crater 2 area )

Primary Impact Crater Æ 50 km ( age > 3 Ga ) in the Pilbara Craton near Marble Bar / Western Australia

The satellite view, the magnetic intensity map and the geological map indicate a very old Æ 50 km impact structure near Marble Bar / Western Australia.

These impact structure probably was formed by a comet fragment which impacted on the indicated position approx. 3,25 Ga ago. This impact event may

be connected to the BGB impact structure in South-Africa, and it maybe responsible for the development of the first life-forms on Earth ~ 3,25 Ga ago !

The Geologist Andrew Y. Glikson pointed out, that there seems to be a clear correlation between the BGB 3.26 – 3.24 Ga impact event in South-Africa and stratigraphic units of the same age in the Pilbara Craton

(à the assumed impact event described in this document)  

Therefore I want to propose the following hypothesis :

Both impact events, the BGB impact structure and this impact event in the Pilbaras occurred at the same time ! These impacts were caused by the same impactor, which probably was a comet, maybe coming from the Oort Cloud, which broke apart when it reached the roche limit

( approx. 10000 to 30000 km above Earth’s surface ).

The fragments of the comet then formed the BGB structure and the described Pilbara impact structure.

The later development of the oldest known Stromatolites, found very close to the two impact sites, was a direct result of these two impacts and the organic material which arrived together with the impacting comet fragments

The oldest 3.25 Ga Stromatolites are found in the Hooggenoeg Formation ( Buck Ridge ) / South Africa and in the Dresser Formation / West Australia, less than 30 km away from each of the the two impact sites ! 

There is also strong indication that the Pilbara Craton and the BGB formed the first Supercontinent Vaalbara ~ 3.25 Ga ago.