1. Therefore, Umm al Binni lake remains a possible, albeit unconfirmed, impact structure . 2. A magnetotelluric investigation of the Araguainha impact structure in Mato Grosso-Goi�s, central Brazil. 3. The Lake Acraman Impact Structure is listed on the South Australian Heritage Register. 4. ?-PbO 2 structure, have been found associated with the N�rdlinger Ries impact structure . 5. If so, this would be another indication of a relatively young impact structure . 6. Some contain coesite, a high pressure mineral diagnostic of impact structures . 7. He championed the use of shatter cones as evidence for ancient impact structures . 8. Dominici lies within a much larger impact structure , the Homer basin. 9. Shock metamorphism in the Azuara impact structure include planar deformation features in quartz. 10. The impact structure is exposed to the surface, resulting in erosion.
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