41. Granophyre may also form as the uppermost stratigraphic layer resulting from melting of upper-middle crustal rocks by a meteorite impact . 42. The basin of this somewhat circular lake was formed by meteorite impact 700? million years ago during the Cryogenian period. 43. This includes analogues of deep subsurface habitats, and temporary habitats that can form after volcanic eruptions and large meteorite impacts . 44. Other potential habitats include lakes formed in the higher latitudes after cometary or meteorite impacts , or as a result of volcanism. 45. Then, at layers corresponding to the meteorite impact , flowering plants disappear and ferns make up about 90 percent of specimens found. 46. The mission will determine if there is any meteorite impacts on Mars, which could provide knowledge about such processes on Earth. 47. Just as the dinosaurs did 65 million years ago, in the belief of those who practice " meteorite impact science ." 48. The most popular explanation for the mass extinction at the end of the Cretaceous is that it resulted from a meteorite impact . 49. Though the meteorite impact theory of tektite formation is widely accepted, there has been considerable controversy about their origin in the past. 50. The presence of iron fragments at the site also pointed to a meteorite impact , as there are no iron deposits in the region.
