Lawn Hill crater

Lawn Hill crater
Landsat image of Lawn Hill crater (circular feature in centre); screen capture from NASA World Wind
Impact crater/structure
ConfidenceConfirmed
Diameter18 km (11 mi)
AgeOrdovician
ExposedYes
DrilledNo
Location
Coordinates18°40′01″S 138°37′48″E / 18.667°S 138.63°E / -18.667; 138.63
CountryAustralia
StateQueensland
Lawn Hill crater is located in Queensland
Lawn Hill crater
Location of the crater in Queensland

Lawn Hill ‘crater’ refers to an Ordovician impact structure, the eroded remnant of a former impact crater, situated approximately 220 km north-north-west of Mount Isa in northwestern Queensland, Australia. The site is marked by an 18 km diameter ring of dolomite hills. The origin of this circular feature was uncertain until the discovery of shatter cones and shocked quartz from uplifted rocks at the centre was reported in 1987.[1][2]

  1. ^ Stewart A, Mitchell K (1987). "Shatter cones at the Lawn Hill circular structure, northwestern Queensland; presumed astrobleme". Australian Journal of Earth Sciences. 34 (4): 477–485. Bibcode:1987AuJES..34..477S. doi:10.1080/08120098708729427.
  2. ^ "Lawn Hill". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2009-08-19.