Shoemaker - Hypervelocity Impact Crater

Alternate Names
Local Language
Coordinates 25° 51' 59" S; 120° 53' 32" E
Notes
  1. 100 km N of Wiluna and 700 km ESE of Canarvon in Western Australia.
Country Australia
Region Western Australia
Date Confirmed 1974
Notes
  1. First confirmed due to presence of shocked mineral grains, shatter cones, and pseudotachylite (Butler, 1974).
Buried? No
Notes
  1. Much of the bedrock in this region is concealed beneath abundant lake deposits and wind blown drift (Butler, 1974).
Drilled? Yes
Notes
  1. Several holes presented in Pirajno et al. (2003) but no logs given.
Target Type Mixed
Notes
  1. Early Proterozoic limestones and shales of the Nabberu Basin and Archean syenitic and granitoid rocks in central uplift (Bunting et al., 1980).
Sub-Type Carbonate, Granitoid, Limestone, Syenite
Apparent Crater Diameter (km) 30 km
Age (Ma) 568 - 1300
Notes :
  1. 568-1300 Ma based on a minimum K-Ar alteration age (illite) and stratigraphic constraints (Proterozoic, Teague granite, or younger) (Pirajno et al., 2003). Previously, a group of 5 samples with the freshest quartz syenite from the central peak were dated using K-Ar to provide an age of 1630 ± 5 Ma (Bunting et al., 1980).

Method :
  1. K-Ar
Impactor Type Unknown

Advanced Data Fields

Notes

Erosion
7
  1. Erosion has removed the ejecta, rim and crater floor, exposing the deeper rocks of the central uplift (Bunting et al., 1980).
Final Rim Diameter
Unknown
Apparent Rim Diameter
30 km
  1. Outer diameter of structure is 30 km (Pirajno et al., 2003). Could be as large as 48 km, based on size of central uplift (Hawke, 2003).
Rim Reliability Index
1
  1. Central uplift of 12 km in diameter (Pirajno et al., 2003). SU cannot be estimated due to crystalline rocks in the core of the central uplift.
Crater Morphology
Complex
Central Uplift Diameter
12km
Central Uplift Height
Unknown
Uplift Reliability Index
4
Structural Uplift
Unknown
Thickness of Seds
Target Age
Precambrian
Marine
No
Impactor Type
Other Shock Metamorphism
No
Shatter Cones
Yes
  1. First reported by (Butler, 1974). Shatter Cones up to 15 cm in length are sparsely scattered, and rarely well developed through the iron-formation (Bunting et al., 1980). Shatter cones occur in the banded iron formation of the Frere Formation in the upturned collar, but generally they are poorly developed and fairly rare (Shoemaker and Shoemaker, 1996). Shatter cone in a quartz vein observed in (Shoemaker and Shoemaker, 1996).
Planar Fractures
No
Planar Deformation Features
Yes
  1. PDF in quartz grains in granitic rocks of core (Bunting et al., 1980).
Diaplectic Glass
No
Coesite
No
Stisovite
No
Crater Fill
  1. The structure has been eroded below the crater floor and no remnant of a melt sheet or breccia blanket is preserved (Pirajno et al., 2003).
Proximal Ejecta
Distal Ejecta
Dykes
Volume of Melt
Depth of Melting

References

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H Butler (1974) Lake Teague ring structure, Western Australia - an astrobleme?, Search 5(10), p. 536-537, 14 ARCHERON ST, DONCASTER VIC 3108, AUSTRALIA: CONTROL PUBL PTY LTD

F Pirajno, A Y Glikson (1998) Shoemaker impact structure (formerly Teague ring structure), Western Australia, Australian Geologist 106, p. 16-18, Geological Society of Australia, Sydney, N.S.W., url

J B Plescia (1999) Gravity signature of the Teague ring impact structure, Western Australia, Large Meteorite Impacts and Planetary Evolution(339), VL Dressler, BO and Sharpton (ed.), p. 165-175, 3300 PENROSE PL, PO BOX 9140, BOULDER, CO 80301 USA: GEOLOGICAL SOC AMER INC, pdf

F Pirajno (2000) Alkali metasomatism in the Shoemaker impact structure, Australia, International Geological Congress, Abstracts = Congres Geologique International, Resumes 31, [International Geological Congress], [location varies], url

P C Thomas, J Veverka, M S Robinson, S Murchie (2001) Shoemaker crater as the source of most ejecta blocks on the asteroid 433 Eros, Nature 413(6854), p. 394-396, url, doi:10.1038/35096513

F Pirajno (2001) Interpreted geology of the Shoemaker impact structure, Geological Survey of Western Australia, Geological Survey of Western Australia, East Perth, West. Aust., url

F Pirajno (2002) Geology of the Shoemaker impact structure, Western Australia, Dynamics of Comets and Asteroids and Their Role in Earth History, p. 25-30, Geological Survey of Western Australia, Perth, West. Aust., url

F Pirajno, P Hawke, a Y Glikson, P W Haines, I Tonguç Uysal (2003) Shoemaker impact structure, Western Australia, Australian Journal of Earth Sciences 50(5), p. 775-796, url, doi:10.1111/j.1440-0952.2003.01027.x

P J Hawke (2003) Interpretation of geophysical data over the Shoemaker impact structure, Earaheedy Basin, Western Australia, Record - Geological Survey of Western Australia, p. 18, Geological Survey of Western Australia, Perth, West. Aust., url

P J Hawke, M C Dentith (2006) The exploration potential of Australia's meteorite impact craters, Abstracts - Geological Society of Australia 82, p. 6, Geological Society of Australia, Sydney, N.S.W., url

C C Allen (2006) Shoemaker Crater - going where we can "see", LPI Contribution, p. 3-4, Lunar and Planetary Institute, Houston, TX, url

F Pirajno, R M Hocking, S M Reddy, A J Jones (2009) A review of the geology and geodynamic evolution of the Palaeoproterozoic Earaheedy Basin, Western Australia, Earth-Science Reviews 94(1-4), p. 39-77, Elsevier B.V., url, doi:10.1016/j.earscirev.2009.03.003

F Pirajno, A Y Glikson (2012) Hydrothermal processes associated with asteroid impacts; examples from Western Australia, International Geological Congress, Abstracts = Congres Geologique International, Resumes 34, p. 3955, [International Geological Congress], [location varies]

O Piazza, B A Cohen (2012) Quantitative comparison of Shoemaker formation ejecta with Ries Crater breccia and suevite, Abstracts with Programs - Geological Society of America 44(7), p. 277, Geological Society of America (GSA), Boulder, CO, url

S Staffieri, A Coletta, M L Battagliere, M Virelli (2019) Shoemaker, Australia, Encyclopedic Atlas of Terrestrial Impact Craters, p. 297-299, Springer, Cham, url, doi:https://doi.org/10.1007/978-3-030-05451-9_76