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and Earth have very few recognizable impact craters—Io, in fact, is so volcanically active that not a single impact crater, of any size, has been found on its surface to date. The Earth has about 150 recognized craters, but many have been geologically modified and would be difficult to recognize from
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is the surface expression of an impact structure. In many cases, on Earth, the impact crater has been destroyed by erosion, leaving only the deformed rock or sediment of the impact structure behind. This is the fate of almost all old
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fragments that may once have been present would be long since eroded away. Possible impact structures may be initially recognized by their anomalous geological character or
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expression. These may still be confirmed as impact structures by the presence of shocked minerals (particularly
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Traces of
Catastrophe: A Handbook of Shock-Metamorphic Effects in Terrestrial Meteorite Impact Structures
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230:. The University of Arizona space science series. McKinnon, William B.; Khurana, Krishan. Tucson:
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orbit. On the other hand, geologically inactive bodies with old surfaces, such as Earth's
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and other geologically inactive rocky bodies with old surfaces in the
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76:. Impact structure is synonymous with the less commonly used term
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Neuendorf, K.K.E., J.P. Mehl Jr., and J.A. Jackson, eds. (2005)
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Geologic structure formed from impact on a planetary surface
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expressions of an impact crater are no longer obvious. Any
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222:"Surface Properties, Regolith, and Landscape Degradation"
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169:- comprehensive reference on impact crater science
216:Moore, Jeffrey M.; Black, Greg; Buratti, Bonnie;
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246:Bodies with current geological activity such as
83:In an impact structure, the typical visible and
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156:List of possible impact structures on Earth
146:List of largest craters in the Solar System
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220:; Spencer, John; Sullivan, Robert (2009).
289:. p. 120. LPI Contribution No. 954.
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31:is a generally circular or craterlike
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306:at the Lunar and Planetary Institute
141:List of craters in the Solar System
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224:. In Pappalardo, Robert T. (ed.).
151:List of impact structures on Earth
55:of the structure. In contrast, an
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195:(5th ed.). Alexandria, Virginia,
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232:The University of Arizona Press
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868:Lunar and Planetary Institute
700:Cretaceous–Paleogene boundary
287:Lunar and Planetary Institute
197:American Geological Institute
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167:Lunar and Planetary Institute
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760:Planar deformation features
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111:material or other methods.
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863:Impact Field Studies Group
304:Terrestrial Impact Craters
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346:Impact cratering on Earth
833:William Kenneth Hartmann
499:Clearwater East and West
447:Confirmed≥20 km diameter
271:French, Bevan M (1998).
66:ancient pristine craters
51:, whatever the stage of
750:Ordovician meteor event
62:impact craters on Earth
23:Impact crater structure
853:Eugene Merle Shoemaker
730:Late Heavy Bombardment
80:meaning "star wound".
35:structure of deformed
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874:Traces of Catastrophe
858:Earth Impact Database
806:Ralph Belknap Baldwin
310:Earth Impact Database
162:Traces of Catastrophe
126:Earth Impact Database
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218:Phillips, Cynthia B.
193:Glossary of Geology
770:Shock metamorphism
675:Alvarez hypothesis
131:Multi-ringed basin
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823:Edward C. T. Chao
241:978-0-8165-2844-8
68:preserved on the
49:planetary surface
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848:Peter H. Schultz
811:Daniel Barringer
720:Impact structure
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843:Graham Ryder
765:Shatter cone
755:Philippinite
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604:Saint Martin
599:Rochechouart
504:Gosses Bluff
459:Amelia Creek
362:Impact event
273:
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136:Impact event
107:evidence of
82:
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74:Solar System
43:produced by
28:
26:
639:Tookoonooka
624:Steen River
614:Siljan Ring
544:Manicouagan
529:Keurusselkä
105:geochemical
93:geophysical
85:topographic
780:Stishovite
680:Australite
659:Yarrabubba
629:Strangways
589:Presqu'île
564:Montagnais
534:Lappajärvi
484:Charlevoix
469:Beaverhead
464:Araguainha
418:By country
388:Antarctica
199:. 779 pp.
179:References
165:book from
78:astrobleme
745:Moldavite
740:Meteorite
725:Impactite
654:Woodleigh
649:Vredefort
609:Shoemaker
569:Morokweng
554:Mistastin
494:Chicxulub
398:Australia
378:Worldwide
173:Peak ring
89:meteorite
890:Category
799:Research
644:Tunnunik
539:Logancha
509:Haughton
479:Carswell
423:Possible
257:Callisto
115:See also
41:sediment
33:geologic
790:Tektite
785:Suevite
690:Coesite
685:Breccia
634:Sudbury
584:Popigai
579:Obolon'
559:Mjølnir
524:Karakul
514:Kamensk
474:Boltysh
454:Acraman
279:Houston
53:erosion
37:bedrock
668:Topics
549:Manson
403:Europe
383:Africa
238:
227:Europa
203:
45:impact
371:Lists
283:Texas
47:on a
519:Kara
253:Moon
236:ISBN
201:ISBN
70:Moon
255:or
99:),
39:or
27:An
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285::
281:,
277:.
248:Io
244:.
103:,
338:e
331:t
324:v
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