| 词条 | Santa Fe impact structure |
| 释义 |
| name = Santa Fe impact structure | other_name = | photo = Kluft-photo-Shatter cones-Sep-2008-Img 1711.jpg | photo_size = | photo_alt = | photo_caption = Shatter cones at the side of Highway 475 in the Santa Fe impact structure | location = Sangre de Cristo Mountains | map = New Mexico | map_alt = | map_caption = Location of Santa Fe impact structure in New Mexico | map_size = | label_position = | coordinates = {{coord|35|45|N|105|56|W|format=dms|display=inline,title}} | coordinates_ref = | confidence = confirmed[1] | diameter = {{convert|6|km|mi}}-{{convert|13|km|mi}} | age = less than 1.2 billion years | exposed = no | drilled = no | bolide = | topo = | access = SR475 northeast of Santa Fe | country = United States | state = New Mexico | district = Santa Fe County | municipality = }} The Santa Fe impact structure is an eroded remnant of a bolide impact crater in the Sangre de Cristo Mountains northeast of Santa Fe, New Mexico.[1] The discovery was made in 2005 by a geologist who noticed shatter cones in the rocks in a decades-old road cut on New Mexico State Road 475 between Santa Fe and Hyde Memorial State Park. Shatter cones are a definitive indicator that the rocks had been exposed to a shock of pressures only possible in a meteor impact or a nuclear explosion.[2] It is called an "impact structure" and not a crater because it is so deeply eroded. Current estimates place the age of the impact between 1.4 and 1.6 billion years. Only the crater's basement rocks remain on the surface in the mountains today. The estimated diameter of the structure is currently a subject of study. The shatter cones occur for about 1 mile (1.6 km) along the highway, which is interpreted to coincide with a central area within a crater of greater diameter.[3][4] References1. ^1 {{Cite Earth Impact DB | name = Santa Fe | linkname = santafe | accessdate = 2017-10-01}} {{Impact cratering on Earth}}{{NewMexico-geo-stub}}2. ^{{cite book | author = French, Bevan M. | year = 1998 | title = Traces of catastrophe | titlelink = Traces of Catastrophe | publisher = Lunar and Planetary Institute | isbn = | url = http://www.lpi.usra.edu/publications/books/CB-954/CB-954.intro.html | accessdate = 2008-12-31 }} 3. ^{{cite conference | first = S.P. | last = Fackelman |author2=T. H. McElvain |author3=J. R. Morrow |author4=C. Koeberl | title = Shatter Cone Exposures Indicate a New Bolide Impact Structure near Santa Fe, New Mexico | booktitle = Lunar and Planetary Science XXXVIII | publisher = Lunar and Planetary Institute | year = 2007 | url = http://www.lpi.usra.edu/meetings/lpsc2007/pdf/1207.pdf | accessdate = 2008-12-31 }} 4. ^{{cite conference | first = E. L. | last = Tegtmeier |author2=H. E. Newsom |author3=W. E. Elston |author4=T. H. McElvain | title = Breccias and geological setting of the Santa Fe, New Mexico USA impact structure | booktitle = Large Meteorite Impacts and Planetary Evolution IV | publisher = Lunar and Planetary Institute | year = 2008 | url = http://www.lpi.usra.edu/meetings/lmi2008/pdf/3090.pdf | accessdate = 2008-12-31 }} 3 : Impact craters of the United States|Landforms of New Mexico|Landforms of Santa Fe County, New Mexico |
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