Post by 1dave on Jan 8, 2015 12:52:33 GMT -5
This is an interesting site. United States Meteorite Impact Craters
What this website contains
This continually evolving website lists meteorite impact craters that are located within the United States and for which diagnostic evidence of hypervelocity impact origin has been published in scientific literature. The website also presents an incomplete list of unconfirmed impact location, grouped as such, as well as a few pages that are intended to provide a basic introduction to impact crater science and to the methods and techniques behind the identification of terrestrial impact craters.
The craters listed here largely conform to those listed for the USA in the Planetary and Space Science Centre Earth Impact Database, maintained and hosted by the University of New Brunswick, Canada (PASSC database).
As of Oct. 9, 2013, this website deviates from the PASSC database in 3 ways, as follows: Alamo and Weaubleau are listed as confirmed craters (see individual listings for published unambiguous diagnostic impact evidence and additional references), and Calvin, Michigan is listed as an unconfirmed impact crater, as I have been unable to locate any published or unpublished example of currently recognized criteria. The Alamo and Weaubleau sites clearly show impact evidence, but both are primarily breccia units, and lack unanimously recognized crater boundaries. Beaverhead and Santa Fe both set a prior precedent for recognition of a crater based on the presence of concentrated unambiguous indicators of impact recognized independently of a clear structural boundary. These choices of inclusion and exclusion should be considered critically, based on evidence presented in the relevant scientific literature.
This continually evolving website lists meteorite impact craters that are located within the United States and for which diagnostic evidence of hypervelocity impact origin has been published in scientific literature. The website also presents an incomplete list of unconfirmed impact location, grouped as such, as well as a few pages that are intended to provide a basic introduction to impact crater science and to the methods and techniques behind the identification of terrestrial impact craters.
The craters listed here largely conform to those listed for the USA in the Planetary and Space Science Centre Earth Impact Database, maintained and hosted by the University of New Brunswick, Canada (PASSC database).
As of Oct. 9, 2013, this website deviates from the PASSC database in 3 ways, as follows: Alamo and Weaubleau are listed as confirmed craters (see individual listings for published unambiguous diagnostic impact evidence and additional references), and Calvin, Michigan is listed as an unconfirmed impact crater, as I have been unable to locate any published or unpublished example of currently recognized criteria. The Alamo and Weaubleau sites clearly show impact evidence, but both are primarily breccia units, and lack unanimously recognized crater boundaries. Beaverhead and Santa Fe both set a prior precedent for recognition of a crater based on the presence of concentrated unambiguous indicators of impact recognized independently of a clear structural boundary. These choices of inclusion and exclusion should be considered critically, based on evidence presented in the relevant scientific literature.
Cloud Creek, Wyoming
