Impact fracturing and structural modification of sedimentary rocks at Meteor Crater, Arizona
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چکیده
منابع مشابه
Impact fracturing and structural modification of sedimentary rocks at Meteor Crater, Arizona
[1] Meteor Crater provides a rare opportunity to study impact deformation of sedimentary target rocks and isolate those features from preexisting tectonic deformation and impact-generated reactivation of preexisting tectonic features. This study reports over 2500 new measurements of orientations of bedding, faults, and fractures in crater walls and in surrounding bedrock. Target rocks are chara...
متن کاملErosion of Ejecta at Meteor Crater, Arizona
New methods for estimating erosion at Meteor Crater, Arizona, indicate that continuous ejecta deposits beyond 1/4-1/2 crater radii from the rim (0.25R-0.5R) have been lowered less than 1 m on the average. This conclusion is based on the results of two approaches: coarsening ofunweathered ejectainto surface lag deposits and calculation of the sediment budget within a drainage basin on the ejecta...
متن کاملMeteor Crater, Arizona
The location of Meteor Crater is shown on nearly all highway maps of Arizona. It lies 6 mi (9.7 km) south of 1-40 between Flagstaff and Winslow in northern Arizona; the turnoff from 1-40, 34 mi (55 km) east of Flagstaff, is well marked by signs along the highway. Access to the crater is by a paved road that leads directly to a visitor center and museum on the rim of the crater. Qualified scient...
متن کاملErosional modification and gully formation at Meteor Crater, Arizona: Insights into crater degradation processes on Mars
0019-1035/$ see front matter 2010 Elsevier Inc. A doi:10.1016/j.icarus.2010.03.032 * Corresponding author at: Room No. 122, Main Bu Research Institute, Council of Scientific and Industria Uppal Road, Hyderabad 500 606, Andhra Pradesh, Ind E-mail addresses: [email protected], senthil@ Hydrogeological modification of Meteor Crater produced a spectacular set of gullies throughout the interior ...
متن کاملShock Metamorphism of the Coconino Sandstone at Meteor Crater, Arizona
A study of the shocked Coconino sandstone from Meteor Crater, Arizona, was undertaken to examine the role of porosity in the compression of rocks and in the formation of highpressure phases. A suite of shocked Coconino. specimens collected at the crater is divided into five classes, arranged in .order of decreasing quartz content. The amounts of coesite, stishovite (measured by quantitative X-r...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2008
ISSN: 0148-0227
DOI: 10.1029/2008je003115