Lithological variations of sedimentary succession within a meteorite impact crater - Jwaneng South Structure, Botswana
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چکیده
منابع مشابه
Meteorite impact crater in central alaska.
Study of Landsat imagery prompted Cannon (1) to suggest that Sithylemenkat Lake in central Alaska occupies a meteorite impact crater. In support of his thesis, he cites physiographic, structural, geochemical, and aeromagnetic evidence from various published sources. We believe, on the basis of our previous work in the area (2-4), that Cannon has largely misinterpreted these published data, whic...
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Impact craters and associated hydrothermal systems are regarded as sites within which life could originateonEarth,andonMars.TheHaughton impactcrater,oneof themostwell preservedcratersonEarth, is abundant inCa-sulphates. Selenite, a transparent form of gypsum, has been colonized by viable cyanobacteria. Basementrocks,whichhavebeenshocked,aremoreabundant inendolithicorganisms,whencomparedwithunsh...
متن کاملLunar Meteorite Source Crater Size: Constraints from Impact Simulations
Hydrocode simulations of lunar impact events show that craters as small as 450 meters in diameter are viable candidates for the source of most lunar meteorites. The lunar cratering flux implies that 6 impact events of this size occurred on the moon in the last 0.1 Ma. This is in good agreement with the number of impacts (7) inferred from the geochemical analysis of the samples in hand. The resu...
متن کاملMeteorite impact crater discovered in central alaska with landsat imagery.
Several supporting observations indicate that Sithylemenkat Lake, Alaska; occupies a meteorite impact crater formed near the end of the Wisconsinan glaciation. The initial identification with Landsat imagery is attributed to the unique perspective provided by such imagery.
متن کاملExploration of Microbial Diversity and Community Structure of Lonar Lake: The Only Hypersaline Meteorite Crater Lake within Basalt Rock
Lonar Lake is a hypersaline and hyperalkaline soda lake and the only meteorite impact crater in the world situated in basalt rocks. Although culture-dependent studies have been reported, a comprehensive understanding of microbial community composition and structure in Lonar Lake remains elusive. In the present study, microbial community structure associated with Lonar Lake sediment and water sa...
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ژورنال
عنوان ژورنال: Geology, Geophysics & Environment
سال: 2015
ISSN: 0138-0974
DOI: 10.7494/geol.2015.41.4.381