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GSA Special Papers
Geological Implications of Impacts of Large Asteroids and Comets on the Earth
Author(s)
Geological Society of America

Volume
190
Copyright:
© 1982 Geological Society of America
Geological Society of America
ISBN print:
9780813721903
Publication date:
January 01, 1982
Book Chapter
Ejecta of the Ries Crater, Germany *
Author(s)
-
Published:January 01, 1982
Ejecta surrounding the 26-km-diameter Ries Crater, Germany, may be helpful to the interpretation of the Cretaceous Tertiary (C T) Boundary Event. The Ries ejecta can be classified into three major facies: (1) moldavite tektites, (2) Bunte Breccia, and (3) suevite, each of which represents a temporally and spatially distinct ejection regime. The petrographic and geochemical characteristics of each facies are also distinct, reflecting an orderly stratigraphic succession of the Ries target. Moldavites represent early high-speed ejecta originating at or close to the projectile-target interface; Bunte Breccia reflects the major excavation and ejection phase and comprises >90% of all ejecta beyond...
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Index Terms/Descriptors
- Bavaria Germany
- breccia
- Cenozoic
- Central Europe
- chondrites
- composition
- Cretaceous
- distribution
- ejecta
- Europe
- geomorphology
- Germany
- grain size
- impact breccia
- impact craters
- impact features
- impactites
- lithofacies
- lithostratigraphy
- lower Tertiary
- Mesozoic
- metamorphic rocks
- meteor craters
- meteorites
- microtektites
- moldavite
- petrology
- pollution
- Ries Crater
- stony meteorites
- stratigraphic boundary
- suevite
- tektites
- Tertiary
- Upper Cretaceous
- West Germany
- Bunte Breccia
- Nordlingen region
- crater geometry
Latitude & Longitude
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