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Browsing by Author "Orphal, Dennis L."

Browsing by Author "Orphal, Dennis L."

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  • An alternative model for the Manicouagan impact structure 
    Orphal, Dennis L.; Schultz, Peter H., 1944- (Pergamon Press, 1978)
    The 210 m.y. old Manicouagan impact structure of eastern Quebec has been previously interpreted as an analog of large (400 km diameter) multi-ringed basins on the Moon. However, existing geologic evidence also supports an ...
  • Calculational investigation of impact cratering dynamics: Early time material motions 
    Thomsen, Jeffrey M.; Austin, Michael G.; Ruhl, Stephen F.; Schultz, Peter H., 1944-; Orphal, Dennis L. (Pergamon Press, 1979)
    Early time two-dimensional finite difference calculations of laboratory-scale hypervelocity (6 km/sec) impact of 0.3 g spherical 2024 aluminum projectiles into homogeneous plasticene clay targets were performed and the ...
  • Calculational investigation of impact cratering dynamics: Material motions during the crater growth period 
    Austin, Michael G.; Thomsen, Jeffrey M.; Ruhl, Stephen F.; Orphal, Dennis L.; Schultz, Peter H., 1944- (Pergamon Press, 1980)
    A two-dimensional finite difference calculation of a laboratory-scale hypervelocity (6 km/sec) impact of a 0.3 g spherical 2024 aluminum projectile into a homogeneous plasticene clay halfspace has been carried out to a ...
  • Impact melt generation and transport 
    Orphal, Dennis L.; Borden, W. F.; Larson, S. A.; Schultz, Peter H., 1944- (Pergamon Press, 1980)
    A series of continuum mechanics computer code calculations are planned to investigate the effects of variations in impactor mass and velocity on the generation and transport of impact melt. Results from the first two ...
  • Multi-ring basin formation: Possible clues from impact cratering calculations 
    Schultz, Peter H., 1944-; Orphal, Dennis L.; Miller, B.; Borden, W. F.; Larson, S. A. (Pergamon Press, 1981)
    Finite-difference codes of impact crater formation (1-2 km diameter) reveal trends that may provide clues for the formation of multi-ringed basins.

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