Type of Document	Master's Thesis
Author	D'Angelo, Richard M.
URN	etd-11142012-040103
Title	Correlation of seismic reflection data with seismicity over the Ramapo, New Jersey, fault zone
Degree	Master of Science
Department	Geophysics
Advisory Committee	Advisor Name Title Costain, John K. Committee Chair Glover, Lynn III Committee Member Ratcliffe, N. M. Committee Member Robinson, Edwin S. Committee Member
Keywords	Geology
Date of Defense	1985-07-24
Availability	restricted
Abstract Reflection seismic data, mylonite reflectivity, gravity data, and earthquake hypocenters have been integrated into a possible explanation for seismicity in the Ramapo fault area. Seven reflection seismic lines were processed using variations in sorting and residual statics. Single VIBROSEIS sweeps were treated as separate sourcepoints. Compressional velocities and densities were determined in the laboratory. Reflection coefficients and gravity models provide evidence for reflections from mylonite zones. Earthquake hypocenters were projected into the vertical seismic sections. The results suggest a correlation between rock volumes containing hypocenters and rock volumes containing mylonite zones. The seismic line furthest from the Taconic suture displays fewer hypocenters and mylonites, in agreement with an assumed model of mylonite development possibly associated with obduction of continental crust. The mylonite zones in the basement may serve as local areas of crustal weakness for seismic activity occurring in the area.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access  LD5655.V855_1985.D354.pdf 7.15 Mb 00:33:06 00:17:01 00:14:53 00:07:26 00:00:38 next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.

If you have questions or technical problems, please Contact DLA.