Near-Regional Waveforms: Selected Observations from Two Eastern North American Earthquake Sequences

1988 ◽  
Vol 59 (4) ◽  
pp. 189-196 ◽  
Author(s):  
Noël Barstow ◽  
Jerry A. Carter ◽  
Paul W. Pomeroy ◽  
George H. Sutton

Abstract The 19 October, 1985 Ardsley, New York magnitude 4.0 mainshock can be characterized as the superposition of three sub-events. Aftershocks of the 31 March, 1982 Miramichi, New Brunswick magnitude 5.0 earthquake occur at nearly the same depth as the mainshock, approximately 3 km, and at least one aftershock is resolvably deeper by several kilometers. These results are interpreted from observations of digital recordings of near-regional seismograms.

1993 ◽  
Vol 67 (1) ◽  
pp. 151-151
Author(s):  
R. William Orr ◽  
Richard H. Fluegeman

In 1990 (Fluegeman and Orr) the writers published a short study on known North American cyclocystoids. This enigmatic group is best represented in the United States Devonian by only two specimens, both illustrated in the 1990 report. Previously, the Cortland, New York, specimen initially described by Heaslip (1969) was housed at State University College at Cortland, New York, and the Logansport, Indiana, specimen was housed at Ball State University, Muncie, Indiana. Both institutions recognize the importance of permanently placing these rare specimens in a proper paleontologic repository with other cyclocystoids. Therefore, these two specimens have been transferred to the curated paleontologic collection at the University of Cincinnati Geological Museum where they can be readily studied by future workers in association with a good assemblage of Ordovician specimens of the Cyclocystoidea.


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