Tectonics of the Oceanographer Transform: Seismic Evidence

Ocean-bottom seismographs (OBS's) were used in a combined refraction and microearthquake monitoring experiment at the eastern junction of the Oceanographer transform with the mid-Atlantic ridge at 35 N. Microearthquake activity at the junction occurred over a zone at least 7 km wide. Microearth...

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Bibliographic Details
Main Authors: Rowlett,Hugh, Perez,Omar
Other Authors: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY PALISADES N Y
Format: Text
Language:English
Published: 1978
Subjects:
Physical and Dynamic Oceanography
Seismology
*SEISMIC DATA
*EARTHQUAKES
*OCEAN BOTTOM
MONITORING
SEISMIC DETECTION
FAULTS(GEOLOGY)
NORTH ATLANTIC OCEAN
TECTONICS
SEISMOGRAPHS
Mid-Atlantic Ridge
North Atlantic
Online Access:http://www.dtic.mil/docs/citations/ADA070756
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA070756
Description
Summary:Ocean-bottom seismographs (OBS's) were used in a combined refraction and microearthquake monitoring experiment at the eastern junction of the Oceanographer transform with the mid-Atlantic ridge at 35 N. Microearthquake activity at the junction occurred over a zone at least 7 km wide. Microearthquakes that were located define a linear zone of faulting up to 12 km in length and about 3 km in width that is oblique to both the local strike of the median valley and transform valley and the present direction of spreading. These microearthquakes appear to be associated with fault scarps that form the inner walls on the west and north sides of the median and transform valleys.

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