New Zealand Journal of Geology and Geophysics abstracts

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Deep seismic reflection profiling in east Taranaki using standard oil-industry acquisition parameters

J. M. RAVENS
ROB O'CONNOR*
HAIZHU
HELEN ANDERSON

Institute of Geological & Nuclear Sciences Ltd
P.O. Box 1320
Wellington, New Zealand

*Present address: ARCO British Ltd, Cross Lanes, Guildford, Surrey GUI 1UE, United Kingdom.

Abstract Acquisition of seismic reflection data designed to image the lower crust is usually an expensive operation. By taking advantage of current petroleum industry surveying, however, and with only slight changes to the acquisition parameters, 51 km of reflection profiles, capable of being processed as deep crustal seismic sections, have been recorded in east Taranaki at negligible additional acquisition cost. The quality of the processed sections is encouraging, and the data show a zone of marked reflectivity between 10 and 12 s two-way time with a north-trending apparent dip of between 5 and 10°. Two factors make interpretation of the data difficult: the short length of the profiles prevents them from being adequately migrated; and their orientation subparallel to the strike of a major fault may be giving rise to spurious, out-of-plane events on the seismic sections.

Keywords deep seismic reflection profile; Taranaki

Received 9 June 1992; published 13 April 1993
New Zealand Journal of Geology & Geophysics, 1991, Vol. 36: 69—75
0028Ð8306/06/3601—0069 ©The Royal Society of New Zealand 1991

PDF file of entire paper: medium quality (2267K); (scanned from paper original: notes about this process). Digitisation of this article from the printed journal was kindly facilitated by the Geological Society of New Zealand

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