Gibson, Paul and Lyle, P. (1993) Analysis and Interpretation of Major Magnetic Anomalies within the Tertiary Basalts of North-East Ireland. Irish Journal of Earth Sciences, 12. pp. 149-154. ISSN 0790-1763

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Abstract

Ground magnetometer traverses over drift-covered Tertiary basalt areas in north- east Ireland have revealed large-amplitude anomalies (>2000nT). Fault zones produce characteristic wide-zoned, large-variance, high-frequency anomalies, while faults that juxtapose basalts with different magnetic properties, or basalt against a non-magnetic lithology, can be identified. Plugs and relict fissures both produce large magnetic anomalies (up to 4000nT). Dykes associated with the basalts generally give anomalies of <500nT, with the largest dykes giving a maximum anomaly of- 2000nT. This magnetic profiling technique can be used to identify and interpret geological structures present in the basalts in drift-covered areas with little or no

Item Type:	Article
Keywords:	Analysis; Interpretation; Major Magnetic Anomalies; Tertiary Basalts; North-East Ireland;
Academic Unit:	Faculty of Social Sciences > Geography
Item ID:	8855
Depositing User:	Paul Gibson
Date Deposited:	29 Sep 2017 10:33
Journal or Publication Title:	Irish Journal of Earth Sciences
Publisher:	Royal Irish Academy
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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