Kawerau Geothermal Field well logs

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Milicich, S.D. 2013 Kawerau Geothermal Field well logs. Lower Hutt, N.Z.: GNS Science. GNS Science report 2013/06 28 p.

Abstract: This science report presents revised stratigraphic and lithological logs for wells drilled in the Kawerau Geothermal Field between 1952 and September 2012. The revised logs result benefit from insights obtained by U-Pb dating in 2011-12 on selected Kawerau core samples, and detailed petrographic and hand-specimen examination of core and drill chip samples (Milicich et al. (2013 a,b). Consequently, the stratigraphy and lithology in this report supersede those in logs published in Browne (1978) and Tulloch (1990) and other Kawerau geological reports and Resource Consent documentation up to September 2012. The well logs in this report are a record of the geological sequence, from surface to approximately 3 km depth, encountered by wells in the Kawerau (prefixed KA) and Putauaki (prefixed PK) sectors of the Kawerau Geothermal Field. The purpose of this report is to provide a listing of the Kawerau well stratigraphy that can be used by future geothermal research and industry specialists. (auth)