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Lithofacies, paleoenvironments and elements of sequence architecture, Late Oligocene - earliest Miocene Castle Craig Subgroup (Te Kuiti Group), Waikato-King Country Basin, New Zealand

Abstract
This report presents a comprehensive facies and sequence stratigraphic analysis of the Late Oligocene Castle Craig Subgroup (Orahiri Formation and Otorohanga Limestone) within the Late Eocene – Earliest Miocene Te Kuiti Group in the Waikato-King Country Basin in central-western North Island, New Zealand. Detailed field investigations have identified 12 lithofacies within the Castle Craig Subgroup, which have been grouped into three lithofacies associations named limestone, mixed carbonate-siliciclastic sandstone, and siliciclastic sandstone after the dominant lithologies. In areas south of Aotea Harbour the subgroup comprises a wide variety of limestone types with variable siliciclastic content, dominated by coarse skeletal rudstone/grainstone, with aggregate stratigraphic thicknesses of up to 100 m. These sediments accumulated at shelf depths in a moderate to highenergy tidal seaway. Around Raglan Harbour and in areas to the north, the subgroup comprises predominantly planktic foraminiferal-rich packstone to wackestone and calcareous siltstone/marl that accumulated mainly in slope/upper bathyal settings.
Type
Commissioned Report for External Body
Type of thesis
Series
Petroleum Reports
Citation
Kamp, P.J.J., Tripathi A.R.P., and Nelson, C.S. (2014). Lithofacies, paleoenvironments and elements of sequence architecture, Late Oligocene - earliest Miocene Castle Craig Subgroup (Te Kuiti Group), Waikato-King Country Basin, New Zealand. Ministry of Business, Innovation and Employment, New Zealand, unpublished Petroleum Report PR4881, 45 p.
Date
2014
Publisher
Degree
Supervisors
Rights
© Copyright 2014 The University of Waikato.