Abstract
Abstract Okahukura Peninsula, Kaipara Harbour, is underlain by rocks of the West Northland Chaos-breccia (emplaced in the upper Oligocene to lower Miocene), Waitemata Group (upper Oligocene to lower Miocene), Waitakere Group (lower Miocene), and Quaternary dune and terrace deposits. The West Northland Chaosbreccia is inferred to underlie the Waitemata Group; it consists of blocks of chert, argillaceous micrite, and glauconitic sandstone, in a matrix of bentonitic clay. The Waitemata Group is represented by the Timber Bay Formation, thin interbedded mudstones and rippled fine sandstones, up to 1000 m thick; it rests on an irregular surface of the underlying Chaos-breccia. The Waitakere Group is divided into three formations. The new Okahukura Formation contains a prominent, coarse igneous conglomerate, the Matapoura Conglomerate Member, and a wide variety of flysch, flysch-like lithologies, mudstones, cross-bedded sands, fine igneous conglomerates, argillaceous micrite breccias, and slumped blocks. There i...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.