URENUI AND KIORE FORMATIONS Days 5 and 6 Field trip stops Day 5 & 6: Urenui and Kiore Formations Modified from King et al. (1993) The majority of Urenui Formation outcrops are bioturbated siltstone with tubular concretions The purpose of this study is to provide a detailed documentation of the outcropping Urenui and Kiore formations and interpret influences on channel formation and fill. Outcrops of the Urenui and Kiore formations Lithofacies Map Section modified from King et al.(1993) Lithofacies Lithofacies 1: Siltstone Lithofacies 3: Conglomerate Lithofacies 2: Sandstone Stop 10: Gully Rock Quarry Highly long-axis imbricated pebble extrabasinal conglomerate Stop 12: Wai-iti Modified from King et al. (1993) Granule extrabasinal conglomerate with shell hash and tubular concretion clasts Stop 11: Urenui Beach Camp Modified from King et al. (1993) Interbedded sandstone and siltstone at the top of the Mimi Channel fill Base of Mimi Channel Stop 8: Onaero Beach Tubular concretions, bioturbated siltstone, and MTD. Modified from King et al. (1993) Stop 9: Waiau Stream Modified from King et al. (1993) Chaotic intrabasinal conglomerate with pebble and granule extrabasinal clasts and shell hash Interbedded sandstone and siltstone in the channel fill Current SPODDS Students: Anne Bernhardt, Lisa Stright, Zane Jobe, Julie Fosdick, Katie Maier, Jon Rotzien, Larisa Masalimova, Glenn Sharman, Blair Burgreen, Acknowledgements Field Assistants: Zane Jobe, Matt Coble, Liz Cassel, Melanie Thompson, Anne Bernhardt Additional Acknowledgements Marty Grove, Gail Mahood (Stanford) Martin Crundwell (GNS) Adam Vonk (Univ. of Waikato; Chevron) Stephanie Nyman (Univ. of Waikato; ExxonMobil) Lorna Strachan (Univ. of Auckland) Peter King, Greg Browne, and Malcolm Arnot Steve Graham and Don Lowe Urenui Mount Messenger Contact The MMF and UF have been interpreted as a continuous sequence, but a large erosional contact exists in the coastal section. This erosional contact may correspond to the large MTD interval in the offshore seismic data. Normal Fault Not formation contact Upper Mount Messenger Facies Truncation Erosional Contact Siltstone-dominated Urenui Fm