1 / 17

Symbol

Tectonic and paleoclimatic significance of Quaternary to Holocene-aged river terraces of the Waipaoa Catchment, east coast, North Island, New Zealand. MICHAEL MARDEN , Landcare Research P rivate Bag 445 Gisborne, New Zealand email: mardenm @landcareresearch.co.nz

moanna
Télécharger la présentation

Symbol

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tectonic and paleoclimatic significance of Quaternary to Holocene-aged river terraces of the Waipaoa Catchment, east coast, North Island, New Zealand. MICHAEL MARDEN, Landcare ResearchPrivate Bag 445 Gisborne, New Zealandemail: mardenm @landcareresearch.co.nz KELVIN BERRYMAN, Institute of Geological & Nuclear SciencesP. O. Box 30 368Lower Hutt, New Zealand.email: k.berryman@gns.cri.nz ALAN PALMER, Institute of Natural ResourcesCollege of SciencesMassey University,Palmerston North, New Zealand. email: A.S.Palmer@massey.ac.nz COLIN MAZENGARB, Mineral Resources Tasmania PO Box 56, Rosny Park Tasmania, Australia. email: cmazen@mrt.tas.gov.au

  2. Symbol Base Tephra Age Quat. undifferentiated Qun Rotoehu 110 000+ Waipaoa 4 W4 Rotoehu 90 000 - 110 000 Waipaoa 3 WRe Rotoehu c.50 - 60000 Waipaoa 2a WMn Mangaone c. 33 000 Waipaoa 2 WOm Omateroa 28 220 ±630 Waipaoa 1b WKk Kawakawa 22590 ±230 Waipaoa 1a WOk Okareka c. 18 000 Waipaoa 1 Wrk Rerewhakaaitu 14700 ±110 Holocene 8 HWh Waiohau 118500 ±60 Holocene 7 HKp Karapiti 9820 ±80 Holocene 6 HRm Rotoma 8530 ±10 Holocene 5 HMa Mamuka 7250 ±20 Holocene 4 HWk Whakatane 4830 ±20 Holocene3 HWm Waimihia 3280 ±20 Holocene 2 HTp Taupo 1850 ±10 Holocene 1 HKa Kaharoa 770 ±20 Hun Holocene undifferentiated

  3. Big Picture Scenario • Construct sediment budget for the Waipaoa basin for specific time periods as constrained by dated terraces spanning the last 100ka • Establish differences in mechanism drivers, scale and timing of periods of slope adjustment due to river incision across subcatchments within Waipaoa basin

  4. Reliant on Good Databases • Improve knowledge of terrace ages through tephra analyses and GPS especially in tributary catchments • Intensify work on Holocene terraces • Establish timing of major periods of sedimentation and storage volumes in tributary valley floors • Improve knowledge of subsurface geometry of tributary streams and the main stem of the Waipaoa

More Related