Research Commons
      • Browse 
        • Communities & Collections
        • Titles
        • Authors
        • By Issue Date
        • Subjects
        • Types
        • Series
      • Help 
        • About
        • Collection Policy
        • OA Mandate Guidelines
        • Guidelines FAQ
        • Contact Us
      • My Account 
        • Sign In
        • Register
      View Item 
      •   Research Commons
      • University of Waikato Research
      • Science and Engineering
      • Science and Engineering Papers
      • View Item
      •   Research Commons
      • University of Waikato Research
      • Science and Engineering
      • Science and Engineering Papers
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      35,000 years of hydrological variability in northern New Zealand from speleothem magnetism

      Fox, Bethany; Lascu, Ioan; Harrison, Richard; Breitenbach, Sebastian; Hartland, Adam
      Thumbnail
      Files
      EGU2018-9793.pdf
      Published version, 34.35Kb
      Link
       meetingorganizer.copernicus.org
      Citation
      Export citation
      Fox, B., Lascu, I., Harrison, R., Breitenbach, S., & Hartland, A. (2018). 35,000 years of hydrological variability in northern New Zealand from speleothem magnetism. In European Geosciences Union General Assembly 2018 (Vol. 20, pp. 9793–9793). Conference held Vienna, Austria.
      Permanent Research Commons link: https://hdl.handle.net/10289/12721
      Abstract
      Speleothem magnetism is the study of the origin and geo-enviromagnetic significance of magnetic minerals in speleothems. Allogenic magnetic particles are transported to speleothem sites from soils and sediments by hydrological and aeolian processes. The two main hydrologic transport mechanisms are infiltration through karst porosity and entrainment in fluvial transport. Cave ventilation constitutes a third input mechanism, supplying aeolian particulate matter. Water percolating from the surface tends to discriminate towards smaller, pedogenic magnetic mineral grains, whereas fluvial and aeolian processes discriminate towards larger, non-pedogenic (lithogenic) grains. If magnetic populations in speleothem calcite samples can be thoroughly characterised, individual components can be recognised which relate to specific processes of transport, and the contributions of these components can be used to reconstruct variability in the strength of these processes over the depositional period of the speleothem.
      Date
      2018
      Type
      Conference Contribution
      Rights
      © Author(s) 2018. CC Attribution 4.0 license.
      Collections
      • Science and Engineering Papers [3069]
      Show full item record  

      Usage

      Downloads, last 12 months
      85
       
       

      Usage Statistics

      For this itemFor all of Research Commons

      The University of Waikato - Te Whare Wānanga o WaikatoFeedback and RequestsCopyright and Legal Statement