St Andrews Research Repository

St Andrews University Home
View Item 
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

A North Atlantic tephrostratigraphical framework for 130-60 ka b2k : new tephra discoveries, marine-based correlations, and future challenges

Thumbnail
View/Open
Abbott_2014_QSR_North_CC.pdf (4.383Mb)
Date
15/12/2014
Author
Davies, S.M.
Abbott, P.M.
Meara, R.H.
Pearce, N.J.G.
Austin, W.E.N.
Chapman, M.R.
Svensson, A.
Bigler, M.
Rasmussen, T.L.
Rasmussen, S.O.
Farmer, E.J.
Keywords
Tephra
Cryptotephra
Tephrostratigraphy
Greenland ice-cores
North Atlantic marine cores
Iceland
Tephra correlations
Glass-shard analysis
Rapid climate changes
GB Physical geography
BDC
R2C
Metadata
Show full item record
Abstract
Building chronological frameworks for proxy sequences spanning 130-60 ka b2k is plagued by difficulties and uncertainties. Recent developments in the North Atlantic region, however, affirm the potential offered by tephrochronology and specifically the search for cryptotephra. Here we review the potential offered by tephrostratigraphy for sequences spanning 130-60 ka b2k. We combine newly identified cryptotephra deposits from the NGRIP ice-core and a marine core from the Iceland Basin with previously published data from the ice and marine realms to construct the first tephrostratigraphical framework for this time-interval. Forty-three tephra or cryptotephra deposits are incorporated into this framework; twenty three tephra deposits are found in the Greenland ice-cores, including nine new NGRIP tephras, and twenty separate deposits are preserved in various North Atlantic marine sequences. Major, minor and trace element results are presented for the new NGRIP horizons together with age estimates based on their position within the ice-core record. Basaltic tephras of Icelandic origin dominate the framework with only eight tephras of rhyolitic composition found. New results from marine core MD99-2253 also illustrate some of the complexities and challenges of assessing the depositional integrity of marine cryptotephra deposits. Tephra-based correlations in the marine environment provide independent tie-points for this time-interval and highlight the potential of widening the application of tephrochronology. Further investigations, however, are required, that combine robust geochemical fingerprinting and a rigorous assessment of tephra depositional processes, in order to trace coeval events between the two depositional realms.
Citation
Davies , S M , Abbott , P M , Meara , R H , Pearce , N J G , Austin , W E N , Chapman , M R , Svensson , A , Bigler , M , Rasmussen , T L , Rasmussen , S O & Farmer , E J 2014 , ' A North Atlantic tephrostratigraphical framework for 130-60 ka b2k : new tephra discoveries, marine-based correlations, and future challenges ' , Quaternary Science Reviews , vol. 106 , pp. 101-121 . https://doi.org/10.1016/j.quascirev.2014.03.024
Publication
Quaternary Science Reviews
Status
Peer reviewed
DOI
https://doi.org/10.1016/j.quascirev.2014.03.024
ISSN
0277-3791
Type
Journal article
Rights
Copyright 2014 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).
Description
The new results presented here have been supported by NERC funding (NE/FE020600/1, NE/F02116X/1, NE/F021445/1, NE/G005230/1). The overall synthesis and review of published data represents the culmination of several years work and support from NERC: NE/D00416/1, NER/S/A/2995/13417, the European Research Council (TRACE project) under the European Union’s Seventh Framework Programme (FP7/2007-2013) / ERC grant agreement no. [259253] and EU-COST ACTION INTIMATE (ESO907).
Collections
  • University of St Andrews Research
URL
https://www.sciencedirect.com/science/article/pii/S0277379114001140?via%3Dihub#appsec1
URI
http://hdl.handle.net/10023/6099

Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

Advanced Search

Browse

All of RepositoryCommunities & CollectionsBy Issue DateNamesTitlesSubjectsClassificationTypeFunderThis CollectionBy Issue DateNamesTitlesSubjectsClassificationTypeFunder

My Account

Login

Open Access

To find out how you can benefit from open access to research, see our library web pages and Open Access blog. For open access help contact: openaccess@st-andrews.ac.uk.

Accessibility

Read our Accessibility statement.

How to submit research papers

The full text of research papers can be submitted to the repository via Pure, the University's research information system. For help see our guide: How to deposit in Pure.

Electronic thesis deposit

Help with deposit.

Repository help

For repository help contact: Digital-Repository@st-andrews.ac.uk.

Give Feedback

Cookie policy

This site may use cookies. Please see Terms and Conditions.

Usage statistics

COUNTER-compliant statistics on downloads from the repository are available from the IRUS-UK Service. Contact us for information.

© University of St Andrews Library

University of St Andrews is a charity registered in Scotland, No SC013532.

  • Facebook
  • Twitter