Skip to main content
×
Home
    • Aa
    • Aa

Marine Reservoir Correction for the Southern Marshall Islands for the Past 2500 Years

  • Marshall I Weisler (a1), Quan Hua (a2), Jian-xin Zhao (a3), Ai Duc Nguyen (a3), Luke Nothdurft (a4), Hiroya Yamano (a5) and Morana Mihaljević (a6)...
Abstract
Abstract

A robust marine radiocarbon (14C) reservoir correction (ΔR) is essential for calibrating 14C dates of marine mollusks and fish bones routinely found in archaeological sites as discarded food remains and bones of terrestrial animals (including humans) with an appreciable marine diet. New ΔR values are reported for the atoll archipelago of the Marshall Islands, eastern Micronesia. Atolls consist of biogenetic material—mostly coral and foraminifera—that can be directly dated for establishing sequences of atoll emergence and islet development. After sectioning and examination using scanning electron microscopy (SEM) to screen for sample diagenesis, 6 pristine branch coral samples were selected from the modern oceanside beach, 3 archaeological sites, and islet developmental facies from Ebon Atoll (4º34′N, 168º41′E). Each sample was analyzed by U-series and accelerator mass spectrometry (AMS) 14C showing no substantial temporal ΔR variations and yielding a weighted mean ΔR of 41±42 yr 1 spanning ~500 yr before earliest human colonization (the period when islets first became habitable) through the entire 2000-yr occupation sequence. Reliable published ΔR values for Micronesia and Δ14C data for Palmyra Island, together with our results for Ebon Atoll, indicate that the Pacific North Equatorial Counter Current is almost stable for the past 2500 yr.

Copyright
Corresponding author
*Corresponding author. Email: m.weisler@uq.edu.au.
Footnotes
Hide All
1

Note that throughout this paper we use yr as a shortened form of 14C yr when discussing ΔR values.

Footnotes
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Radiocarbon
  • ISSN: 0033-8222
  • EISSN: 1945-5755
  • URL: /core/journals/radiocarbon
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Full text views

Total number of HTML views: 1
Total number of PDF views: 24 *
Loading metrics...

Abstract views

Total abstract views: 94 *
Loading metrics...

* Views captured on Cambridge Core between 27th July 2017 - 20th August 2017. This data will be updated every 24 hours.