Navigation Links
Scientists improve dating of early human settlement
Date:11/15/2012

A Simon Fraser University archaeologist and his colleagues at the University of Queensland in Australia have significantly narrowed down the time frame during which the last major chapter in human colonization, the Polynesian triangle, occurred.

SFU professor David Burley, Marshall Weisler and Jian-Xin Zhao argue the first boats arrived between 880 and 896 BC. The 16-year window is far smaller than the previous radiocarbon-dated estimate of 178 years between 2,789 and 2,947 years ago.

Burley, the lead author, and his colleagues have recently had their claims published in an article in the open access journal PLOS ONE.

Polynesia, a group of 1,000 islands forming a geographic triangle connecting Hawaii, New Zealand and Easter Island in the South Pacific Ocean, is one of the last landscapes discovered and settled by humans.

Burley's team applied uranium/thorium dating to a series of coral artifacts recovered from a site in Tonga known to be the first settlement location for Polynesia.

This dating technique is not new, having been used previously to date coral reefs and stalagmites in caves and other materials. But this study's authors had to develop new processes and verification protocols to achieve their more precise dating of the Tongan artifacts.

When the results came back from a Queensland University lab, Burley says his only comment was: "Wow! It is spooky that we can track an event that happened so long ago to such an exact period of time."

The researchers dated coral files, common day artifacts used to file-down wood or shell materials for manufacturing other artifacts. Thirteen of these were successfully dated, all nicely falling into a temporal sequence from top to bottom of their archaeological siting.

Burley is most excited about a coral file found in the very bottom of the site. Not only does it have the oldest date, but also it was found in beach sand, over which the archaeological site formed. "It is the beach on which first landfall took place, and we now know exactly when that happened," says Burley.

Simon Fraser University is Canada's top-ranked comprehensive university and one of the top 50 universities in the world under 50 years old. With campuses in Vancouver, Burnaby and Surrey, B.C., SFU engages actively with the community in its research and teaching, delivers almost 150 programs to more than 30,000 students, and has more than 120,000 alumni in 130 countries.


'/>"/>

Contact: Carol Thorbes
cthorbes@sfu.ca
778-782-3035
Simon Fraser University
Source:Eurekalert

Related biology news :

1. Stanford scientists develop gene therapy approach to grow blood vessels in ischemic limbs
2. Queens scientists seek vaccine for Pseudomonas infection
3. Scientists produce eye structures from human blood-derived stem cells
4. American Society of Plant Biologists honors early career women scientists
5. Brandeis scientists win prestigious prize for circadian rhythms research
6. Scientists discover new method of proton transfer
7. Salk scientists open new window into how cancers override cellular growth controls
8. WileyChina.com - Now Featuring Bespoke Pages for China’s Life Scientists
9. Scientists win $2 million to study new pathway in development and maintenance of lymphoma
10. UGA scientists reveal genetic mutation depicted in van Goghs sunflower paintings
11. Genetic mutation depicted in van Goghs sunflower paintings revealed by scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/21/2016)... 2016 --> ... research report "Emotion Detection and Recognition Market by Technology (Bio-Sensors, ... Expression, Voice Recognition and Others), Services, Application Areas, ... 2020", published by MarketsandMarkets, the global Emotion Detection ... 22.65 Billion by 2020, at a CAGR of ...
(Date:1/20/2016)... JOSE, Calif. , Jan. 20, 2016 /PRNewswire/ ... developer of human interface solutions, today announced sampling ... controller solution for wearables and small screen applications ... such as printers. Supporting round and rectangular shapes, ... S1423 offers excellent performance with moisture on screen, ...
(Date:1/13/2016)... 13, 2016 --> ... new market report titled - Biometric Sensors Market - Global ... - 2023. According to the report, the global biometric sensors market was ... to reach US$1,625.8 mn by 2023, expanding at a ... of volume, the biometric sensors market is expected to ...
Breaking Biology News(10 mins):
(Date:2/12/2016)... , February 12, 2016 ... by Enabling Scientific Understanding of Complex Diseases Such ... Diseases --> --> ... in South Asia and a leading provider of genomics ... $10 million to the GenomeAsia 100K consortium as ...
(Date:2/11/2016)... -- Neurocrine Biosciences, Inc. (NASDAQ: NBIX ) today announced its financial ... --> --> For the fourth ... million, or $0.34 loss per share, compared to a net loss ... period in 2014. For the year ended December 31, 2015, the ... per share, as compared to a net loss of $60.5 million, ...
(Date:2/11/2016)... HILDEN , Germany and ... QGEN ; Frankfurt Prime Standard: ... new QIAseq Targeted RNA Panels for gene expression profiling, ... next-generation sequencing (NGS). The panels enable researchers to select ... expression fold changes and discover interactions between genes, cellular ...
(Date:2/11/2016)... , Feb. 11, 2016  Spectra BioPharma Selling ... (CSO) that provides biopharma companies the experience, expertise, ... and deploy outsourced sales teams. Created in concert ... addresses both the strategic and tactical needs of ... sales solutions through both personal and non-personal promotion. ...
Breaking Biology Technology: