A simple radiocarbon dating method for determining the age and growth rate of deep-sea sponges

被引：25
作者：
Fallon, S. J. [1 ]
James, K. [1 ]
Norman, R. [1 ]
Kelly, M. [2 ]
Ellwood, M. J. [1 ]
机构：
[1] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia
[2] Natl Inst Water & Atmospher Res Ltd, Natl Ctr Aquat Biodivers & Biosecur, Auckland, New Zealand
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2010年 / 268卷 / 7-8期
基金：
澳大利亚研究理事会;
关键词：
Dating sponge spicules; Hexactinellid; Antartica;
D O I：
10.1016/j.nimb.2009.10.143
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The ability to reliably age siliceous sponges is explored using radiocarbon dating of several hexactinellid sponge specimens including Rossella racovitzae racovitzae Topsent, 1901 (C. Hexactinellida: O. Lyssacinosida: F. Rossellidae), collected from the Ross Sea, Antarctica. The optimal pretreatment was found to consist of both sequential acid digestion and pre-roasting at temperatures >400 degrees C. Subsequent combustion at 900 degrees C liberated the proteinaceous material within the spicule matrix and once the reservoir age of the surrounding water was accounted for, a linear extension rate was calculated to be around 2.9 mm yr(-1), aging the sponge at similar to 440 years old. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1241 / 1243
页数：3
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