Robotic micromilling of tree-rings: A new tool for obtaining subseasonal environmental isotope records

被引：27

作者：

Dodd, Justin P. ^{[1
]}

Patterson, William P. ^{[1
]}

Holmden, Chris ^{[1
]}

Brasseur, Jason M. ^{[1
]}

机构：

[1] Univ Saskatchewan, Dept Geol Sci, Saskatchewan Isotope Lab, Saskatoon, SK S7N 5E2, Canada

来源：

CHEMICAL GEOLOGY | 2008年 / 252卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

high-resolution; intra-ring; cellulose; delta O-18; delta C-13; delta D;

D O I：

10.1016/j.chemgeo.2008.01.021

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

High-resolution, intra-ring delta O-18, delta D, and delta C-13 values of modem tree species (Picea glauca, Larix laricina, and Populus grandidentata) were obtained using a robotic micromill. The micromilling apparatus permits accurate mapping and sampling of growth bands at a resolution of a few mu m, producing a fine, homogenous powder that facilitates chemical processing and analyses of very small aliquots of alpha-cellulose and cellulose nitrate (similar to 100 mu g). Considerable intra-ring isotope variability observed in tree samples in this study correlates with temperature and precipitation data indicating that intra-ring variability in delta O-18, delta C-13, and delta D has great potential for reconstructing high-resolution variation in meteorological conditions throughout the growing season. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：21 / 30

页数：10

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