Electron backscatter diffraction (EBSD) as a tool for detection of coral diagenesis

被引：0
|
作者：
M. Cusack
J. England
P. Dalbeck
A. W. Tudhope
A. E. Fallick
N. Allison
机构：
[1] University of Glasgow,Department of Geographical & Earth Sciences
[2] University of Edinburgh,School of Geosciences, Grant Institute
[3] Scottish Universities Environmental Research Centre,School of Geography & Geosciences
[4] University of St. Andrews,undefined
来源：
Coral Reefs | 2008年 / 27卷
关键词：
Electron backscatter diffraction (EBSD); Diagenesis; Calcite; Dissepiments;
D O I：
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摘要：
Fine-scale structures of intact modern and fossil coralline skeletons were analysed to determine alteration to secondary cements and phases using electron backscatter diffraction (EBSD). EBSD analysis revealed secondary aragonite cements in endolithic borings in the modern skeleton and whole dissepiments of the fossil skeleton replaced by calcite, despite X-ray diffraction (XRD) bulk analysis of the general area suggesting only aragonite was present. Non-destructive, in situ screening of coral samples by EBSD analysis provides a valuable tool for assessing the extent of alteration and can determine which areas may produce more reliable climate proxy data.
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