Electron backscatter diffraction (EBSD) as a tool for detection of coral diagenesis
Electron backscatter diffraction (EBSD) as a tool for detection of coral diagenesis
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DOI：
10.1007/s00338-008-0414-3
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发表时间：
2008-12-01
期刊：
影响因子：
3.5
通讯作者：
Allison, N.
中科院分区：
文献类型：
--
作者：
Cusack, M.;England, J.;Allison, N.
利用电子背散射衍射（EBSD）分析了完整的现代和化石珊瑚骨架的精细结构，以确定次生胶结物和相的变化。EBSD分析显示，现代骨架的内石器钻孔中存在次生文石胶结物，化石骨架的整体分离被方解石所取代，尽管x射线衍射（XRD）总体分析表明只有文石存在。通过EBSD分析对珊瑚样本进行非破坏性的原位筛选，为评估变化程度提供了一种有价值的工具，并可以确定哪些地区可能产生更可靠的气候代理数据。
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.