Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 905-911 |
| Number of pages | 7 |
| Journal | Coral Reefs |
| Volume | 27 |
| DOIs | |
| Publication status | Published - Dec 2008 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 13 Climate Action
Keywords
- Electron backscatter diffraction (EBSD)
- Diagenesis
- Calcite
- Dissepiments
- PAPUA-NEW-GUINEA
- CLIMATE-CHANGE
- EL-NINO
- SOUTHERN-OSCILLATION
- CALCIUM-CARBONATE
- SKELETAL GROWTH
- HUON-PENINSULA
- MASSIVE CORALS
- CATHODE RAYS
- ARAGONITE
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