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Data & Samples > Core Samples >
Sample Types
The following table provides guidelines for typical sample volumes taken from ODP/IODP cores.
|
| Sample |
Typical volume |
|
| Thin-section billets |
10 cm3 up to 50 cm3 for large-grained plutonic rocks |
| Alkenone (Uk37) |
5 cm3 |
| X-ray diffraction |
5 cm3 |
| X-ray fluorescence |
20 cm3 (sediments), 20-50 cm3 (igneous/sulfides—varies depending on grain size and homogeneity of rock) |
| Carbonate |
2
cm3 |
| Paleomagnetism |
7-cm3 cubes, 12-cm3 minicores, 600-cm3 U-channels |
| Moisture and density |
10-20 cm3 |
| Grain size |
10-20 cm3, depending upon coarseness |
| Planktonic foraminifers |
10
cm3 |
| Benthic foraminifers |
10-20 cm3 |
| Nannofossils |
2
cm3 |
| Diatoms |
5-10 cm3 |
| Radiolarians |
10
cm3 |
| Palynology |
10-15 cm3 |
| Organic samples |
20
cm3 |
| Interstitial porewaters |
whole rounds 5-20 cm long, based on water content |
| Inorganic geochemistry |
10
cm3 |
| Organic geochemistry |
10
cm3 |
| Sedimentology |
10-20 cm3 |
| Slabs (for laminae studies) |
25-50 cm3, depending on slab length |
| Slabs (large-grained plutonic rocks) |
50-100 cm3, often shared by scientists for multiple analyses |
| Stable isotopes (C, O) |
10-20 cm3 |
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