Table 1.

EDS carbonate analyses for various cement types from samples A and B

Sample ASample E
Cement typeTeredinid tubeWood cementTube sediment cementLarger micro‐fracture cementMacro‐fracture cementTeredinid tubeWood cementTube sediment cementSmaller micro‐fracture cementMacro‐fracture cement
PO2O50.000.220.270.230.150.000.320.080.060.10
FeO*0.002.261.812.863.340.000.462.5537.362.54
MnO0.000.711.140.420.250.000.420.120.300.13
MgO0.231.861.571.812.151.304.930.809.401.10
CaO55.7948.9351.6449.3050.7255.5650.7554.417.2052.32
Total56.0253.9956.4254.6256.6056.8656.8857.9654.3256.19
  • Fe2+ and Fe3 are not differentiated during EDS analysis, therefore all Fe is assumed to be FeO in carbonate minerals.

  • Each analysis is a mean of five. Phosphate is included to show how the proportion of cryptocrystalline apatite varies.