Figure 4. CaCO3, delta13C, and delta18O values and concentrations of CaCO3, organic carbon, dissolved interstitial sulfate, and headspace-analyzed interstitial methane in Pliocene-Pleistocene sediments from Site 898 on the Iberia Abyssal Plain. The base of turbiditic Unit I is 162 mbsf at this site.

Figure 4. CaCO₃,

¹³C, and

¹⁸O values and concentrations of CaCO₃, organic carbon, dissolved interstitial sulfate, and headspace-analyzed interstitial methane in Pliocene-Pleistocene sediments from Site 898 on the Iberia Abyssal Plain. The base of turbiditic Unit I is 162 mbsf at this site.