Figure 3. The ¹⁸O and aragonite records versus depth. Selected isotopic stages are indicated. The glacial/interglacial variations throughout the record are large relative to typical low-latitude records showing that sea-surface conditions varied significantly throughout the mid-late Quaternary. The largest change was found at the isotopic Stage 9/8 transition (~3). However, the heavy glacial Stage 8 ¹⁸O values may have been altered slightly by diagenesis. Amplitude change increased after isotopic Stage 12. The interglacial ¹⁸O values decreased after isotopic Stage 12, which is indicated by the horizontal dashed line.