This data set contains the benthic foraminifera d18O and sediment elemental compositions of core MD10-3340 (00°30.98'S, 128°43.47'E, water depth 1094 m) with a total core length of 34.10 m and covering the last 235,000 years, retrieved from the Halmahera Sea, eastern Indonesia. The elemental compositions were measured by X-ray fluorescence (XRF) core-scanning and analyses of XRF and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) on discrete samples. The original XRF core-scanned results of calcium and titanium are corrected for water content (indicated by the scanning intensity of chlorine) following the method described in the original publication.