Comparison of LWD log data in Hole U1378A (colored curves) and core measurements in Hole U1378B (black circles). GVR = geoVISION LWD tool; ARC = arcVISION LWD tool; NGR = Natural gamma ray core measurement; IDRO = Image-derived density measured by the adnVISION tool; GRA = Gamma ray attenuation core measurement; MAD = Moisture and density core measurement.