Supporting Online Material

• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: 2; Antarctic; New Zealand; Antarc*
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.650.4447; http://members.iinet.net.au/~glrmc/Carter%26Gammon-Science-FullSOM-04.pdf

ODP Site 1119 is located at water depth 395 m on the upper continental slope and 96 km east of the South Island coast, New Zealand (Fig. 1) (S1). The drillhole penetrated a 0-86 metres composite depth (mcd) interval of upper slope terrigenous silts and fine sands (0-0.252 Ma; MIS 1-8) which are underlain across a small ~25 k.y.-long unconformity (S2) by a further 429 m of similar Late Pliocene-Pleistocene sediment (0.277-3.91 Ma; MIS 8-Gi11). The background core lithology is terrigenous clayey silt and sand. Pre-Leg 181 piston coring had established that sediment deposition on the eastern South Island slope during the last glaciation was characterised by a distinctive grey, mica-rich, hemipelagic mud (S3), and nearby Deep Sea Drilling Project (DSDP) Site 594 (S4) showed that glacial/interglacial cycles back to MIS 25 and beyond comprise an alternating lithological signature of hemipelagic (glacial) and carbonate biopelagic (interglacial) mud The MIS 1-8 sediments above the unconformity represent downlapping shelf-edge clinoforms, deposited on the upper slope ~5 km seaward of the shelf break and ~15 km seaward of the lowstand shoreline. The older sediments below the unconformity mostly comprise sediment drifts (S5, S6) deposited from north-flowing Antarctic Intermediate (AAIW) and Subantarctic Mode (SAMW) waters at slope depths between ~400 and 900 m. Today, Site 1119 lies just seawards of the STF, which is represented off eastern South Island by the