IODP Expedition 317: Exploring the Record of Sea-Level Change off New Zealand
Expedition 317 investigated the record of global sea-level change (eustasy) within continental margin sedimentary sequences and how eustasy interacts with local forcing to produce preserved sedimentary architectures. The Canterbury Basin, on the eastern margin of the South Island of New Zealand, was...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2011-09-01
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| Series: | Scientific Drilling |
| Subjects: | |
| Online Access: | http://www.iodp.org/index.php?option=com_docman&task=doc_download&gid=3258 |
| _version_ | 1818147577380470784 |
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| author | Peter Blum Koichi Hoyanagi Craig S. Fulthorpe the IODP Expedition 317 Scien |
| author_facet | Peter Blum Koichi Hoyanagi Craig S. Fulthorpe the IODP Expedition 317 Scien |
| author_sort | Peter Blum |
| collection | DOAJ |
| description | Expedition 317 investigated the record of global sea-level change (eustasy) within continental margin sedimentary sequences and how eustasy interacts with local forcing to produce preserved sedimentary architectures. The Canterbury Basin, on the eastern margin of the South Island of New Zealand, was selected to study these complex interactions because of high rates of Neogene sediment supply fromthe uplifting Southern Alps. This sediment input results in a high-frequency (~0.1–0.5 My periods) record of depositional cyclicity that is modulated by the presence of strong ocean currents. The expedition recovered sediments as old as Eocene but focused on the sequence stratigraphy of the late Miocene to Recent, when global sea-level change was dominated by glacioeustasy. A transect of three sites was drilled on the continental shelf (Sites U1353, U1354, and U1351), plus one on the continental slope (Site U1352). The transectsamples the shallow-water environment most directly affected by relative sea-level change. Lithologic boundaries, provisionally correlative with seismic sequence boundaries, have been identified in cores from each site. Continental slope Site U1352 provides a record of ocean circulation and fronts during the last ~35 My. The early Oligocene (~30 Ma)Marshall Paraconformity was the deepest target ofExpedition 317 and is hypothesized to represent intensified current erosion or non-deposition associated with the initiation of thermohaline circulation in the region. Expedition 317 involved operational challenges for JOIDES Resolution, including shallow-water, continental-shelf drilling and deep penetrations. Despitethese challenges, Expedition 317 set a number of records for scientific ocean drilling penetration and water-depth. |
| first_indexed | 2024-12-11T12:37:27Z |
| format | Article |
| id | doaj.art-cebcd9cd7d1b4ca1bddbde62d27f9db7 |
| institution | Directory Open Access Journal |
| issn | 1816-8957 1816-3459 |
| language | English |
| last_indexed | 2024-12-11T12:37:27Z |
| publishDate | 2011-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Scientific Drilling |
| spelling | doaj.art-cebcd9cd7d1b4ca1bddbde62d27f9db72022-12-22T01:07:04ZengCopernicus PublicationsScientific Drilling1816-89571816-34592011-09-011241410.2204/iodp.sd.12.01.2011IODP Expedition 317: Exploring the Record of Sea-Level Change off New ZealandPeter BlumKoichi HoyanagiCraig S. Fulthorpethe IODP Expedition 317 ScienExpedition 317 investigated the record of global sea-level change (eustasy) within continental margin sedimentary sequences and how eustasy interacts with local forcing to produce preserved sedimentary architectures. The Canterbury Basin, on the eastern margin of the South Island of New Zealand, was selected to study these complex interactions because of high rates of Neogene sediment supply fromthe uplifting Southern Alps. This sediment input results in a high-frequency (~0.1–0.5 My periods) record of depositional cyclicity that is modulated by the presence of strong ocean currents. The expedition recovered sediments as old as Eocene but focused on the sequence stratigraphy of the late Miocene to Recent, when global sea-level change was dominated by glacioeustasy. A transect of three sites was drilled on the continental shelf (Sites U1353, U1354, and U1351), plus one on the continental slope (Site U1352). The transectsamples the shallow-water environment most directly affected by relative sea-level change. Lithologic boundaries, provisionally correlative with seismic sequence boundaries, have been identified in cores from each site. Continental slope Site U1352 provides a record of ocean circulation and fronts during the last ~35 My. The early Oligocene (~30 Ma)Marshall Paraconformity was the deepest target ofExpedition 317 and is hypothesized to represent intensified current erosion or non-deposition associated with the initiation of thermohaline circulation in the region. Expedition 317 involved operational challenges for JOIDES Resolution, including shallow-water, continental-shelf drilling and deep penetrations. Despitethese challenges, Expedition 317 set a number of records for scientific ocean drilling penetration and water-depth.http://www.iodp.org/index.php?option=com_docman&task=doc_download&gid=3258IODP Expedition 317 |
| spellingShingle | Peter Blum Koichi Hoyanagi Craig S. Fulthorpe the IODP Expedition 317 Scien IODP Expedition 317: Exploring the Record of Sea-Level Change off New Zealand Scientific Drilling IODP Expedition 317 |
| title | IODP Expedition 317: Exploring the Record of Sea-Level Change off New Zealand |
| title_full | IODP Expedition 317: Exploring the Record of Sea-Level Change off New Zealand |
| title_fullStr | IODP Expedition 317: Exploring the Record of Sea-Level Change off New Zealand |
| title_full_unstemmed | IODP Expedition 317: Exploring the Record of Sea-Level Change off New Zealand |
| title_short | IODP Expedition 317: Exploring the Record of Sea-Level Change off New Zealand |
| title_sort | iodp expedition 317 exploring the record of sea level change off new zealand |
| topic | IODP Expedition 317 |
| url | http://www.iodp.org/index.php?option=com_docman&task=doc_download&gid=3258 |
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