International Ocean Discovery Program (IODP) Site U1462 is 50 km north of the Montobello Islands in the Northern Carnarvon Basin, ~150 m from the Fisher-1 industry well (Figures F1, F2). Site U1462 is on the outer edge (87 m water depth) of a middle ramp (James et al., 2004). The seabed in the region is carbonate-rich (>90%) gravel and sand with minor mud (Jones, 1973; James et al., 2004). Coring at Site U1462 targeted a sequence of shelfal to shelf-edge carbonates that overlie a Miocene sand unit (the Bare Formation) (Figure F3).
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Site U1463
International Ocean Discovery Program (IODP) Site U1463 is ~150 m from the Picard-1 industry well (141 m water depth) on a flat outer ramp region (James et al., 2004). The site is 100 km southwest of IODP Site U1464 (Figures F1, F2). The seabed in the region is poorly sorted carbonate-rich (>90%) sediment made up of bioclastic gravel, sand, and mud (Jones, 1973; James et al., 2004). The wireline gamma ray log data from the Picard-1 Well reveals high variability and an upward reduction that is interpreted to be related to subsidence, glacioeustatic fluctuations, and climate variability from the Pliocene to recent.
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- Award ID(s):
- 1326927
- PAR ID:
- 10578932
- Author(s) / Creator(s):
- ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »
- Publisher / Repository:
- International Ocean Discovery Program
- Date Published:
- Volume:
- 356
- Issue:
- 108
- ISSN:
- 2377-3189
- ISBN:
- 978-1-954252-49-3
- Subject(s) / Keyword(s):
- International Ocean Discovery Program IODP Expedition 356 JOIDES Resolution Site U1463 Northern Carnarvon Basin Indonesian Throughflow Miocene Pliocene Pleistocene Australian monsoon subsidence aridity anhydrite tropical carbonates
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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International Ocean Discovery Program (IODP) Site U1461 is 100 km northwest of Barrow Island in the Northern Carnarvon Basin, ~150 m from the West Tryal Rocks-2 industry well (Figure F1). Site U1461 is on the shelf edge of an outer ramp (James et al., 2004). The seabed in the region is poorly sorted carbonate-rich (>90%) sediment made up of bioclastic gravel, sand, and mud (Jones, 1973; James et al., 2004). Coring at Site U1461 targeted a 1 km thick outer shelf to upper slope carbonate wedge that onlaps (because of basin-wide subsidence) a regional top Miocene surface (Figures F2, F3).more » « less
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International Ocean Discovery Program (IODP) Site U1459 lies in the northern part of the Perth Basin, about 1 nmi seaward of Site U1458 and the Houtman-1 industry well on the northern Rottnest shelf (James et al., 1999; Collins et al., 2014). Site U1459 was originally intended as an alternate to IODP Site U1458. The ship moved to Site U1459 after having difficulty coring the uppermost sediments at Site U1458. Like U1458, Site U1459 is directly seaward of and downdip from the Houtman Abrolhos main reef complex, which contains the most southerly tropical reefs in the Indian Ocean. Sites U1458 and U1459 represent the southernmost sites of our latitudinal transect (Figures F1, F2, F3).more » « less
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