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Sharp, Warren D; Clague, David A (2006): Age determination and Argon geochemistry of Hawaiian Emperor seamounts [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.772234, Supplement to: Sharp, WD; Clague, DA (2006): 50-Ma initiation of Hawaiian-Emperor bend records major change in Pacific Plate motion. Science, 313(5791), 1281-1284, https://doi.org/10.1126/science.1128489

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Published: 2006 (exact date unknown) • DOI registered: 2012-01-03

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Abstract:
The Hawaiian-Emperor bend has played a prominent yet controversial role in deciphering past Pacific plate motions and the tempo of plate motion change. New ages for volcanoes of the central and southern Emperor chain define large changes in volcanic migration rate with little associated change in the chain's trend, which suggests that the bend did not form by slowing of the Hawaiian hot spot. Initiation of the bend near Kimmei seamount about 50 million years ago (MA) was coincident with realignment of Pacific spreading centers and early magmatism in western Pacific arcs, consistent with formation of the bend by changed Pacific plate motion.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 37.540512 * Median Longitude: 170.400862 * South-bound Latitude: 30.300000 * West-bound Longitude: 147.300000 * North-bound Latitude: 49.000000 * East-bound Longitude: -178.000000
Date/Time Start: 1977-08-01T00:00:00 * Date/Time End: 1977-08-16T00:00:00
Event(s):
55-430A * Latitude: 37.988200 * Longitude: 170.597700 * Date/Time: 1977-08-01T00:00:00 * Elevation: -1479.0 m * Penetration: 118 m * Recovery: 18.3 m * Location: North Pacific/SEDIMENT POND * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 59 m cored; 28.5 m drilled; 31.1 % recovery
55-432A * Latitude: 41.333800 * Longitude: 170.379000 * Date/Time: 1977-08-06T00:00:00 * Elevation: -1310.0 m * Penetration: 74 m * Recovery: 16.1 m * Location: North Pacific/TERRACE * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 5 cores; 38 m cored; 0 m drilled; 42.4 % recovery
55-433A * Latitude: 44.776700 * Longitude: 170.021000 * Date/Time: 1977-08-16T00:00:00 * Elevation: -1862.0 m * Penetration: 174 m * Recovery: 88.6 m * Location: North Pacific/SEAMOUNT * Campaign: Leg55 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 cores; 174 m cored; 0 m drilled; 50.9 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Sharp, WD; Clague, DA (2006): (Table S3) Argon geochemistry of plagioclase from DSDP Site 55-433. https://doi.org/10.1594/PANGAEA.772232
  2. Sharp, WD; Clague, DA (2006): (Table S2) Age determinations of Hawaiian-Emperor seamounts. https://doi.org/10.1594/PANGAEA.772230
  3. Sharp, WD; Clague, DA (2006): (Table S3) Argon geochemistry of minerals from Hawaiian-Emperor seamounts. https://doi.org/10.1594/PANGAEA.772233