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Brooks, Kent; Tegner, Christian (2001): Geochemistry, mineral composition and Ar40/Ar39 ages of dolerites from ODP Leg 180 sites [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.786805, Supplement to: Brooks, K; Tegner, C (2001): Affinity of the Leg 180 dolerites of the Woodlark Basin: geochemistry and age. In: Huchon, P; Taylor, B; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 180, 1-18, https://doi.org/10.2973/odp.proc.sr.180.155.2001

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Abstract:
New trace element analyses are presented for Leg 180 dolerites, basalts from the Papuan Ultramafic Belt (PUB), and basement rocks of Woodlark Island. The Leg 180 dolerites are similar to those from Woodlark Island in being derived from an enriched source but differ from the PUB, which came from a source similar to normal mid-ocean ridge basalts. A reliable 40Ar/39Ar age of 54.0 ± 1.0 Ma has been obtained by step heating of a whole-rock sample from Site 1109, and a similar but less reliable age was obtained for a sample from Site 1118. Plagioclase from Site 1109 did not give a meaningful age. This age is broadly similar to ages from the Dabi volcanics of the nearby Cape Vogel and for the PUB.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -9.478211 * Median Longitude: 151.758314 * South-bound Latitude: -9.585160 * West-bound Longitude: 151.572580 * North-bound Latitude: -9.111600 * East-bound Longitude: 152.763600
Date/Time Start: 1998-06-27T08:00:00 * Date/Time End: 1998-08-05T04:30:00
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. Brooks, K; Tegner, C (2001): (Table T3) Ar40/Ar39 incremental heating ages of ODP Leg 180 dolerites. https://doi.org/10.1594/PANGAEA.786804
  2. Brooks, K; Tegner, C (2001): (Table T1) Geochemical composition of dolerites from ODP Leg 180 sites and samples from Woodlark Island. https://doi.org/10.1594/PANGAEA.786802
  3. Brooks, K; Tegner, C (2001): (Table T2) Major element oxides and mineral composition of dolerites from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786803