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Cortesogno, Luciano; Gaggero, Laura; Gerbaudo, Stefania (2001): Petrography and geochemistry of lithic clasts in sediments obtained from ODP Leg 180 sites [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.786992, Supplement to: Cortesogno, L et al. (2001): Petrographic contributions to the investigation of volcaniclastic sediments in the western Woodlark Basin, southwest Pacific (ODP Leg 180). In: Huchon, P; Taylor, B; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 180, 1-44, https://doi.org/10.2973/odp.proc.sr.180.159.2001

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Abstract:
This report includes the petrographic description and reviews the distribution of lithic clasts in sediments drilled during Leg 180 in the Woodlark Basin (southwest Pacific). The lithic clasts include (1) metamorphic rocks; (2) granites; (3) serpentinites, gabbros, dolerites, and basalts likely derived from the Papuan ophiolite belt; (4) rare alkaline volcanites reworked in middle Miocene sediments; (5) medium- to high-K calc-alkaline island arc volcanites, in part as reworked clasts, and explosive products deposited by fallout or reworked by turbiditic currents; and (6) rare sedimentary fragments. At the footwall sites the clast assemblage evidences the association of dolerites and evolved gabbroic rocks; the serpentinite likely pertaining to the same ophiolitic complex are likely derived from onland outcrops and transported by means of turbidity currents. On the whole, extensional tectonics active at least since the middle Pliocene can be inferred.
The calc-alkaline volcanism is in continuity with the arc-related products from the Papua Peninsula and D'Entrecasteaux Islands and with the latest volcanics of the Miocene Trobrian arc. However, the medium- to high-K and shoshonitic products do not display a significant temporal evolution within the stratigraphic setting. Lava clasts, volcanogenic grains, and glass shards are associated with turbidity currents, whereas in the Pliocene of northern margin the increasing frequency of tephra (glass shards and vesicular silicic fragments) suggests more explosive activity and increasing contribution to the sediments from aerial fallout materials. Evidence of localized alkalic volcanism of presumable early to middle Miocene age is a new finding. It could represent a rift phase earlier than or coeval to the first opening of the Woodlark Basin or, less probably, could derive from depositional trajectories diverted from an adjacent basin.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -9.635215 * Median Longitude: 151.585542 * South-bound Latitude: -9.865560 * West-bound Longitude: 151.572580 * North-bound Latitude: -9.189700 * East-bound Longitude: 151.625710
Date/Time Start: 1998-06-17T15:30:00 * Date/Time End: 1998-08-05T04:30:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
13 datasets

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Datasets listed in this publication series

  1. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T3) Petrographic features of sediments from ODP Site 180-1109, northern margin of Woodlark Basin. https://doi.org/10.1594/PANGAEA.786978
  2. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T4) Petrographic features of sediments from ODP Site 180-1115, northern margin of Woodlark Basin. https://doi.org/10.1594/PANGAEA.786979
  3. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T5) Petrographic features of sediments from ODP Hole 180-1118A, northern margin of Woodlark Basin. https://doi.org/10.1594/PANGAEA.786980
  4. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T12) Geochemical composition of amphibole phenocrysts and phenoclasts from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786987
  5. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T10) Geochemical composition of clinopyroxene phenocrysts from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786985
  6. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T9) Geochemical composition of glass shards and groundmass of volcanic clasts from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786984
  7. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T11) Geochemical composition of biotite phenoclasts from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786986
  8. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T13) Geochemical composition of plagioclase microliths, phenocrysts, and phenoclasts from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786988
  9. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T6) Mineral composition of the matrix of arenitic-siltitic sediments from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786981
  10. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T7) Clay mineral composition of samples with high mud matrix from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786982
  11. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T8) Organic carbon content of selected pelite samples from ODP Leg 180 sites. https://doi.org/10.1594/PANGAEA.786991
  12. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T1) Petrographic features of sediments from footwall ODP Holes 180-1114A and 180-1116A. https://doi.org/10.1594/PANGAEA.786976
  13. Cortesogno, L; Gaggero, L; Gerbaudo, S (2001): (Table T2) Petrographic features of sediments from ODP Leg 180 rift basin sites. https://doi.org/10.1594/PANGAEA.786977