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Iryu, Yasufumi; Takahashi, Yasunari; Fujita, Kazuhiko; Camoin, Gilbert; Cabioch, Guy; Matsuda, Hiroki; Sato, Tokiyuki; Sugihara, Kaoru; Webster, Jody M; Westphal, Hildegard (2012): Nongeniculate coralline algae from IODP Site 310-M0005D. PANGAEA, https://doi.org/10.1594/PANGAEA.788464

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Abstract:
Material cored during the Integrated Ocean Drilling Program (IODP) Expedition 310 'Tahiti Sea Level' revealed that the fossil reef systems around Tahiti are composed of two major stratigraphic sequences: (i) a last deglacial sequence; and (ii) an older Pleistocene sequence. The older Pleistocene carbonate sequence is composed of reef deposits associated with volcaniclastic sediments and was preserved in Hole 310-M0005D drilled off Maraa. Within an approximately 70-m-thick older Pleistocene sequence (33.22-101.93 m below seafloor; 92.85-161.56 m below present sealevel) in this hole, 11 depositional units are defined by lithological changes, sedimentological features, and paleontological characteristics and are numbered sequentially from the top of the hole downward (Subunits P1-P11). Paleowater depths inferred from nongeniculate coralline algae, combined with those determined by using corals and larger foraminifers, suggest two major sealevel rises during the deposition of the older Pleistocene sequence. Of these, the second sealevel rise is associated with an intervening sealevel drop. It is likely that the second sealevel rise corresponds to that during Termination II (TII, the penultimate deglaciation, from Marine Isotope Stages 6 to 5e). Therefore, the intervening sealevel drop can be correlated with that known as the 'sealevel reversal' during TII. Because there are limited data on the Pleistocene reef systems in the tropical South Pacific Ocean, this study provides important information about Pleistocene sealevel history, the evolution of coral reef ecosystems, and the responses of coral reefs to Quaternary climate changes.
Related to:
Iryu, Yasufumi; Takahashi, Yasunari; Fujita, Kazuhiko; Camoin, Gilbert; Cabioch, Guy; Matsuda, Hiroki; Sato, Tokiyuki; Sugihara, Kaoru; Webster, Jody M; Westphal, Hildegard (2010): Sealevel history recorded in the Pleistocene carbonate sequence in IODP Hole 310-M0005D, off Tahiti. Island Arc, 19(4), 690-706, https://doi.org/10.1111/j.1440-1738.2010.00737.x
Coverage:
Latitude: -17.766520 * Longitude: -149.550790
Date/Time Start: 2005-10-10T22:55:00 * Date/Time End: 2005-10-12T03:33:00
Minimum DEPTH, sediment/rock: 33.255 m * Maximum DEPTH, sediment/rock: 100.960 m
Event(s):
310-M0005D (TAH-03A-4C) * Latitude: -17.766520 * Longitude: -149.550790 * Date/Time Start: 2005-10-10T22:55:00 * Date/Time End: 2005-10-12T03:33:00 * Elevation: -59.6 m * Penetration: 102.17 m * Recovery: 51.35 m * Location: Tahiti, offshore Maraa * Campaign: Exp310 (Tahiti Sea Level) * Basis: DP Hunter * Method/Device: Drilling/drill rig (DRILL) * Comment: Coordinate system: WGS84, Time zone: UTC -10
Comment:
Sediment depth is given in mbsf.+ = present;- = present (fragment)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Sample code/labelSample labelIryu, YasufumiDSDP/ODP/IODP sample designation
2DEPTH, sediment/rockDepth sedmGeocode
3Depth, top/minDepth topmIryu, Yasufumi
4Depth, bottom/maxDepth botmIryu, Yasufumi
5Sample, optional label/labor noLab noIryu, YasufumiSubunit
6Lithophyllum insipidumL. insipidumIryu, YasufumiThin section estimated
7Lithophyllum prototypumL. prototypumIryu, YasufumiThin section estimated
8Lithophyllum tamienseL. tamienseIryu, YasufumiThin section estimated
9Hydrolithon breviclaviumH. breviclaviumIryu, YasufumiThin section estimated
10Hydrolithon onkodesH. onkodesIryu, YasufumiThin section estimated
11Hydrolithon reinboldiiH. reinboldiiIryu, YasufumiThin section estimated
12Hydrolithon samoenseH. samoenseIryu, YasufumiThin section estimated
13Hydrolithon spp.Hydrolithon spp.Iryu, YasufumiThin section estimated
14Pneophyllum conicumP. conicumIryu, YasufumiThin section estimated
15Neogoniolithon megalocystumN. megalocystumIryu, YasufumiThin section estimated
16Neogoniolithon myriocarpumN. myriocarpumIryu, YasufumiThin section estimated
17Lithoporella melobesioidesL. melobesioidesIryu, YasufumiThin section estimated
18Mastophora pacificaM. pacificaIryu, YasufumiThin section estimated
19Mesophyllum erubescensM. erubescensIryu, YasufumiThin section estimated
20Mesophyllum funafutienseM. funafutienseIryu, YasufumiThin section estimated
21Sporolithon schmidtiiS. schmidtiiIryu, YasufumiThin section estimated
22Sporolithon spp.Sporolithon spp.Iryu, YasufumiThin section estimated
23RhodolithRhodolithIryu, YasufumiThin section estimated
24Peyssonneliacean algaePeyssonneliaceanIryu, YasufumiThin section estimated
25Algae assemblageAlgaeIryu, YasufumiThin section estimatedNongemculate coralline algal assemblage, see reference Fig. 2, Fig. 4 and discussion.
Size:
494 data points

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