Nongeniculate coralline algae from IODP Site 310-M0005D
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2012
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| _version_ | 1867168111062417408 |
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| author | Iryu, Yasufumi Takahashi, Yasunari Fujita, Kazuhiko Camoin, Gilbert Cabioch, Guy Matsuda, Hiroki Sato, Tokiyuki Sugihara, Kaoru Webster, Jody M Westphal, Hildegard |
| author_facet | Iryu, Yasufumi Takahashi, Yasunari Fujita, Kazuhiko Camoin, Gilbert Cabioch, Guy Matsuda, Hiroki Sato, Tokiyuki Sugihara, Kaoru Webster, Jody M Westphal, Hildegard |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_788464 |
| institution | PANGAEA |
| language | en |
| publishDate | 2012 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Nongeniculate coralline algae from IODP Site 310-M0005D Iryu, Yasufumi Takahashi, Yasunari Fujita, Kazuhiko Camoin, Gilbert Cabioch, Guy Matsuda, Hiroki Sato, Tokiyuki Sugihara, Kaoru Webster, Jody M Westphal, Hildegard 310-M0005D; Algae assemblage; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp310; Hydrolithon breviclavium; Hydrolithon onkodes; Hydrolithon reinboldii; Hydrolithon samoense; Hydrolithon spp.; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Lithophyllum insipidum; Lithophyllum prototypum; Lithophyllum tamiense; Lithoporella melobesioides; Mastophora pacifica; Mesophyllum erubescens; Mesophyllum funafutiense; Neogoniolithon megalocystum; Neogoniolithon myriocarpum; Peyssonneliacean algae; Pneophyllum conicum; Rhodolith; Sample, optional label/labor no; Sample code/label; Sporolithon schmidtii; Sporolithon spp.; TAH-03A-4C; Tahiti, offshore Maraa; Tahiti Sea Level; Thin section estimated 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. |
| title | Nongeniculate coralline algae from IODP Site 310-M0005D |
| topic | 310-M0005D; Algae assemblage; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp310; Hydrolithon breviclavium; Hydrolithon onkodes; Hydrolithon reinboldii; Hydrolithon samoense; Hydrolithon spp.; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Lithophyllum insipidum; Lithophyllum prototypum; Lithophyllum tamiense; Lithoporella melobesioides; Mastophora pacifica; Mesophyllum erubescens; Mesophyllum funafutiense; Neogoniolithon megalocystum; Neogoniolithon myriocarpum; Peyssonneliacean algae; Pneophyllum conicum; Rhodolith; Sample, optional label/labor no; Sample code/label; Sporolithon schmidtii; Sporolithon spp.; TAH-03A-4C; Tahiti, offshore Maraa; Tahiti Sea Level; Thin section estimated |
| url | https://doi.org/10.1594/PANGAEA.788464 |