Neogene planktonic foraminiferal biostratigraphy of Sites 1126, 1128, 1130, 1132, and 1134, ODP Leg 182, Great Australian Bight

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doi: 10.2973/odp.proc.sr.182.005.2003
Author(s): Li, Qianyu; McGowran, Brian; Brunner, Charlotte A.
Ocean Drilling Program, Leg 182, Shipboard Scientific Party, College Station, TX
Author Affiliation(s): Primary:
University of Adelaide, Department of Geology and Geophysics, Adelaide, South. Aust., Australia
Other:
Australian Geological Survey Organisation, Australia
Texas A&M University, United States
Eidgenössische Technische Hochschule-Zentrum, Switzerland
Johann Wolfgang Goethe-Universität, Federal Republic of Germany
Eckerd College, United States
University of Southern Mississippi, United States
University of Hawaii, United States
University of New Mexico, United States
Natural History Museum, United Kingdom
Aarhus Universitet, Denmark
University of Sydney, Australia
Queen's University at Kingston, Canada
Florida State University, United States
University of Adelaide, Australia
Japan Marine Science and Technology Center, Japan
Kumamoto University, Japan
University of Texas at Dallas, United States
Université Pierre et Marie Curie, France
University of California at San Diego, United States
University of Wisconsin at Madison, United States
University of Bristol, United Kingdom
University of Leicester, United Kingdom
Kobenhavns Universitet, Denmark
University of Miami, United States
Volume Title: Proceedings of the Ocean Drilling Program; scientific results; Great Australian Bight; Cenozoic cool-water carbonates; covering Leg 182 of the cruises of the drilling vessel JOIDES Resolution; Wellington, New Zealand, to Fremantle, Australia; Sites 1126-1134, 8 October-7 December 1998
Volume Author(s): Hine, Albert C.; Feary, David A.; Malone, Mitchell J.; Andres, Miriam; Betzler, Christian; Brooks, Gregg R.; Brunner, Charlotte A.; Fuller, Michael; Molina Garza, Roberto S.; Holbourn, Ann E.; Huuse, Mads; Isern, Alexandra R.; James, Noel P.; Ladner, Bryan C.; Li, Qianyu; Machiyama, Hideaki; Mallinson, David J.; Matsuda, Hiroki; Mitterer, Richard M.; Robin, Cécile; Russell, Joellen L.; Shafik, Samir; Simo, J. A.; Smart, Peter L.; Spence, Guy H.; Surlyk, Finn C.; Swart, Peter K.; Wortmann, Ulrich G.
Source: Proceedings of the Ocean Drilling Program; scientific results; Great Australian Bight; Cenozoic cool-water carbonates; covering Leg 182 of the cruises of the drilling vessel JOIDES Resolution; Wellington, New Zealand, to Fremantle, Australia; Sites 1126-1134, 8 October-7 December 1998, Albert C. Hine, David A. Feary, Mitchell J. Malone, Miriam Andres, Christian Betzler, Gregg R. Brooks, Charlotte A. Brunner, Michael Fuller, Roberto S. Molina Garza, Ann E. Holbourn, Mads Huuse, Alexandra R. Isern, Noel P. James, Bryan C. Ladner, Qianyu Li, Hideaki Machiyama, David J. Mallinson, Hiroki Matsuda, Richard M. Mitterer, Cécile Robin, Joellen L. Russell, Samir Shafik, J. A. Simo, Peter L. Smart, Guy H. Spence, Finn C. Surlyk, Peter K. Swart and Ulrich G. Wortmann; Ocean Drilling Program, Leg 182, Shipboard Scientific Party, College Station, TX. Proceedings of the Ocean Drilling Program, Scientific Results (CD ROM), Vol.182, 67p. Publisher: Texas A&M University, Ocean Drilling Program, College Station, TX, United States. ISSN: 1096-2514
Note: In English. Available only on CD-ROM in PDF format and on the Web in PDF or HTML; includes appendix. 48 refs.CD-ROM format, ISSN 1096-2514; WWW format, ISSN 1096-7451; illus., incl. sect., 6 plates, 6 tables, sketch map
Summary: Planktonic foraminifers from Ocean Drilling Program Leg 182, Holes 1126B and 1126C, 1128B and 1128C, 1130A and 1130B, 1132B, and 1134A and 1134B confirm the neritic record that during the early Miocene the Great Australian Bight region was in a cool-temperate regime with abundant Globoturborotalita woodi. Warm marine environments started to develop in the later part of the early Miocene, and the region became warm temperate to subtropical in the early middle Miocene with abundant Globigerinoides, Orbulina, and Globorotalia, corresponding to global warming at the Miocene climatic optimum. Fluctuations between cool- and warm-temperate conditions prevailed during the late Miocene, as indicated by abundant Globoconella conoidea and Menardella spp. A major change in planktonic foraminiferal assemblages close to the Miocene/Pliocene boundary not only drove many Miocene species into extinction but also brought about such new species as Globorotalia crassaformis and Globoconella puncticulata. Warm-temperate environments continued into the early and mid-Pliocene before being replaced by cooler conditions, supporting numerous Globoconella inflata and Globigerina quinqueloba. Based on data from this study and published results from the Australia-New Zealand region, we established a local planktonic foraminifer zonation scheme for separating the southern Australian Neogene (SAN) into Zones SAN1 to SAN19 characterizing the Miocene and Zones SAN20 to SAN25 characterizing the Pliocene. The Neogene sections from the Great Australian Bight are bounded by hiatuses of ∼0.5 to >3 m.y. in duration, although poor core recovery in some holes obscured a proper biostratigraphic resolution. A total of 15 hiatuses, numbered 1 to 15, were identified as synchronous events from the base of the Miocene to the lower part of the Pleistocene. We believe that these are local manifestations of major third-order boundaries at about (1) 23.8, (2) 22.3, (3) 20.5, (4) 18.7, (5) 16.4, (6) 14.8, (7) 13.5, (8) 11.5, (9) 9.3, (10) 7.0, (11) 6.0, (12) 4.5, (13) 3.5, (14) 2.5, and (15) 1.5 Ma, respectively. This hiatus-bounded Neogene succession samples regional transgressions and stages of southern Australia and reveals its stepwise evolutionary history.
Year of Publication: 2004
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Australasia; Australia; Biostratigraphy; Cenozoic; Cores; Foraminifera; Great Australian Bight; Indian Ocean; Invertebrata; Leg 182; Microfossils; Neogene; ODP Site 1126; ODP Site 1128; ODP Site 1130; ODP Site 1132; ODP Site 1134; Ocean Drilling Program; Ocean floors; Paleo-oceanography; Paleoenvironment; Paleotemperature; Planktonic taxa; Protista; Tertiary
Coordinates: S342330 S331720 E1285500 E1271500
Record ID: 2005041663
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