The enigma of rare Quaternary oolites in the Indian and Pacific Oceans; a result of global oceanographic physicochemical conditions or a sampling bias?

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doi: 10.1016/j.quascirev.2018.09.028
Author(s): Gallagher, Stephen John; Reuning, Lars; Himmler, Tobias; Henderiks, Jorijntje; De Vleeschouwer, David; Groeneveld, Jeroen; Rastegar Lari, Alireza; Fulthorpe, Craig S.; Bogus, Kara A.; Renema, Willem; McGregor, Helen V.; Kominz, Michelle; Auer, Gerald; Baranwal, Soma; Castaneda, S.; Christensen, Beth A.; Franco, Daniel; Gurnis, Michael; Haller, Christian; He Yuxin; Ishiwa, Takeshige; Iwatani, Hokuto; Jatiningrum, Resti Samyati; Korpanty, Chelsea A.; Lee, Eun Young; Levin, Emily; Mamo, Briony L.; McHugh, Cecilia; Petrick, Benjamin; Potts, Donald C.; Takayanagi, Hideko; Zhang Wenfang
International Ocean Discovery Program, Expedition 356 Scientists
Author Affiliation(s): Primary:
University of Melbourne, School of Earth Sciences, Mebourne, Victoria, Australia
RWTH Aachen University, Germany
Geological Survey of Norway, Norway
Uppsala University, Sweden
University of Bremen, Germany
University of Western Australia, Australia
University of Texas-Austin, United States
University of Exeter, United Kingdom
Naturalis Biodiversity Center, Netherlands
University of Wollongong, Australia
Western Michigan University, United States
Japan Agency for Marine-Earth Science and Technology, Japan
University of Tromso, Norway
University of Massachusetts, United States
Adelphi University, United States
National Observatory, Brazil
California Institute of Technology, United States
University of South Florida, United States
Zhejiang University, China
University of Tokyo, Japan
University of Hong Kong, China
Akita University, Japan
University of Queensland, Australia
Chonnam National University, South Korea
University of California, Davis, United States
CUNY Queens College, United States
University of Newcastle Upon Tyne, United Kingdom
University of California, Santa Cruz, United States
Tohoku University, Japan
Nanjing University, China
Volume Title: Quaternary Science Reviews
Source: Quaternary Science Reviews, Vol.200, p.114-122. Publisher: Elsevier, International. ISSN: 0277-3791
Note: In English. 63 refs.; illus., incl. sects., 2 tables, geol. sketch map
Summary: Marine ooids are iconic indicators of shallow seawater carbonate saturation state, and their formation has traditionally been ascribed to physicochemical processes. The Indo-Pacific stands out as a region devoid of oolites, particularly during the Quaternary: the "ooid enigma". Here we present results from recent coring by the International Ocean Discovery Program (IODP Expedition 356) off west Australia that shows that ooid horizons are common in Pleistocene strata up to 730,000 years old. Extensive "ooid factories" were created due to the presence of long-lived tidally influenced flat-topped tropical platforms suitable for intermittent ooid accretion over hundreds to thousands of years during highstands and times of lower sea level. This work suggests marine ooids may actually be more common in Indo-Pacific than previously reported. Past global ocean alkalinity was elevated during Pleistocene glacial periods and continental climate was generally more arid in the Indo-Pacific region compared to interglacials and the Holocene. Therefore, increased aridity associated with higher alkalinity conditions during the glacials facilitated ooid precipitation on adjacent tropical carbonate platforms particularly offshore from arid Australia. This confluence of factors suggests that more "ooid factories" may be encountered by further coring Indo-Pacific regions with Pleistocene flat long-lived carbonate shelves. However, Indo-Pacific Quaternary ooid occurrences outside Australia are rare, suggesting that the Northwest Shelf may be a unique archive of this non-skeletal precipitate. Further investigations into the petrography and geochemistry of pre-Holocene ooid occurrences will provide insights into their origin and the relative role of biotic, physicochemical and other factors in their formation.
Year of Publication: 2018
Research Program: IODP Integrated Ocean Drilling Program
IODP2 International Ocean Discovery Program
Key Words: 24 Surficial Geology, Quaternary Geology; Biostratigraphy; Carbonate sediments; Cenozoic; Cores; East Indian Ocean; Expedition 356; Geophysical methods; Geophysical profiles; Geophysical surveys; IODP Site U1462; Indian Ocean; International Ocean Discovery Program; Marine sediments; Microfossils; Nannofossils; North West Shelf; Oolite; Quaternary; Sediments; Seismic methods; Seismic profiles; Seismic stratigraphy; Surveys; Upper Quaternary
Coordinates: S194917 S194917 E1154237 E1154237
Record ID: 2020006251
Copyright Information: GeoRef, Copyright 2020 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands