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  • 1990-1994  (5)
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  • 1
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    Unknown
    PANGAEA
    In:  Supplement to: Katz, Miriam E; Miller, Kenneth G (1993): Neogene subsidence along the northeastern Australian Margin: benthic foraminiferal evidence. In: McKenzie, JA; Davies, PJ; Palmer-Julson, A; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 133, 75-92, https://doi.org/10.2973/odp.proc.sr.133.242.1993
    Publication Date: 2024-07-22
    Description: We use benthic foraminifers to reconstruct the Neogene paleobathymetric history of the Marion Plateau, Queensland Plateau, Townsville Trough, and Queensland Trough on the northeastern Australian margin (Ocean Drilling Program Leg 133). Western Queensland Plateau Site 811/825 (present depth, ~938 m) deepened from the neritic zone (0-200 m) to the upper bathyal zone (200-600 m) during the middle Miocene (~13-14 Ma), with further deepening into the middle bathyal zone (600-1000 m) occurring during the late Miocene (~7 Ma). A depth transect across the southern Queensland Plateau shows that deepening from the outer neritic zone (100-200 m) to the upper bathyal zone began during the latest Miocene (~6 Ma) at the deepest location (Site 813, present depth, 539.1 m), whereas the shallower Sites 812 and 814 (present depths, 461.6 and 520.4 m, respectively) deepened during the late Pliocene (~2.7 and ~2.9 Ma). At Marion Plateau Site 815 (present depth, 465.5 m), water depth increased during the late Miocene (~6.7 Ma) from the outer neritic to the upper bathyal zone. Nearby Site 816 (present water depth, 437.3 m) contains Pliocene upper bathyal assemblages that directly overlie middle Miocene shallow neritic deposits; the timing of the deepening is uncertain because of a late Miocene hiatus. On the northern slope of the Townsville Trough (Site 817, present depth, 1015.8 m), benthic foraminifers and sponge spicules indicate deepening from the lower upper bathyal (400-600 m) to the middle bathyal zone in the late Miocene (by ~6.8 Ma). Benthic foraminiferal faunas at nearby Site 818 (present water depth, 752.1 m) do not show evidence of paleobathymetric change; however, a late Pliocene (~2-3 Ma) increase in downslope transport may have been related to the drowning of the Queensland Plateau. Site 822 (present depth, 955.2 m), at the base of the Great Barrier Reef slope, deepened from the upper bathyal to the middle bathyal zone during the late Pliocene (by ~2.3 Ma). Queensland Trough Site 823 (present depth, 1638.4 m) deepened from the middle bathyal to the lower bathyal (1000-2000 m) zone during the late Miocene (~6.5 Ma). Benthic foraminiferal faunal changes at these Leg 133 sites indicate that rapid deepening occurred during the middle Miocene (~13-14 Ma), late Miocene (6-7 Ma), and late Pliocene (2-3 Ma) along the northeastern Australian margin.
    Keywords: 133-811A; 133-812; 133-813A; 133-814A; 133-815A; 133-816A; 133-817A; 133-818A; 133-822A; Age model; Age model, biostratigraphy; Age model, optional; Age model, paleomag, Berggren et al (1985); Ageprofile Datum Description; COMPCORE; Composite Core; Coral Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Event label; Joides Resolution; Leg133; Ocean Drilling Program; ODP
    Type: dataset
    Format: text/tab-separated-values, 318 data points
    Location Call Number Limitation Availability
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  • 2
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    Unknown
    PANGAEA
    In:  Supplement to: Katz, Miriam E; Miller, K G (1991): Early Paleogene benthic foraminiferal assemblages and stable isotopes in the Southern Ocean. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 481-512, https://doi.org/10.2973/odp.proc.sr.114.147.1991
    Publication Date: 2024-07-23
    Description: ODP Leg 114 recovered sections at four sites east of the Falkland Plateau that cover a wide range of paleodepths and provide the opportunity to evaluate the response of benthic foraminifers to late Paleocene and Eocene Oceanographic changes. Early Paleogene paleodepth estimates were obtained by "backtracking" assuming simple thermal subsidence (Site 698, -900 m; Site 702, -2000 m; Site 700, -2400 m; and Site 699, -2800 m). These estimates agree with paleodepths determined by comparing our quantitative benthic foraminiferal assemblages to previously published assemblages associated with known paleodepths. Previous studies document that a major benthic foraminiferal crisis occurred in the latest Paleocene in the Atlantic, Caribbean, and Pacific; a similar faunal turnover occurred in the latest Paleocene throughout the Atlantic sector of the Southern Ocean. At the Leg 114 sites, Stensioina beccariiformis-dominated assemblages were replaced by Nuttallides tryempyi-dominated assemblages just prior to the Paleocene/Eocene boundary. A preponderance of benthic foraminiferal taxa last appeared immediately prior to the Paleocene/Eocene boundary, as recognized at these high latitudes by the last appearance of the calcareous nannofossil F?sciculithus spp. and the first appearance of the planktonic foraminifer Pseudohastigerina spp. Recovery and biostratigraphic control at the Leg 114 sites is insufficient to constrain precisely the timing of the extinction event, although studies of material from the Maud Rise (Weddell Sea) suggest that it occurred in the latest Paleocene. The benthic foraminiferal crisis may have been caused by deep-water warming, a drop in food supply, or changing deep-water source regions. Oxygen isotope data show that there is no clear correlation between d18O changes and extinctions. Similarly, most of the extinctions occurred well after the start of the drop in global d13C values, which may, in part, reflect a decrease in productivity. Interbasinal carbon isotope comparisons suggest that the Southern Ocean was supplied "young" (high O2, low nutrient, and high d13C) deep water in the latest Paleocene (approximately 60-58 Ma) and early Eocene (approximately 57-52 Ma). Oxygen isotope evidence indicates that the Southern Ocean was filled with cooler water than that in the Pacific beginning at approximately 60 Ma, supporting our contention that the deep-water source was antarctic. However, near the Paleocene/Eocene boundary (approximately 58-57 Ma), the supply of Southern Ocean "young" deep water was reduced or eliminated. We speculate that elimination of this inferred antarctic source between 58 and 57 Ma triggered the benthic foraminiferal turnover.
    Keywords: 114-698A; 114-699A; 114-700B; 114-702; 114-702B; 11-98; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Glomar Challenger; Joides Resolution; Leg11; Leg114; North Atlantic/CHANNEL; Ocean Drilling Program; ODP; South Atlantic Ocean
    Type: dataset publication series
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2024-07-22
    Keywords: 114-698A; 114-699A; 114-700B; 114-702B; Age model; Ageprofile Datum Description; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Event label; Joides Resolution; Leg114; Ocean Drilling Program; ODP; South Atlantic Ocean
    Type: dataset
    Format: text/tab-separated-values, 62 data points
    Location Call Number Limitation Availability
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  • 4
    Publication Date: 2024-07-23
    Keywords: 114-698A; 114-699A; 114-700B; 114-702; 11-98; AGE; Cibicidoides spp., δ13C; Cibicidoides spp., δ18O; COMPCORE; Composite Core; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Joides Resolution; Leg11; Leg114; Mass spectrometer Finnigan MAT 251; North Atlantic/CHANNEL; Nuttallides truempyi, δ13C; Nuttallides truempyi, δ18O; Ocean Drilling Program; ODP; Sample code/label; South Atlantic Ocean
    Type: dataset
    Format: text/tab-separated-values, 457 data points
    Location Call Number Limitation Availability
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  • 5
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    Unknown
    Geological Society of America
    In:  In: Biostratigraphy of Jamaica. , ed. by Wright, R. M. and Robinson, E. Geological Society of America Memoir, 182 . Geological Society of America, Boulder, Colorado, USA, pp. 219-254.
    Publication Date: 2015-02-10
    Type: Book chapter , NonPeerReviewed
    Location Call Number Limitation Availability
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