Lyu, Jing; Barragán-Montilla, Sofía; Auer, Gerald; Bialik, Or M; Sarr, Anta-Clarisse: Oxygenated bottom water conditions on Broken Ridge (central Indian Ocean) in the last 9 million years [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967492 (dataset in review)
Abstract:
The late Miocene and early Pliocene were marked by widespread oxygen depletion in the Pacific and Indian Oceans in conjunction with the so-called "Late Miocene Biogenic Bloom" (LMBB). As the oxygen depletion progressed, it was accompanied by an oxygen minimum zone (OMZ) expansion, hypothesized to extend as far south as Broken Ridge (31°S), Indian Ocean. Here, we used benthic foraminiferal (BF) assemblage from Ocean Drilling Program (ODP) Site 752 (ODP Expedition 121) to reconstruct the bottom water dissolved oxygen concentration on Broken Ridge during the last 9 million years. Taxonomic analyses on the >63μm fraction allowed the identification of 93 BF species and reported as benthic foraminifera row counts. The relative frequencies derived from BF row counts were used to determine diversity using the Fisher Alpha index and dissolved oxygen concentration was reconstructed using the Enhanced Benthic Foraminifera Oxygen Index. Benthic foraminifera with abundances below 5% across all samples were removed before statistical analysis to retain a robust signal of BF distribution without single and scattered occurrences. High abundance BF was reported in the grouped benthic foraminifera counts. Our results indicate well-oxygenated (dissolved oxygen concentration >3ml/L) bottom water conditions in the last 9 million years.
Supplement to:
Lyu, Jing; Barragán-Montilla, Sofía; Auer, Gerald; Bialik, Or M; Sarr, Anta-Clarisse; De Vleeschouwer, David (in review): Oxygenated bottom water conditions on Broken Ridge (central Indian Ocean) in the last 9 million years. Geology
Funding:
German Research Foundation (DFG), grant/award no. 446900747: Tracing Tasman Leakage since the middle Miocene
Coverage:
Latitude: -30.891000 * Longitude: 93.578000
Date/Time Start: 1988-05-10T03:15:00 * Date/Time End: 1988-05-12T13:55:00
Minimum DEPTH, sediment/rock: 0.34 m * Maximum DEPTH, sediment/rock: 32.68 m
Event(s):
121-752A * Latitude: -30.891000 * Longitude: 93.578000 * Date/Time Start: 1988-05-10T03:15:00 * Date/Time End: 1988-05-12T13:55:00 * Elevation: -1097.0 m * Penetration: 317.6 m * Recovery: 217.32 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg121 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 34 cores; 317.6 m cored; 0 m drilled; 68.4 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Lyu, Jing | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Lyu, Jing | IODP Depth Scale Terminology | Geocode – CSF-A |
| 3 | AGE | Age | ka BP | Lyu, Jing | Geocode | |
| 4 | Amphicoryna scalaris | A. scalaris | # | Lyu, Jing | Counting >63 µm fraction | |
| 5 | Anomalinoides globulosus | A. globulosus | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 6 | Anomalinoides spp. | Anomalinoides spp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 7 | Bolivina cf. viennensis | B. cf. viennensis | # | Lyu, Jing | Counting >63 µm fraction | |
| 8 | Bolivina reticulata | B. reticulata | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 9 | Bolivina spathulata | B. spathulata | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 10 | Bolivinellina translucens | B. translucens | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 11 | Bulimina striata | B. striata | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 12 | Bulimina truncana | B. truncana | # | Lyu, Jing | Counting >63 µm fraction | |
| 13 | Buliminella spp. | Buliminella spp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 14 | Cassidulina laevigata | C. laevigata | # | Lyu, Jing | Counting >63 µm fraction | |
| 15 | Cibicidoides bradyi | C. bradyi | # | Lyu, Jing | Counting >63 µm fraction | |
| 16 | Cibicidoides mundulus | C. mundulus | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 17 | Cibicidoides wuellerstorfi | C. wuellerstorfi | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 18 | Cibicidoides sp. | Cibicidoides sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 19 | Cibicidoides sp. | Cibicidoides sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1 |
| 20 | Clavulina sp. | Clavulina sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1 |
| 21 | Cushmanina plumigera | C. plumigera | # | Lyu, Jing | Counting >63 µm fraction | |
| 22 | Chrysalogonium deceptorium | C. deceptorium | # | Lyu, Jing | Counting >63 µm fraction | |
| 23 | Chrysalogonium equisetiformis | C. equisetiformis | # | Lyu, Jing | Counting >63 µm fraction | |
| 24 | Dentalina bene | D. bene | # | Lyu, Jing | Counting >63 µm fraction | |
| 25 | Eggerella bradyi | E. bradyi | # | Lyu, Jing | Counting >63 µm fraction | |
| 26 | Ehrenbergina carinata | E. carinata | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 27 | Favulina hexagona | F. hexagona | # | Lyu, Jing | Counting >63 µm fraction | |
| 28 | Favulina squamosa | F. squamosa | # | Lyu, Jing | Counting >63 µm fraction | |
| 29 | Fissurina sp. | Fissurina sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 30 | Fissurina spp. | Fissurina spp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 31 | Fursenkoina sp. | Fursenkoina sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 32 | Gavelinopsis praegeri | G. praegeri | # | Lyu, Jing | Counting >63 µm fraction | |
| 33 | Glandulina cf. ovula | G. cf. ovula | # | Lyu, Jing | Counting >63 µm fraction | |
| 34 | Glandulonodosaria ambigua | G. ambigua | # | Lyu, Jing | Counting >63 µm fraction | |
| 35 | Globocassidulina subglobosa | G. subglobosa | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 36 | Gyroidina altiformis | G. altiformis | # | Lyu, Jing | Counting >63 µm fraction | |
| 37 | Gyroidina soldanii | G. soldanii | # | Lyu, Jing | Counting >63 µm fraction | |
| 38 | Gyroidina sp. | Gyroidina sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1, grouped benthic foraminifera |
| 39 | Hanzawaia boueana | H. boueana | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 40 | Hoeglundina elegans | H. elegans | # | Lyu, Jing | Counting >63 µm fraction | |
| 41 | Karreriella bradyi | K. bradyi | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 42 | Karreriella sp. | Karreriella sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1 |
| 43 | Lagena sp. | Lagena sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 44 | Lagena hispida | L. hispida | # | Lyu, Jing | Counting >63 µm fraction | |
| 45 | Lagena nebulosa | L. nebulosa | # | Lyu, Jing | Counting >63 µm fraction | |
| 46 | Lagena striata | L. striata | # | Lyu, Jing | Counting >63 µm fraction | |
| 47 | Laticarinina pauperata | L. pauperata | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 48 | Lenticulina calcar | L. calcar | # | Lyu, Jing | Counting >63 µm fraction | |
| 49 | Lenticulina cultrata | L. cultrata | # | Lyu, Jing | Counting >63 µm fraction | |
| 50 | Lenticulina sp. | Lenticulina sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1 |
| 51 | Lobatula lobatula | L. lobatula | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 52 | Melonis affinis | M. affinis | # | Lyu, Jing | Counting >63 µm fraction | |
| 53 | Melonis sp. | Melonis sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 54 | Nodosaria spp. | Nodosaria spp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 55 | Obesopleurostomella brevis | O. brevis | # | Lyu, Jing | Counting >63 µm fraction | |
| 56 | Oridorsalis umbonatus | O. umbonatus | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 57 | Orthomorphina perversa | O. perversa | # | Lyu, Jing | Counting >63 µm fraction | |
| 58 | Orthomorphina sp. | Orthomorphina sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 59 | Osangularia culter | O. culter | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 60 | Planulina sp. | Planulina sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1 |
| 61 | Pleurostomella acuminata | P. acuminata | # | Lyu, Jing | Counting >63 µm fraction | |
| 62 | Pleurostomella sp. | Pleurostomella sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1 |
| 63 | Pullenia bulloides | P. bulloides | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 64 | Pullenia quinqueloba | P. quinqueloba | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 65 | Pyrgoella sphaera | P. sphaera | # | Lyu, Jing | Counting >63 µm fraction | |
| 66 | Quinqueloculina seminulum | Q. seminulum | # | Lyu, Jing | Counting >63 µm fraction | |
| 67 | Quinqueloculina sp. | Quinqueloculina sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 68 | Rectuvigerina cf. phlegeri | R. cf. phlegeri | # | Lyu, Jing | Counting >63 µm fraction | |
| 69 | Rectuvigerina sp. | Rectuvigerina sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 70 | Rectuvigerina striata | R. striata | # | Lyu, Jing | Counting >63 µm fraction | |
| 71 | Siphonodosaria consobrina | S. consobrina | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera as Siphonodosaroa spp. |
| 72 | Siphonodosaria hispidula | S. hispidula | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera as Siphonodosaroa spp. |
| 73 | Siphonodosaria lepidula | S. lepidula | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera as Siphonodosaroa spp. |
| 74 | Siphonodosaria pomuligera | S. pomuligera | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera as Siphonodosaroa spp. |
| 75 | Siphonodosaria sp. | Siphonodosaria sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1, grouped benthic foraminifera as Siphonodosaroa spp. |
| 76 | Siphonodosaria sp. | Siphonodosaria sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 2, grouped benthic foraminifera as Siphonodosaroa spp. |
| 77 | Siphonodosaria sp. | Siphonodosaria sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 4, grouped benthic foraminifera as Siphonodosaroa spp. |
| 78 | Siphonodosaria sp. | Siphonodosaria sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 5, grouped benthic foraminifera as Siphonodosaroa spp. |
| 79 | Siphonodosaria spp. | Siphonodosaria spp. | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera as Siphonodosaroa spp. |
| 80 | Siphonodosaria subspinosa | S. subspinosa | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera as Siphonodosaroa spp. |
| 81 | Siphouvigerina hispida | S. hispida | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 82 | Spiroloculina rotunda | S. rotunda | # | Lyu, Jing | Counting >63 µm fraction | |
| 83 | Spiroplectinella sp. | Spiroplectinella sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 84 | Spirosigmoilina tenuis | S. tenuis | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 85 | Sphaeroidina bulloides | S. bulloides | # | Lyu, Jing | Counting >63 µm fraction | |
| 86 | Strictocostella scharbergana | S. scharbergana | # | Lyu, Jing | Counting >63 µm fraction | |
| 87 | Strictocostella modesta | S. modesta | # | Lyu, Jing | Counting >63 µm fraction | |
| 88 | Strictocostella sp. | Strictocostella sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 89 | Textularia sp. | Textularia sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1, grouped benthic foraminifera |
| 90 | Trifarina angulosa | T. angulosa | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 91 | Trifarina bradyi | T. bradyi | # | Lyu, Jing | Counting >63 µm fraction | |
| 92 | Trifarina sp. | Trifarina sp. | # | Lyu, Jing | Counting >63 µm fraction | |
| 93 | Uvigerina auberiana | U. auberiana | # | Lyu, Jing | Counting >63 µm fraction | grouped benthic foraminifera |
| 94 | Uvigerina peregrina | U. peregrina | # | Lyu, Jing | Counting >63 µm fraction | |
| 95 | Uvigerina sp. | Uvigerina sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 1 |
| 96 | Uvigerina sp. | Uvigerina sp. | # | Lyu, Jing | Counting >63 µm fraction | sp. 2 |
| 97 | Rotaliidae | Rotaliide | # | Lyu, Jing | Counting >63 µm fraction | |
| 98 | Foraminifera, benthic, total | Foram benth tot | # | Lyu, Jing | Counting >63 µm fraction | total counts |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1824 data points