Lyu, Jing; Bialik, Or M; Batenburg, Sietske J; Christensen, Beth A; Auer, Gerald; De Vleeschouwer, David: Neodymium isotope record from ODP Hole 121-752A at Broken Ridge [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.970159 (dataset in review)
Abstract:
Water flowing from the Pacific Ocean into the Indian Ocean plays a vital role in regulating global thermohaline circulation. Both water basins are connected north of Australia through the Indonesian Throughflow (ITF) and south of Australia through Tasman Leakage (TL). The onset of Tasman Leakage was suggested in the Late Miocene, yet its dynamics on astronomical timescales remain unknown. Here, we present new neodymium (Nd) isotope data from ODP Site 752 (Broken Ridge, Indian Ocean) to trace TL since the Middle Miocene. Both Nd isotope and related stable carbon isotope can be used to distinguish the water masses/ocean circulation. These results therefore, reveal the dynamic of TL since the Middle Miocene.
Supplement to:
Lyu, Jing (in review): Early Initiation of Tasman Leakage and the formation of the modern Indian Ocean circulation.
Related to:
Lyu, Jing; Barragán-Montilla, Sofía; Bialik, Or M; Christensen, Beth A; Auer, Gerald; Sarr, Anta-Clarisse; De Vleeschouwer, David (2024): Early Initiation of Tasman Leakage and the formation of modern Indian Ocean circulation. EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-7569, https://doi.org/10.5194/egusphere-egu24-7569
Lyu, Jing; Bialik, Or M; Batenburg, Sietske J; Christensen, Beth A; Auer, Gerald; De Vleeschouwer, David: Stable carbon and oxygen isotope records from ODP Hole 121-752A at Broken Ridge [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.970158
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: 7.06 m * Maximum DEPTH, sediment/rock: 54.40 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 | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Lyu, Jing | Geocode – CSF-A | |
| 3 | AGE | Age | ka BP | Lyu, Jing | Geocode | |
| 4 | Neodymium-143/Neodymium-144 ratio | 143Nd/144Nd | Lyu, Jing | |||
| 5 | Neodymium-143/Neodymium-144 ratio, standard deviation | 143Nd/144Nd std dev | ± | Lyu, Jing | 2 SD | |
| 6 | ε-Neodymium (T) | ε-Nd(T) | Lyu, Jing | |||
| 7 | ε-Neodymium (T), standard deviation | ε-Nd(T) std dev | ± | Lyu, Jing | 2 SD |
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:
65 data points