Thomas, Deborah J; Tilghman, David S (2014): (Table 2) Neodymium isotopic analysis from different ODP Holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.839734
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Abstract:
Oceanic Anoxic Event (OAE) 2 coincided with the Cenomanian-Turonian boundary ~93.9 Ma, and was one of the two most prominent and globally significant of the major mid-Cretaceous OAEs. A confluence of global warming, major large igneous province volcanism, and intensified hydrologic cycling preconditioned the earth system for widespread preservation of organic matter during OAE2; however the ultimate necessary ingredient was enhanced nutrient availability in oceanic surface waters. Here we present new Cenomanian-Turonian interval seawater Neodymium isotope data from the proto-Indian Ocean that demonstrates increased water column stratification during the pre- and post-OAE2 interval, punctuated by a transient decrease in this stratification immediately prior to the onset of OAE2 recorded at Ocean Drilling Program Site 763. The direct oceanographic responses to climate change on both longer- and short-term time scales observed in this region are distinct from those recorded in the northern, tropical and southern Atlantic basins. The transient de-stratification of the water column in the eastern proto-Indian Ocean likely did not contribute to the accumulation of organic-rich sediments in the region, indicating that weathering and/or hydrothermal inputs promoted enhanced surface water nutrient levels and hence primary productivity.
Related to:
Thomas, Deborah J; Tilghman, David S (2014): Geographically different oceanographic responses to global warming during the Cenomanian–Turonian interval and Oceanic Anoxic Event 2. Palaeogeography, Palaeoclimatology, Palaeoecology, 411, 136-143, https://doi.org/10.1016/j.palaeo.2014.06.014
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -26.126750 * Median Longitude: 105.684276 * South-bound Latitude: -53.551750 * West-bound Longitude: 75.974880 * North-bound Latitude: -15.976000 * East-bound Longitude: 117.575200
Date/Time Start: 1988-08-06T07:30:00 * Date/Time End: 1999-01-31T06:15:00
Minimum DEPTH, sediment/rock: 129.56 m * Maximum DEPTH, sediment/rock: 689.75 m
Event(s):
122-763B * Latitude: -20.587000 * Longitude: 112.208700 * Date/Time Start: 1988-08-06T07:30:00 * Date/Time End: 1988-08-11T21:00:00 * Elevation: -1379.0 m * Penetration: 653.5 m * Recovery: 376.36 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg122 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 54 cores; 653.5 m cored; 0 m drilled; 57.6 % recovery
122-763C * Latitude: -20.587000 * Longitude: 112.208500 * Date/Time Start: 1988-08-11T21:00:00 * Date/Time End: 1988-08-17T12:00:00 * Elevation: -1379.0 m * Penetration: 1036.6 m * Recovery: 332.83 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg122 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 46 cores; 1036.6 m cored; 0 m drilled; 32.1 % recovery
123-765C * Latitude: -15.976000 * Longitude: 117.575200 * Date/Time Start: 1988-09-11T04:25:00 * Date/Time End: 1988-09-22T10:30:00 * Elevation: -5728.0 m * Penetration: 963.9 m * Recovery: 373.35 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg123 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 65 cores; 613.7 m cored; 0 m drilled; 60.8 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Sample code/label | Sample label | Thomas, Deborah J | |||
| 5 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 6 | AGE | Age | ka BP | Geocode | ||
| 7 | Neodymium-143/Neodymium-144 ratio | 143Nd/144Nd | Thomas, Deborah J | |||
| 8 | Neodymium-143/Neodymium-144 ratio, error | 143Nd/144Nd e | ± | Thomas, Deborah J | ||
| 9 | ε-Neodymium (T) | ε-Nd(T) | Thomas, Deborah J | 2 sigma | ||
| 10 | Comment | Comment | Thomas, Deborah J |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
280 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Sample label | 5 Depth sed [m] | 6 Age [ka BP] | 7 143Nd/144Nd | 8 143Nd/144Nd e [±] | 9 ε-Nd(T) | 10 Comment |
|---|---|---|---|---|---|---|---|---|---|
| 122-763B | -20.5870 | 112.2087 | 122-763B-19X-3,61-62 | 355.10 | 89280 | 0.512197 | 0.000005 | -7.7 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-19X-6,61-63 | 359.62 | 89990 | 0.512181 | 0.000004 | -8.0 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-20X-1,33.5-34.5 | 361.34 | 90260 | 0.512204 | 0.000004 | -7.5 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-20X-2,95-96 | 363.46 | 90590 | 0.512204 | 0.000006 | -7.5 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-21X-1,8-9 | 370.59 | 91700 | 0.512109 | 0.000005 | -9.4 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-21X-1,118.5-119.5 | 371.69 | 91880 | 0.512145 | 0.000004 | -8.7 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-21X-2,69-70 | 372.70 | 92030 | 0.512100 | 0.000005 | -9.5 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-22X-1,85.5-86.5 | 380.86 | 93310 | 0.512032 | 0.000041 | -10.9 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-22X-2,18-19 | 381.69 | 93440 | 0.512039 | 0.000005 | -10.7 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-23X-1,43-44 | 389.94 | 94540 | 0.512052 | 0.000004 | -10.5 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-23X-2,33-34 | 391.34 | 94720 | 0.512055 | 0.000004 | -10.4 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-23X-4,55-56 | 394.56 | 95130 | 0.512032 | 0.000007 | -10.8 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-23X-5,41.5-42.5 | 395.92 | 95310 | 0.512053 | 0.000005 | -10.4 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-24X-7,30.5-31.5 | 408.31 | 96900 | 0.512056 | 0.000005 | -10.3 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-25X-1,45-46 | 408.96 | 96980 | 0.512070 | 0.000002 | -10.1 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-25X-3,50.5-51.5 | 412.01 | 97370 | 0.512067 | 0.000005 | -10.1 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-26X-3,81-82 | 421.81 | 98630 | 0.512090 | 0.000007 | -9.7 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-27X-4,85-86 | 432.85 | 100040 | 0.512109 | 0.000006 | -9.3 | |
| 122-763B | -20.5870 | 112.2087 | 122-763B-28X-4,82-84 | 442.35 | 101260 | 0.512086 | 0.000009 | -9.7 | |
| 122-763C | -20.5870 | 112.2085 | 122-763C-2R-1,12.5-13.5 | 385.13 | 93830 | 0.512111 | 0.000006 | -9.3 | |
| 122-763C | -20.5870 | 112.2085 | 122-763C-2R-1,81-82 | 385.81 | 93910 | 0.512111 | 0.000008 | -9.5 | fish debris |
| 122-763C | -20.5870 | 112.2085 | 122-763C-2R-1,110-111 | 386.10 | 93950 | 0.512113 | 0.000004 | -9.4 | fish debris |
| 122-763C | -20.5870 | 112.2085 | 122-763C-2R-1,110-111 | 386.10 | 93950 | 0.512085 | 0.000006 | -9.8 | |
| 122-763C | -20.5870 | 112.2085 | 122-763C-2R-2,47-48 | 386.97 | 94060 | 0.512146 | 0.000006 | -8.8 | fish debris |
| 122-763C | -20.5870 | 112.2085 | 122-763C-2R-2,47-48 | 386.97 | 94060 | 0.512116 | 0.000006 | -9.2 | |
| 122-763C | -20.5870 | 112.2085 | 122-763C-2R-3,47-48 | 388.47 | 94250 | 0.512103 | 0.000012 | -9.6 | fish debris |
| 122-763C | -20.5870 | 112.2085 | 122-763C-2R-3,47-48 | 388.47 | 94250 | 0.512079 | 0.000008 | -9.9 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-25R-3,61-62 | 582.60 | 90010 | 0.512249 | 0.000002 | -6.7 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-25R-5,49.5-50.5 | 585.53 | 91960 | 0.512220 | 0.000007 | -7.2 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-1,4-5 | 588.34 | 93830 | 0.512226 | 0.000011 | -7.1 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-1,34-35 | 588.64 | 94030 | 0.512242 | 0.000008 | -6.7 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-1,57-58 | 588.87 | 94190 | 0.512262 | 0.000013 | -6.3 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-1,84-85 | 589.13 | 94730 | 0.512210 | 0.000008 | -7.4 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-1,136-137 | 589.65 | 95480 | 0.512249 | 0.000020 | -6.6 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-2,7.5-8.5 | 589.83 | 95730 | 0.512244 | 0.000007 | -6.7 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-2,24-25 | 589.98 | 95950 | 0.512190 | 0.000005 | -7.7 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-2,55.5-56.5 | 590.30 | 96400 | 0.512193 | 0.000005 | -7.7 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-2,64-65 | 590.40 | 96550 | 0.512193 | 0.000005 | -7.7 | |
| 123-765C | -15.9760 | 117.5752 | 123-765C-26R-4,28-29 | 592.93 | 100160 | 0.512152 | 0.000006 | -8.4 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-14R-4,146.5-147.5 | 129.56 | 91420 | 0.512214 | 0.000003 | -7.3 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-14R-5,70.5-71.5 | 130.30 | 91760 | 0.512242 | 0.000004 | -6.8 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-1,8-9 | 133.26 | 93110 | 0.512314 | 0.000008 | -5.3 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-1,115-116 | 134.35 | 93550 | 0.512251 | 0.000015 | -6.6 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-2,55-56 | 135.26 | 94630 | 0.512258 | 0.000021 | -6.4 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-2,94-95 | 135.64 | 95090 | 0.512181 | 0.000034 | -7.9 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-3,12-13 | 136.32 | 95890 | 0.512152 | 0.000006 | -8.5 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-329-30 | 136.49 | 96100 | 0.512251 | 0.000004 | -6.5 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-3,38.5-39.5 | 136.58 | 96200 | 0.512202 | 0.000007 | -7.5 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-3,46.5-47.5 | 136.68 | 96320 | 0.512195 | 0.000006 | -7.6 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-3,99-100 | 137.20 | 96940 | 0.512172 | 0.000007 | -8.1 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-4,69-70 | 138.38 | 98350 | 0.512161 | 0.000031 | -8.3 | |
| 123-766A | -19.9320 | 110.4541 | 123-766A-15R-5,100-101 | 140.20 | 100120 | 0.512149 | 0.000005 | -8.5 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-67R-2,5-6 | 632.17 | 86400 | 0.512248 | 0.000006 | -6.7 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-67R-2,75-76 | 632.87 | 92990 | 0.512313 | 0.000005 | -5.4 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-68R-1,6-7 | 640.47 | 93310 | 0.512239 | 0.000005 | -6.8 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-68R-1,42.5-43.5 | 640.83 | 93330 | 0.512247 | 0.000006 | -6.6 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-68R-2,36-37 | 643.62 | 93440 | 0.512218 | 0.000004 | -7.2 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-68R-3,21-22 | 644.88 | 93500 | 0.512495 | 0.000011 | -1.8 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-68R-4,25.5-26.5 | 645.82 | 93530 | 0.512206 | 0.000006 | -7.5 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-69R-2,52.5-53.5 | 651.95 | 93710 | 0.512176 | 0.000004 | -8.0 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-69R-3,23.5-24.5 | 652.83 | 93730 | 0.512203 | 0.000007 | -7.5 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-69R-5,60-61 | 656.18 | 93830 | 0.512156 | 0.000005 | -8.4 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-69R-6,52-53 | 657.60 | 93870 | 0.512326 | 0.000016 | -5.1 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-70R-1,17.5-18.5 | 659.78 | 93940 | 0.512453 | 0.000011 | -2.6 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-70R-1,130-131 | 660.95 | 93970 | 0.512452 | 0.000009 | -2.6 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-70R-2,56-57 | 661.67 | 93990 | 0.512472 | 0.000007 | -2.3 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-71R-2,60-62 | 671.10 | 94270 | 0.512522 | 0.000006 | -1.3 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-72R-2,20-21 | 680.60 | 94540 | 0.512633 | 0.000008 | 0.9 | |
| 183-1138A | -53.5517 | 75.9749 | 183-1138A-73R-2,46-47 | 689.75 | 94810 | 0.512616 | 0.000010 | 0.6 |