Roberge, Julie; Wallace, Paul J; White, Rosalind V; Coffin, Millard F (2005): (Table 1) H2O and CO2 contents in submarine basaltic glasses from Ontong Java Plateau [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.712440
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Abstract:
The Ontong Java Plateau in the western Pacific is anomalous compared to other oceanic large igneous provinces in that it appears to have never formed a large subaerial plateau. Paleoeruption depths (at 122 Ma) estimated from dissolved H2O and CO2 in submarine basaltic glass pillow rims vary from ~1100 m below sea level (mbsl) on the central part of the plateau to 2200-3000 mbsl on the northeastern edge. Our results suggest maximum initial uplift for the plateau of 2500-3600 m above the surrounding seafloor and 1500+/-400 m of postemplacement subsidence since 122 Ma. Our estimates of uplift and subsidence for the plateau are significantly less than predictions from thermal models of oceanic lithosphere, and thus our results are inconsistent with formation of the plateau by a high-temperature mantle plume. Two controversial possibilities to explain the anomalous uplift and subsidence are that the plateau (1) formed as a result of a giant bolide impact, or (2) formed from a mantle plume but has a lower crust of dense garnet granulite and/or eclogite; neither of these possibilities is fully consistent with all available geological, geophysical, and geochemical data. The origin of the largest magmatic event on Earth in the past 200 m.y. thus remains an enigma.
Related to:
Roberge, Julie; Wallace, Paul J; White, Rosalind V; Coffin, Millard F (2005): Anomalous uplift and subsidence of the Ontong Java Plateau inferred from CO2 contents of submarine basaltic glasses. Geology, Jun 2005; 33:, 33, 501-504, https://doi.org/10.1130/G21142.1
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 0.420470 * Median Longitude: 159.750161 * South-bound Latitude: -5.011080 * West-bound Longitude: 156.625000 * North-bound Latitude: 3.607000 * East-bound Longitude: 164.232950
Date/Time Start: 1990-01-28T00:00:00 * Date/Time End: 2000-10-29T00:00:00
Minimum Elevation: -3898.9 m * Maximum Elevation: -1661.5 m
Event(s):
130-803 * Latitude: 2.433000 * Longitude: 160.540250 * Date/Time Start: 1990-01-28T00:00:00 * Date/Time End: 1990-01-29T00:00:00 * Elevation: -3410.7 m * Penetration: 1010.3 m * Recovery: 837.4 m * Location: North Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 107 cores; 991.3 m cored; 0 m drilled; 84.5% recovery
130-807 * Latitude: 3.606667 * Longitude: 156.625000 * Date/Time Start: 1990-02-26T00:00:00 * Date/Time End: 1990-03-02T00:00:00 * Elevation: -2805.2 m * Penetration: 2629.9 m * Recovery: 1249.8 m * Location: North Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 209 cores; 1849.9 m cored; 0 m drilled; 67.6% recovery
130-807A * Latitude: 3.607000 * Longitude: 156.625000 * Date/Time Start: 1990-02-26T16:08:00 * Date/Time End: 1990-03-02T21:00:00 * Elevation: -2803.8 m * Penetration: 822.9 m * Recovery: 716.74 m * Location: West equatorial Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 86 cores; 822.9 m cored; 0 m drilled; 87.1 % 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 | Water in rock | H2O | % | Roberge, Julie | Fourier transform infrared spectroscopy (FTIR) | |
| 5 | Water in rock, standard deviation | H2O std dev | ± | Roberge, Julie | Calculated | |
| 6 | Carbon dioxide | CO2 | % | Roberge, Julie | Fourier transform infrared spectroscopy (FTIR) | |
| 7 | Carbon dioxide, standard deviation | CO2 std dev | ± | Roberge, Julie | Calculated | |
| 8 | Vapour saturation pressure | VSP | kPa | Roberge, Julie | ||
| 9 | Vapour saturation pressure | VSP | kPa | Roberge, Julie | error, 2 sigma | |
| 10 | Depth, reconstructed | Reconstr depth | m | Roberge, Julie | Reconstructed | eruption depth |
| 11 | Depth, reconstructed | Reconstr depth | m | Roberge, Julie | Calculated | error of eruption depth, 2 sigma |
| 12 | Subsidence | Subs | m | Roberge, Julie | Reconstructed | |
| 13 | Subsidence | Subs | m | Roberge, Julie | Calculated | error, 2 sigma |
| 14 | Comment | Comment | Roberge, Julie |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
81 data points