Lavelle, Mark (2001): (Table 1) Strontium isotope data for marine carbonates of sediment core CRP-3 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.184981, Supplement to: Lavelle, M (2001): Strontium isotope stratigraphy for CRP-3, Victoria Land Basin, Antarctica. Terra Antartica, 8(4), 593-598, hdl:10013/epic.28217.d001
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Abstract:
Strontium isotope stratigraphy was used to date 5 discrete horizons within the CRP-3 drillhole. A single in situ modiolid bivalve fragment at 10.88 mbsf gives an age of 30.9 (±0.8) Ma for the associated sediment. The four remaining well preserved fragments recovered from 29.94-190.31 mbsf are within error of this age, indicating a high sedimentation rate and suggesting little time is missing in disconformities. The diagenetic alteration of carbonate macrofossils by continental fluids (and possibly seawater) is a common feature to 320 mbsf.
Project(s):
Cape Roberts Project (CRP)
Coverage:
Latitude: -77.006000 * Longitude: 163.719000
Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00
Minimum Elevation: -295.0 m * Maximum Elevation: -295.0 m
Event(s):
CRP-3 * Latitude: -77.006000 * Longitude: 163.719000 * Date/Time Start: 1999-10-09T00:00:00 * Date/Time End: 1999-11-19T00:00:00 * Elevation: -295.0 m * Penetration: 939 m * Recovery: 936 m * Location: Ross Sea * Campaign: CRP-3 * Basis: Sampling/drilling from ice * Method/Device: Core wireline system (CWS) * Comment: 11.76 km at 76° true from Cape Roberts, 2.04 km at 225° true from CRP-2. Fast ice thickness: 2.0 to 2.2 m. Sea rise embedded to 9.55 mbsf. Lateral ice movement from spudding 5.0 m to 82° true. HQ core to 345.85 mbsf. NQ core to 939.42 mbsf. Core recovery 97%. Phase 1 logging to 345 mbsf, Phase 2 logging to 773 mbsf, Phase 3 logging to 918 mbsf. Deepest Cenozoic lithology and depth: sandstone breccia from 822.87 to 823.11 mbsf. Age of oldest Cenozoic strata: earliest Oligocene or latest Eocene. Deepest core lithology and depth: light red-brown quartz-cemented quartz sandstone to 939.42 mbsf. Age of bedrock: (mid?) Devonian.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Depth, top/min | Depth top | m | Lavelle, Mark | ||
| 2 | Depth, bottom/max | Depth bot | m | Lavelle, Mark | ||
| 3 | Lithologic unit/sequence | Unit | Lavelle, Mark | |||
| 4 | Sample type | Samp type | Lavelle, Mark | |||
| 5 | Shell debris | Shells | Lavelle, Mark | Shell type | ||
| 6 | Preservation | Preserv | Lavelle, Mark | |||
| 7 | Comment | Comment | Lavelle, Mark | Taphonomy | ||
| 8 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Lavelle, Mark | Isotope ratio mass spectrometry | Normalised to long-term laboratory standard NIST-987 = 0.7210248 | |
| 9 | Strontium-87/Strontium-86 ratio, error | 87Sr/86Sr e | ± | Lavelle, Mark | 2SE | |
| 10 | Age, dated | Age dated | ka | Lavelle, Mark | Age, strontium isotope, LOWESS fit Howarth & McArthur (1997) | |
| 11 | Age, dated, range, minimum | Age dated min | ka | Lavelle, Mark | Age, strontium isotope, LOWESS fit Howarth & McArthur (1997) | |
| 12 | Age, dated, range, maximum | Age dated max | ka | Lavelle, Mark | Age, strontium isotope, LOWESS fit Howarth & McArthur (1997) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
150 data points