Bourlès, Didier L; Raisbeck, Grant M (1988): Al and Be isotope composition of two ferromanganese crusts from the Pacific Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.874277, Supplement to: Bourlès, Didier L (1988): Etude de la géochimie de l'isotope cosmogénique 10Be et de son isotope stable 9Be en milieu océanique. Application à la datation des sédiments marins = Study of the geochemistry of the cosmogenic isotope 10Be and the stable isotope 9Be in oceanic environment. Application to marine sediment dating. Ph. D. Dissertation, Université de Paris-Sud, Centre d'Orsay, France. https://inis.iaea.org/search/search.aspx?orig_q=RN:23046328; supplement to Raisbeck G. M., Yiou F., Klein J., Middleton R., Sharma P. and Somayajulu B. L. K. (private communication), 227 pp (pdf 3.3 MB), Bourles_1988.pdf
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Abstract:
The technique of accelerator mass spectrometry (A.H.S.) has opened up a number of new potential geochronological applications of long lived cosmogenic nuclei- However the absence of any obvious stage leading to equilibrium between the radioactive and corresponding stable isotope(s) in the geochemical cycle of many of these species, complicates considerably their potential dating applications. The radioisotope 10Be (half-life 1.5 My) is formed by spallation reactions between cosmic rays and 14N, 16O in the atmosphere. It is transferred to the oceans in soluble form by precipitation and dry deposition. The 10Be et 16Al having similar chemical behaviours and being influenced by the same geophysical and geochemical phenomena before being incorporated into the marine sediments, their ratio is tested in order to date those sediments. This approach is also applied to manganese nodules and ferromanganese crusts.
Source:
Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:
Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):
Coverage:
Median Latitude: 20.759500 * Median Longitude: 173.390000 * South-bound Latitude: 20.752000 * West-bound Longitude: 173.340000 * North-bound Latitude: 20.767000 * East-bound Longitude: 173.440000
Date/Time Start: 1971-05-17T00:00:00 * Date/Time End: 1971-05-18T00:00:00
Minimum Elevation: -1834.0 m * Maximum Elevation: -1285.0 m
Event(s):
ARIES-012D * Latitude: 20.752000 * Longitude: 173.440000 * Date/Time: 1971-05-17T00:00:00 * Elevation: -1834.0 m * Location: Pacific Ocean * Campaign: ARIES * Basis: Thomas Washington * Method/Device: Dredge (DRG)
ARIES-015D * Latitude: 20.767000 * Longitude: 173.340000 * Date/Time: 1971-05-18T00:00:00 * Elevation: -1285.0 m * Location: Pacific Ocean * Campaign: ARIES * Basis: Thomas Washington * Method/Device: Dredge (DRG)
Comment:
From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Raisbeck, Grant M | |||
| 2 | Identification | ID | Raisbeck, Grant M | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Raisbeck, Grant M | Geocode | |
| 4 | DISTANCE | Distance | cm | Raisbeck, Grant M | Geocode | |
| 5 | Distance, minimum | Dist min | mm | Raisbeck, Grant M | ||
| 6 | Distance, maximum | Dist max | mm | Raisbeck, Grant M | ||
| 7 | Aluminium-27 | 27Al | mg/kg | Raisbeck, Grant M | Accelerator mass spectrometry (AMS) | |
| 8 | Aluminium-26 | 26Al | 106 atoms/g | Raisbeck, Grant M | Accelerator mass spectrometry (AMS) | |
| 9 | Aluminium-26, standard deviation | 26Al std dev | ± | Raisbeck, Grant M | ||
| 10 | Beryllium-10 | 10Be | 109 atoms/g | Raisbeck, Grant M | Accelerator mass spectrometry (AMS) | |
| 11 | Beryllium-10, standard deviation | 10Be std dev | ± | Raisbeck, Grant M | ||
| 12 | Deposit type | Deposit type | Raisbeck, Grant M | |||
| 13 | Description | Description | Raisbeck, Grant M |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
20 data points
Data
| 1 Event | 2 ID | 3 Depth sed [m] | 4 Distance [cm] | 5 Dist min [mm] | 6 Dist max [mm] | 7 27Al [mg/kg] | 8 26Al [106 atoms/g] | 9 26Al std dev [±] | 10 10Be [109 atoms/g] | 11 10Be std dev [±] | 12 Deposit type | 13 Description |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ARIES-015D | ARIES-015D-1R | 0 | 0.19 | 0 | 3.8 | 2550 | 3.6 | 1100 | 23.5 | 190 | Mn crust | Outside surface |
| ARIES-012D | ARIES-012D-1R | 0 | 0.23 | 0 | 4.7 | 3710 | 5.6 | 2200 | 18.5 | 210 | Mn crust | Outside surface |