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Auffret, Gérard A; Richter, Thomas; Reyss, Jean-Louis; Organo, C; Deloule, E; Gaillard, Jean-Francois; Dennielou, Bernard; Müller, C; Thomas, Bertrand; Watremez, P; Grousset, Francis E; Boelaert, An; Cambon, P; Etoubleau, Joel (1996): Geochemistry of surface sediment samples from the equatorial Atlantic south of the Azores. PANGAEA, https://doi.org/10.1594/PANGAEA.54870, Supplement to: Auffret, Gérard A; Richter, Thomas; Reyss, Jean-Louis; Organo, C; Deloule, E; Gaillard, Jean-Francois; Dennielou, Bernard; Müller, C; Thomas, Biji; Watremez, P; Grousset, Francis E; Boelaert, An; Cambon, P; Etoubleau, Joel (1996): Enregistrement de lactivité hydrothermale dans les sédiments de la dorsale médio-atlantique au Sud des Açores. Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science, 323(7), 583-590

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Abstract:
In order to recognize the distribution of hydrothermal tracers south of the Azores, a series of cores has been sampled during the GEOFAR cruise. The distribution of the Mn concentrations shows that the hydrothermal influence is maximum within and to the north-west of the Lucky Strike segment. North of the East-Azores Fracture Zone the sediments are enriched in Ba which could be derived from different sources. The chemical composition of the interstitial water shows that water advection is limited. Mn, Cu, Ni fluxes evaluated in one site have increased during isotopic stages 4 and 2 and the deglaciation.
Coverage:
Median Latitude: 37.796545 * Median Longitude: -31.443492 * South-bound Latitude: 37.040000 * West-bound Longitude: -32.570000 * North-bound Latitude: 38.665000 * East-bound Longitude: -29.050000
Date/Time Start: 1993-08-01T00:00:00 * Date/Time End: 1993-08-01T00:00:00
Minimum Elevation: -3050.0 m * Maximum Elevation: -2655.0 m
Event(s):
KB04  * Latitude: 37.860000 * Longitude: -32.570000 * Date/Time: 1993-08-01T00:00:00 * Location: south of Azores * Campaign: GEOFAR * Basis: Le Noroit * Method/Device: Piston corer (PC)
KF01  * Latitude: 37.680000 * Longitude: -32.430000 * Date/Time: 1993-08-01T00:00:00 * Location: south of Azores * Campaign: GEOFAR * Basis: Le Noroit * Method/Device: Piston corer (PC)
KF03  * Latitude: 38.000000 * Longitude: -32.240000 * Date/Time: 1993-08-01T00:00:00 * Location: south of Azores * Campaign: GEOFAR * Basis: Le Noroit * Method/Device: Piston corer (PC)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEvent
Latitude of eventLatitude
Longitude of eventLongitude
Calcium carbonateCaCO3%Auffret, Gérard AElement analysis, neutron activation (NAA)
ManganeseMn%Auffret, Gérard AElement analysis, neutron activation (NAA)calculated on a carbonate free basis
IronFe%Auffret, Gérard AElement analysis, neutron activation (NAA)calculated on a carbonate free basis
ArsenicAsmg/kgAuffret, Gérard AElement analysis, neutron activation (NAA)calculated on a carbonate free basis
AntimonySbmg/kgAuffret, Gérard AElement analysis, neutron activation (NAA)calculated on a carbonate free basis
BariumBamg/kgAuffret, Gérard AElement analysis, neutron activation (NAA)calculated on a carbonate free basis
10 ScandiumScmg/kgAuffret, Gérard AElement analysis, neutron activation (NAA)calculated on a carbonate free basis
11 ChromiumCrmg/kgAuffret, Gérard AElement analysis, neutron activation (NAA)calculated on a carbonate free basis
Size:
199 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Latitude

Longitude

CaCO3 [%]

Mn [%]

Fe [%]

As [mg/kg]

Sb [mg/kg]

Ba [mg/kg]
10 
Sc [mg/kg]
11 
Cr [mg/kg]
KB04 37.8600-32.5700900.91208119214951896
KF01 37.6800-32.4300800.6579112118511168
KF03 38.0000-32.2400941.1167111203201526142
KF04 37.9300-32.0700880.945891352136918111
KF05 37.5900-31.3400860.6729683111741687
KF07 37.2850-32.2400810.6109916527641299
KF08 37.0400-32.0100870.370951031452650
KF09 37.1113-32.2868780.62551324426709108
KF10 37.0500-32.3800830.432916368387511131
KF12 37.5300-32.2200810.78581017126601396
KF13 37.5783-31.8422840.909412192292915120
KF14 38.0600-31.7700830.577267119711475
KF15 38.6450-31.9100840.28505619031671
KF16 37.9990-31.1283810.468479217561584
KF17 38.1600-30.7700870.4315645115232098
KF18 38.6650-30.4700760.3025523111171774
KF19 38.3300-30.4600760.3542629188219101
KF20 38.1650-29.84007952718161681
KF21 37.9650-29.0500680.2266518172619111
KG06 37.3600-32.2900790.442013971145243395
KG20 38.0700-30.5900840.45065518781569
KS11 37.6000-32.3000830.4253915027131191
KS13 37.4700-32.1000690.4848886140020143
KS14 38.3300-30.7100850.33467451136421110
KS16 37.4400-29.0700760.136754175618103