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Cronan, David S; Galacz, A; Mindeszenty, A; Moorby, S A; Polgari, M (1991): (Table 1, page 661) Average composition of fossil nodules from three localities studied in the Transdanubian Central Mountains of Hungary. PANGAEA, https://doi.org/10.1594/PANGAEA.858466, Supplement to: Cronan, DS et al. (1991): Tethyan ferromanganese oxide deposits from Jurassic rocks in Hungary. Journal of the Geological Society, 148(4), 655-668, https://doi.org/10.1144/gsjgs.148.4.0655

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Abstract:
Fossil manganese nodules and encrustations from seamount' and basin' localities in the Transdanubian Central Mountains of Hungary are lithologically, mineralogically and chemically similar to some modern marine ferromanganese oxide deposits, and show no evidence of postdepositional changes other than cementation. Five groups of deposits were encountered: Fe/Mn nodules, encrusted shells, pavements, stains, and Fe oxide encrusted intraclasts, the first three of which are specific to the 'seamount' environment and the last to the basins'. Optical and electron microprobe investigation of the samples shows them to exhibit many similarities with modern ferromanganese oxide deposits, and that many of the nodules are surrounded by a halo of dispersed ferromanganese oxides, strongly suggesting that they continued to accrete metals through the pore waters of unlithified sediments for a period after burial. By contrast, pavements which appear to have grown on hardgrounds at the sea floor show little or no evidence of derivation of metals from underlying sediments. Geochemical investigations on the deposits show the seamount' varieties to be closer in composition to most modern nodules and crusts than the basin' varieties, and that the latter are essentially manganese and trace-element-poor ferruginous deposits. Nevertheless, all can be more or less compositionally equated with modern ferromanganese oxide deposits forming in marginal Atlantic environments, which would be in accord with the proposed depositional environment of the Transdanubian Central Mountains based on other evidence.
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
Coverage:
Median Latitude: 47.404830 * Median Longitude: 18.124108 * South-bound Latitude: 47.211648 * West-bound Longitude: 17.800762 * North-bound Latitude: 47.715674 * East-bound Longitude: 18.469906
Minimum DEPTH, sediment/rock: 1.50 m * Maximum DEPTH, sediment/rock: 7.00 m
Event(s):
CRNHG1  * Latitude: 47.211648 * Longitude: 17.800762 * Elevation: 412.0 m * Location: Harskut, Hungary * Method/Device: Hammer (HAM)
CRNHG2  * Latitude: 47.287168 * Longitude: 18.101656 * Elevation: 377.0 m * Location: Tuzkoves Arok, Hungary * Method/Device: Hammer (HAM)
CRNHG3  * Latitude: 47.715674 * Longitude: 18.469906 * Elevation: 256.0 m * Location: Tardosbanya-Banyahegy, Hungary * Method/Device: Hammer (HAM)
Comment:
Compositions are recalculated carbonate free. Samples were reduced to powder and leached in acid.
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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEventCronan, David S
IdentificationIDCronan, David S
DEPTH, sediment/rockDepth sedmCronan, David SGeocode
PotassiumK%Cronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
BerylliumBemg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
MagnesiumMg%Cronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
AluminiumAl%Cronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
LanthanumLamg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
TitaniumTimg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
10 VanadiumVmg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
11 ChromiumCrmg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
12 ManganeseMn%Cronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
13 IronFe%Cronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
14 CobaltComg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
15 NickelNimg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
16 CopperCumg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
17 ZincZnmg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
18 LeadPbmg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
19 PhosphorusPmg/kgCronan, David SICP-AES, Inductively coupled plasma - atomic emission spectroscopy
20 Deposit typeDeposit typeCronan, David S
21 Sediment typeSedimentCronan, David S
22 Geologic age nameGeol ageCronan, David S
23 DescriptionDescriptionCronan, David S
Size:
63 data points

Data

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


Event

ID

Depth sed [m]

K [%]

Be [mg/kg]

Mg [%]

Al [%]

La [mg/kg]

Ti [mg/kg]
10 
V [mg/kg]
11 
Cr [mg/kg]
12 
Mn [%]
13 
Fe [%]
14 
Co [mg/kg]
15 
Ni [mg/kg]
16 
Cu [mg/kg]
17 
Zn [mg/kg]
18 
Pb [mg/kg]
19 
P [mg/kg]
20 
Deposit type
21 
Sediment
22 
Geol age
23 
Description
CRNHG1 CRNHG1-11.500.32.90.782.30317087747910.230.01527428112066121023873Mn nodule and Mn crustRed nodular limestoneToarcian-BajocianAverage composition on several samples
CRNHG2 CRNHG2-17.001.92.80.785.00325777413461.719.22115172812492371252Mn nodule and Mn crustPinkish limestonePliensbashianAverage composition on several samples
CRNHG3 CRNHG3-16.001.04.10.703.40237303329181.922.518711256453481901270Mn nodule and Mn crustPinkish limestonePliensbashianAverage composition on several samples