Geochemistry on ferromanganese crusts and nodules from Green Bay, Lake Michigan
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
1973
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| _version_ | 1867168566457925632 |
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| author | Callender, Edward |
| author_facet | Callender, Edward |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The differential solubility of ferromanganese oxides can lead to stratigraphic separation of iron and manganese. Results of chemical analysis of a sequence of ferromanganese nodules overlying iron-rich crusts in northern Green Bay show that selec¬tive ion transport is important in concentrating manganese and associated trace elements near the oxygenated water-sediment interface. Manganese carbonate, which cements ferromanganese nodules, occurs in dark-gray silty sands that are located adjacent to the organic-rich muds of southern Green Bay. These muds contain an average of approximately 3.5 ppm (6x10-5M) interstitial Mn with 2.8 meq/l carbonate alkalinity. Thermodynamic calculation shows that interstitial water approaches equilibrium with MnCO3 in the upper 10 cm of sediment. This carbonate has a composition (Mn73Ca22Fe5)CO3 and has been identified as rhodochrosite. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_848116 |
| institution | PANGAEA |
| language | en |
| publishDate | 1973 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry on ferromanganese crusts and nodules from Green Bay, Lake Michigan Callender, Edward CALL1973_GB-69-11; CALL1973_GB-69-19; CALL1973_GB-69-25; CALL1973_LM-69-26; CALL1973_MI-7; CALL1973_UM-GB-71-107; CALL1973_UM-GB-71-108; CALL1973_UM-GB-71-19; CALL1973_UM-GB-71-57; CALL1973_UM-GB-71-99; CALL1973_UM-GB-72-20; CALL1973_UM-GB-72-34; Dredge; DRG; Green Bay, Lake Michigan; Green Bay-Lake Michigan; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ROSS1968_1 The differential solubility of ferromanganese oxides can lead to stratigraphic separation of iron and manganese. Results of chemical analysis of a sequence of ferromanganese nodules overlying iron-rich crusts in northern Green Bay show that selec¬tive ion transport is important in concentrating manganese and associated trace elements near the oxygenated water-sediment interface. Manganese carbonate, which cements ferromanganese nodules, occurs in dark-gray silty sands that are located adjacent to the organic-rich muds of southern Green Bay. These muds contain an average of approximately 3.5 ppm (6x10-5M) interstitial Mn with 2.8 meq/l carbonate alkalinity. Thermodynamic calculation shows that interstitial water approaches equilibrium with MnCO3 in the upper 10 cm of sediment. This carbonate has a composition (Mn73Ca22Fe5)CO3 and has been identified as rhodochrosite. |
| title | Geochemistry on ferromanganese crusts and nodules from Green Bay, Lake Michigan |
| topic | CALL1973_GB-69-11; CALL1973_GB-69-19; CALL1973_GB-69-25; CALL1973_LM-69-26; CALL1973_MI-7; CALL1973_UM-GB-71-107; CALL1973_UM-GB-71-108; CALL1973_UM-GB-71-19; CALL1973_UM-GB-71-57; CALL1973_UM-GB-71-99; CALL1973_UM-GB-72-20; CALL1973_UM-GB-72-34; Dredge; DRG; Green Bay, Lake Michigan; Green Bay-Lake Michigan; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ROSS1968_1 |
| url | https://doi.org/10.1594/PANGAEA.848116 |