| dbo:abstract |
Als Eisenkalkstein bezeichnete man Kalksteinablagerungen mit mineralischen Anteilen verschiedener Eisenverbindungen über 15 Prozent. Es handelt sich um einen wissenschaftshistorischen Oberbegriff aus der Sedimentologie für ein sedimentäres Fe-Gestein. (de) Iron-rich sedimentary rocks are sedimentary rocks which contain 15 wt.% or more iron. However, most sedimentary rocks contain iron in varying degrees. The majority of these rocks were deposited during specific geologic time periods: The Precambrian (3800 to 539 million years ago), the early Paleozoic (539 to 419 million years ago), and the middle to late Mesozoic (205 to 66 million years ago). Overall, they make up a very small portion of the total sedimentary record. Iron-rich sedimentary rocks have economic uses as iron ores. Iron deposits have been located on all major continents with the exception of Antarctica. They are a major source of iron and are mined for commercial use. The main iron ores are from the oxide group consisting of hematite, goethite, and magnetite. The carbonate siderite is also typically mined. A productive belt of iron formations is known as an iron range. (en) |
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dbr:Calcite dbr:Precambrian dbr:Pyrite dbr:Oolite dbr:Birefringence dbc:Sedimentary_rocks dbr:Aragonite dbr:Ooid dbr:Sedimentary_rock dbr:Volcanic_rock dbr:Continental_shelf dbr:Cross-bedding dbr:Chert dbr:Erosion dbr:Nodule_(geology) dbr:Opacity_(optics) dbr:Permineralization dbr:Clay_mineral dbr:Electron dbr:Glauconite dbr:Minnesotaite dbr:Black_shale dbr:Ankerite dbr:Antarctica dbr:Limestones dbr:Limonite dbr:Magnetite dbr:Bog dbr:Bog_iron dbr:Siderite dbr:Silica dbr:Stromatolite dbr:Sedimentary_basin dbr:Banded_iron_formation dbr:Dolomite_(rock) dbr:Iron_ore dbr:Ironstone dbr:Laterite dbr:Load_cast dbr:Aluminium_oxide dbr:Feldspar dbc:Iron_ores dbr:Paleozoic dbr:Carbonate_mineral dbr:Fossil dbr:Goethite dbr:Graded_bedding dbr:Island_arc dbr:Redox dbr:Rift dbr:Hematite dbr:Iron dbr:Iron(II)_carbonate dbr:Ferric dbr:File:IronInRocksMakeRiverRed.jpg dbr:Siltstone dbr:Archean dbr:Abyssal_plain dbr:Chamosite dbr:Sulfate dbr:Turbidite dbr:Marcasite dbr:Ferrous dbr:Continental_slope dbr:Greenalite dbr:Pyritization dbr:Mesozoic dbr:Metamorphism dbr:Rare-earth_element dbr:Matrix_(geology) dbr:Sandstone dbr:Swamp dbr:Shale dbr:Soil dbr:Weathering dbr:Oxidation dbr:Mudstone dbr:Silicate_mineral dbr:Oxide_mineral dbr:Thin_section dbr:Back_arc_basin dbr:Ripple_mark dbr:Pisolitic dbr:Sedimentary_facies dbr:Sedimentary_structure dbr:File:MichiganBIF.jpg dbr:File:Continental_shelf.png dbr:File:Black-band_ironstone_(aka).jpg dbr:File:Limonite_bog_iron_cm02.jpg dbr:File:Banded_iron_formation.jpg dbr:File:Hematite_-_oolitic_with_shale_Iro..._Clinton,_Oneida_County,_New_York.jpg dbr:File:Iron_Bacteria_in_Bankhead_National_Forest.JPG dbr:File:LimoniteUSGOV.jpg dbr:File:Pyritized_lytoceras.png dbr:File:Rhyolite_pmg_ss_2006.jpg dbr:Mud_crack |
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dbr:Rocks |
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| rdfs:comment |
Als Eisenkalkstein bezeichnete man Kalksteinablagerungen mit mineralischen Anteilen verschiedener Eisenverbindungen über 15 Prozent. Es handelt sich um einen wissenschaftshistorischen Oberbegriff aus der Sedimentologie für ein sedimentäres Fe-Gestein. (de) Iron-rich sedimentary rocks are sedimentary rocks which contain 15 wt.% or more iron. However, most sedimentary rocks contain iron in varying degrees. The majority of these rocks were deposited during specific geologic time periods: The Precambrian (3800 to 539 million years ago), the early Paleozoic (539 to 419 million years ago), and the middle to late Mesozoic (205 to 66 million years ago). Overall, they make up a very small portion of the total sedimentary record. (en) |
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Eisenkalkstein (de) Iron-rich sedimentary rocks (en) |
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