Earth:Kurravaara conglomerate
From HandWiki
Kurravaara conglomerate (Swedish: Kurravaarakonglomeratet) is a rock unit of polymict conglomerate found in northernmost Sweden.[1] It rest confomably on top of greenstones that were originally basaltic lavas and tuff.[1][2] In one locations both rock units interdigitate.[1] The conglomerate has boulders of porphyritic trachyandesite, iron-apatite oxide and those that are a blend of both rock types. Greenstones are also found as boulders.[1] In some locations the unit is poor in boulders and is made mostly of metatuff.[1] It is overlain by the Hopukka Formation, but no clear contact exists as rock units grade into each other.[2]
See also
- Hauki quartzite
- Kiruna mine
- Kiruna porphyry
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Offerberg, Jan (1967) (in Swedish). Beskrivning till berggrundskartbladen Kiruna NV, NO, SV, SO. Stockholm: Sveriges Geologiska Undersökning. pp. 34-36.
- ↑ 2.0 2.1 Andersson, J.B., Bauer, T.E., & Martinsson, O. (2021). Structural Evolution of the Central Kiruna Area, Northern Norrbotten, Sweden: Implications on the Geologic Setting Generating Iron Oxide-Apatite and Epigenetic Iron and Copper Sulfides. Economic Geology.
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