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- Tonstein abstract "Tonstein (from the German "Ton", meaning clay, plus "Stein", meaning rock) is a hard, compact sedimentary rock that is composed mainly of kaolinite or, less commonly, other clay minerals such as montmorillonite and illite. The clays often are cemented by iron oxide minerals, carbonaceous matter, or chlorite. Tonsteins form from volcanic ash deposited in swamps.Tonsteins occur as distinctive, thin, and very laterally extensive layers in coal seams throughout the world. They are often used as key beds to correlate the strata in which they are found. The regional persistence of tonsteins and relict phenocrysts indicate that they formed as the result of the diagenetic alteration of volcanic ash falls in an acidic (low pH) and low-salinity environment, consistent with a freshwater swamp. In contrast, the alteration of a volcanic ashfall deposit in a marine environment typically produces a bentonite layer.The induration of tonsteins is in contrast to kaolin claystones that can be mined for kaolin clay, such as the ball clays found at Bovey Tracey which formed by the erosion of a nearby kaolinised granite. These deposits are generally softer, white, and plastic.".
- Tonstein wikiPageExternalLink bentrefs.html.
- Tonstein wikiPageID "17253910".
- Tonstein wikiPageLength "2857".
- Tonstein wikiPageOutDegree "32".
- Tonstein wikiPageRevisionID "603039508".
- Tonstein wikiPageWikiLink Ball_clay.
- Tonstein wikiPageWikiLink Bentonite.
- Tonstein wikiPageWikiLink Bovey_Tracey.
- Tonstein wikiPageWikiLink Carbon.
- Tonstein wikiPageWikiLink Category:Claystone.
- Tonstein wikiPageWikiLink Category:Sedimentary_rocks.
- Tonstein wikiPageWikiLink Chlorite_group.
- Tonstein wikiPageWikiLink Clay_mineral.
- Tonstein wikiPageWikiLink Clay_minerals.
- Tonstein wikiPageWikiLink Claystone.
- Tonstein wikiPageWikiLink Coal.
- Tonstein wikiPageWikiLink Diagenesis.
- Tonstein wikiPageWikiLink Friability.
- Tonstein wikiPageWikiLink German_language.
- Tonstein wikiPageWikiLink Granite.
- Tonstein wikiPageWikiLink Illite.
- Tonstein wikiPageWikiLink Indurated.
- Tonstein wikiPageWikiLink Iron_oxide.
- Tonstein wikiPageWikiLink Kaolinite.
- Tonstein wikiPageWikiLink Key_bed.
- Tonstein wikiPageWikiLink Lutite.
- Tonstein wikiPageWikiLink Montmorillonite.
- Tonstein wikiPageWikiLink Mudrock.
- Tonstein wikiPageWikiLink Mudstone.
- Tonstein wikiPageWikiLink PH.
- Tonstein wikiPageWikiLink Pelite.
- Tonstein wikiPageWikiLink Phenocryst.
- Tonstein wikiPageWikiLink Salinity.
- Tonstein wikiPageWikiLink Sedimentary_rock.
- Tonstein wikiPageWikiLink Shale.
- Tonstein wikiPageWikiLink Strata.
- Tonstein wikiPageWikiLink Stratum.
- Tonstein wikiPageWikiLink Swamp.
- Tonstein wikiPageWikiLink Volcanic_ash.
- Tonstein wikiPageWikiLinkText "Tonstein".
- Tonstein wikiPageWikiLinkText "tonstein".
- Tonstein hasPhotoCollection Tonstein.
- Tonstein wikiPageUsesTemplate Template:Petrology-stub.
- Tonstein wikiPageUsesTemplate Template:Reflist.
- Tonstein subject Category:Claystone.
- Tonstein subject Category:Sedimentary_rocks.
- Tonstein hypernym Rock.
- Tonstein type Agent.
- Tonstein comment "Tonstein (from the German "Ton", meaning clay, plus "Stein", meaning rock) is a hard, compact sedimentary rock that is composed mainly of kaolinite or, less commonly, other clay minerals such as montmorillonite and illite. The clays often are cemented by iron oxide minerals, carbonaceous matter, or chlorite. Tonsteins form from volcanic ash deposited in swamps.Tonsteins occur as distinctive, thin, and very laterally extensive layers in coal seams throughout the world.".
- Tonstein label "Tonstein".
- Tonstein sameAs m.043lhhk.
- Tonstein sameAs Q7821682.
- Tonstein sameAs Q7821682.
- Tonstein wasDerivedFrom Tonstein?oldid=603039508.
- Tonstein isPrimaryTopicOf Tonstein.