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- Agglomerate abstract "Agglomerates (from the Latin 'agglomerare' meaning 'to form into a ball') are coarse accumulations of large blocks of volcanic material that contain at least 75% bombs. Volcanic bombs differ from volcanic blocks in that their shape records fluidal surfaces: they may, for example, have ropy, cauliform, scoriaceous, or folded, chilled margins and spindle, spatter, ribbon, ragged, or amoeboid shapes. Globular masses of lava may have been shot from the crater at a time when partly molten lava was exposed, and was frequently shattered by sudden outbursts of steam. These bombs were viscous at the moment of ejection and by rotation in the air acquired their shape. They are commonly 1 to 2 feet (30 to 60 cm) in diameter, but specimens as large as 12 feet (3.7 m) have been observed. There is less variety in their composition at any one volcanic centre than in the case of the lithic blocks, and their composition indicates the type of magma being erupted.Agglomerates are typically found near volcanic vents and within volcanic conduits, where they may be associated with pyroclastic or intrusive volcanic breccias. Older (pre-1970) publications, particularly in Scotland, referred to any coarse-grained volcaniclastic rock as 'agglomerate', which led to debris flow deposits, talus deposits and other types of breccia being mistaken for vents. Agglomerates are typically poorly sorted, may contain a fine ash or tuff matrix and vary from matrix to clast support. They may be monolithologic or heterolithic, and may contain some blocks of various igneous rocks. There are various differences between agglomerates and ordinary ash beds or tuffs. Agglomerates are coarser and less frequently well-bedded. Agglomerates can be non-welded or welded, such as coarse basaltic 'spatter'. They typically form proximally during Strombolian eruptions, and are common at strongly peralkaline volcanoes. Some large agglomerate deposits are deposited from pyroclastic density currents during explosive caldera-forming eruptions, such as at Santorini, Taal, and Campi Flegrei. They may be massive to crudely bedded, and can attain great thicknesses.Crystalline masses of a different kind occur in some numbers in certain agglomerates. They consist of volcanic minerals very much the same as those formed in the lava, but exhibiting certain peculiarities which indicate that they have formed slowly under pressure at considerable depths. They bear a resemblance to plutonic igneous rocks, but are more correctly to be regarded as agglomerations of crystals formed within the liquid lava as it slowly rose towards the surface, and at a subsequent period cast out by violent steam explosions. The sanidinites of the Eifel belong to this group. At Vesuvius, Ascension, St Vincent and many other volcanoes, they form a considerable part of the coarser ash-beds. Their commonest minerals are olivine, anorthite, hornblende, augite, biotite and leucite.".
- Agglomerate thumbnail Agglomerate.jpg?width=300.
- Agglomerate wikiPageID "1711396".
- Agglomerate wikiPageLength "3558".
- Agglomerate wikiPageOutDegree "27".
- Agglomerate wikiPageRevisionID "646422870".
- Agglomerate wikiPageWikiLink Amoeba.
- Agglomerate wikiPageWikiLink Amoeboid.
- Agglomerate wikiPageWikiLink Anorthite.
- Agglomerate wikiPageWikiLink Ascension_of_Jesus.
- Agglomerate wikiPageWikiLink Ascension_of_Jesus_Christ.
- Agglomerate wikiPageWikiLink Augite.
- Agglomerate wikiPageWikiLink Biotite.
- Agglomerate wikiPageWikiLink Category:Volcanic_rocks.
- Agglomerate wikiPageWikiLink Category:Volcanology.
- Agglomerate wikiPageWikiLink Crystalline.
- Agglomerate wikiPageWikiLink Crystallinity.
- Agglomerate wikiPageWikiLink Eifel.
- Agglomerate wikiPageWikiLink Hornblende.
- Agglomerate wikiPageWikiLink Igneous.
- Agglomerate wikiPageWikiLink Igneous_rock.
- Agglomerate wikiPageWikiLink Latin.
- Agglomerate wikiPageWikiLink Latin_language.
- Agglomerate wikiPageWikiLink Leucite.
- Agglomerate wikiPageWikiLink Metamorphic_facies.
- Agglomerate wikiPageWikiLink Olivine.
- Agglomerate wikiPageWikiLink Pluton.
- Agglomerate wikiPageWikiLink Rock_(geology).
- Agglomerate wikiPageWikiLink Saint_Vincent_(Antilles).
- Agglomerate wikiPageWikiLink Saint_Vincent_(island).
- Agglomerate wikiPageWikiLink Sanidinite_facies.
- Agglomerate wikiPageWikiLink Scoria.
- Agglomerate wikiPageWikiLink Steam.
- Agglomerate wikiPageWikiLink Strombolian_eruption.
- Agglomerate wikiPageWikiLink Tuff.
- Agglomerate wikiPageWikiLink Viscosity.
- Agglomerate wikiPageWikiLink Viscous.
- Agglomerate wikiPageWikiLink Volcanic_ash.
- Agglomerate wikiPageWikiLink Volcanic_bomb.
- Agglomerate wikiPageWikiLink Volcano.
- Agglomerate wikiPageWikiLink File:Agglomerate.jpg.
- Agglomerate wikiPageWikiLinkText "Agglomerate".
- Agglomerate wikiPageWikiLinkText "Agglomeritic".
- Agglomerate wikiPageWikiLinkText "agglomerate".
- Agglomerate wikiPageWikiLinkText "agglomeritic".
- Agglomerate hasPhotoCollection Agglomerate.
- Agglomerate volume "1".
- Agglomerate wikiPageUsesTemplate Template:Clarify.
- Agglomerate wikiPageUsesTemplate Template:Convert.
- Agglomerate wikiPageUsesTemplate Template:EB1911.
- Agglomerate wikiPageUsesTemplate Template:Refimprove.
- Agglomerate wikiPageUsesTemplate Template:Reflist.
- Agglomerate wikiPageUsesTemplate Template:Sfn.
- Agglomerate wikiPageUsesTemplate Template:Specify.
- Agglomerate wikiPageUsesTemplate Template:Update_inline.
- Agglomerate wikiPageUsesTemplate Template:Volcanoes.
- Agglomerate wstitle "Agglomerate".
- Agglomerate subject Category:Volcanic_rocks.
- Agglomerate subject Category:Volcanology.
- Agglomerate hypernym Accumulations.
- Agglomerate type Article.
- Agglomerate type Disease.
- Agglomerate type Article.
- Agglomerate comment "Agglomerates (from the Latin 'agglomerare' meaning 'to form into a ball') are coarse accumulations of large blocks of volcanic material that contain at least 75% bombs. Volcanic bombs differ from volcanic blocks in that their shape records fluidal surfaces: they may, for example, have ropy, cauliform, scoriaceous, or folded, chilled margins and spindle, spatter, ribbon, ragged, or amoeboid shapes.".
- Agglomerate label "Agglomerate".
- Agglomerate sameAs Vulkanisches_Agglomerat.
- Agglomerate sameAs Aglomerado.
- Agglomerate sameAs Aglomeraat_(geoloogia).
- Agglomerate sameAs آگلومرا.
- Agglomerate sameAs Agglomeraatti.
- Agglomerate sameAs Ceirtleán.
- Agglomerate sameAs אגלומרט.
- Agglomerate sameAs Agglomeraat.
- Agglomerate sameAs Agglomerat.
- Agglomerate sameAs Agglomerat.
- Agglomerate sameAs m.05qb51.
- Agglomerate sameAs Vulkanski_aglomerati.
- Agglomerate sameAs Вулкански_агломерати.
- Agglomerate sameAs Agglomerat.
- Agglomerate sameAs Агломерат.
- Agglomerate sameAs Q1257738.
- Agglomerate sameAs Q1257738.
- Agglomerate sameAs 集塊岩.
- Agglomerate wasDerivedFrom Agglomerate?oldid=646422870.
- Agglomerate depiction Agglomerate.jpg.
- Agglomerate isPrimaryTopicOf Agglomerate.