Matches in SemOpenAlex for { <https://semopenalex.org/work/W2083412241> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W2083412241 endingPage "55" @default.
- W2083412241 startingPage "41" @default.
- W2083412241 abstract "The formation of layers in mafic intrusions has been explained by various processes, making it the subject of much controversy. The concept that layering originates from gravitational settling of crystals has been superseded in recent years by models involving in situ fractional crystallization. Here we present evidence from the Centre Hill complex that both processes may be operative simultaneously within the same intrusion. The Centre Hill complex is part of the Munro Lake sill, an Archean layered mafic intrusion emplaced in volcanic rocks of the Abitibi Subprovince. The Centre Hill complex comprises the following lithostratigraphic units: six lower cyclic units of peridotite and clinopyroxenite; a middle unit of leucogabbro; six upper cyclic units of branching-textured gabbro (BTG) and clotted-textured gabbro (CTG), the uppermost of these units being overlain by a marginal zone of fine-grained gabbro. The cyclic units of peridotite/clinopyroxenite and BTG/CTG are interpreted to have formed concurrently through fractional crystallization, associated with periodic replenishment of magma to the chamber. The units of peridotite and clinopyroxenite formed by gravitational accumulation of crystals that grew under the roof. The cyclic units of BTG and CTG formed along the upper margin of the sill by two different mechanisms: (1) layers of BTG crystallized in situ along an inward-growing roof and (2) layers of CTG formed by accumulation of buoyant plagioclase crystals. The layers of BTG are characterized by branching pseudomorphs after fayalite up to 50 cm in length that extend away from the upper margin. The original branching crystals are interpreted to have grown from stagnant intercumulus melt in a high thermal gradient resulting from the injection of new magma to the chamber." @default.
- W2083412241 created "2016-06-24" @default.
- W2083412241 creator A5009425950 @default.
- W2083412241 creator A5068032803 @default.
- W2083412241 date "1996-12-01" @default.
- W2083412241 modified "2023-09-27" @default.
- W2083412241 title "Gravity driven and in situ fractional crystallization processes in the Centre Hill complex, Abitibi Subprovince, Canada: Evidence from bilaterally-paired cyclic units" @default.
- W2083412241 cites W1617353566 @default.
- W2083412241 cites W1631901696 @default.
- W2083412241 cites W1981853521 @default.
- W2083412241 cites W1982277211 @default.
- W2083412241 cites W1986768234 @default.
- W2083412241 cites W1993022872 @default.
- W2083412241 cites W1994571978 @default.
- W2083412241 cites W1995932149 @default.
- W2083412241 cites W1997288424 @default.
- W2083412241 cites W1997667293 @default.
- W2083412241 cites W2021566918 @default.
- W2083412241 cites W2031209160 @default.
- W2083412241 cites W2045343349 @default.
- W2083412241 cites W2054104477 @default.
- W2083412241 cites W2057740871 @default.
- W2083412241 cites W2058772064 @default.
- W2083412241 cites W2076036700 @default.
- W2083412241 cites W2084245521 @default.
- W2083412241 cites W2088671494 @default.
- W2083412241 cites W2119117896 @default.
- W2083412241 cites W2120717080 @default.
- W2083412241 cites W2322069145 @default.
- W2083412241 cites W2332142389 @default.
- W2083412241 cites W2333485842 @default.
- W2083412241 cites W2334053258 @default.
- W2083412241 doi "https://doi.org/10.1016/s0024-4937(96)00006-0" @default.
- W2083412241 hasPublicationYear "1996" @default.
- W2083412241 type Work @default.
- W2083412241 sameAs 2083412241 @default.
- W2083412241 citedByCount "5" @default.
- W2083412241 countsByYear W20834122412020 @default.
- W2083412241 countsByYear W20834122412022 @default.
- W2083412241 crossrefType "journal-article" @default.
- W2083412241 hasAuthorship W2083412241A5009425950 @default.
- W2083412241 hasAuthorship W2083412241A5068032803 @default.
- W2083412241 hasConcept C11872896 @default.
- W2083412241 hasConcept C120806208 @default.
- W2083412241 hasConcept C127313418 @default.
- W2083412241 hasConcept C139347428 @default.
- W2083412241 hasConcept C167284885 @default.
- W2083412241 hasConcept C17409809 @default.
- W2083412241 hasConcept C183222429 @default.
- W2083412241 hasConcept C40201923 @default.
- W2083412241 hasConcept C42787717 @default.
- W2083412241 hasConcept C67236022 @default.
- W2083412241 hasConcept C79605941 @default.
- W2083412241 hasConcept C84372278 @default.
- W2083412241 hasConcept C9566828 @default.
- W2083412241 hasConceptScore W2083412241C11872896 @default.
- W2083412241 hasConceptScore W2083412241C120806208 @default.
- W2083412241 hasConceptScore W2083412241C127313418 @default.
- W2083412241 hasConceptScore W2083412241C139347428 @default.
- W2083412241 hasConceptScore W2083412241C167284885 @default.
- W2083412241 hasConceptScore W2083412241C17409809 @default.
- W2083412241 hasConceptScore W2083412241C183222429 @default.
- W2083412241 hasConceptScore W2083412241C40201923 @default.
- W2083412241 hasConceptScore W2083412241C42787717 @default.
- W2083412241 hasConceptScore W2083412241C67236022 @default.
- W2083412241 hasConceptScore W2083412241C79605941 @default.
- W2083412241 hasConceptScore W2083412241C84372278 @default.
- W2083412241 hasConceptScore W2083412241C9566828 @default.
- W2083412241 hasIssue "1-2" @default.
- W2083412241 hasLocation W20834122411 @default.
- W2083412241 hasOpenAccess W2083412241 @default.
- W2083412241 hasPrimaryLocation W20834122411 @default.
- W2083412241 hasRelatedWork W1976309125 @default.
- W2083412241 hasRelatedWork W2005641884 @default.
- W2083412241 hasRelatedWork W2026743454 @default.
- W2083412241 hasRelatedWork W2045676870 @default.
- W2083412241 hasRelatedWork W2081086259 @default.
- W2083412241 hasRelatedWork W2083412241 @default.
- W2083412241 hasRelatedWork W2084245521 @default.
- W2083412241 hasRelatedWork W2347957257 @default.
- W2083412241 hasRelatedWork W2394199976 @default.
- W2083412241 hasRelatedWork W3166051359 @default.
- W2083412241 hasVolume "39" @default.
- W2083412241 isParatext "false" @default.
- W2083412241 isRetracted "false" @default.
- W2083412241 magId "2083412241" @default.
- W2083412241 workType "article" @default.