Matches in SemOpenAlex for { <https://semopenalex.org/work/W2108049648> ?p ?o ?g. }
Showing items 1 to 85 of
85
with 100 items per page.
- W2108049648 endingPage "1585" @default.
- W2108049648 startingPage "1574" @default.
- W2108049648 abstract "The Gunflint Iron-formation of western Ontario and the Sokoman Iron-formation of the Labrador–Quebec geosyncline both contain interbeds of coarse-grained volcaniclastic detritus. Volcaniclastic beds in the Gunflint are typically less than a metre thick and display normal grading and other physical structures typical of high- and low-density turbidites. Similar volcaniclastic beds are present in the Sokoman, as well as thicker accumulations with structures indicative of deposition from high-density turbidity currents. The volcaniclastic detritus in both iron-formations consists largely of well-sorted vitric ash and lapilli with accessory holocrystalline grains and solitary feldspar crystals. Internal textures of the vitric grains, plus the presence of armored lapilli in the Gunflint, suggest they are products of hydroclastic eruptions. However the clasts in most beds are heterogeneous and well-rounded, indicating they are sedimentary rather than eruptive deposits. Quench textures, coalesced vesicles, and diabasic textures indicate that the volcaniclastics were originally basaltic in composition, but the rocks have been pervasively altered to iron-rich chlorite, calcite, and K-feldspar (Or 98 Ab 2 An 0 ) with minor quartz and illite. In addition to being pseudomorphs after the original volcaniclastic textures within grains, these minerals also occur as interstitial and vesicle-filling cements. Fibrous rims of chlorite and poikilotopic to blocky calcite are the most abundant cement types. Cementation commenced early, inasmuch as some zones show little evidence of compaction. Patterns of cementation and alteration may indicate that geothermal gradients in such iron-formation basins were steeper than they are in the most closely comparable modern settings, namely passive margins." @default.
- W2108049648 created "2016-06-24" @default.
- W2108049648 creator A5017155734 @default.
- W2108049648 creator A5065998219 @default.
- W2108049648 date "1989-08-01" @default.
- W2108049648 modified "2023-09-27" @default.
- W2108049648 title "Deposition and alteration of volcaniclastic strata in two large, early Proterozoic iron-formations in Canada" @default.
- W2108049648 cites W1964631602 @default.
- W2108049648 cites W1965192410 @default.
- W2108049648 cites W1969221047 @default.
- W2108049648 cites W1973956725 @default.
- W2108049648 cites W1982724469 @default.
- W2108049648 cites W2028802067 @default.
- W2108049648 cites W2034232515 @default.
- W2108049648 cites W2050840695 @default.
- W2108049648 cites W2083427109 @default.
- W2108049648 cites W2107535515 @default.
- W2108049648 cites W2155275483 @default.
- W2108049648 cites W2162082869 @default.
- W2108049648 cites W2493522109 @default.
- W2108049648 cites W2908857840 @default.
- W2108049648 cites W3103064985 @default.
- W2108049648 cites W418409885 @default.
- W2108049648 doi "https://doi.org/10.1139/e89-134" @default.
- W2108049648 hasPublicationYear "1989" @default.
- W2108049648 type Work @default.
- W2108049648 sameAs 2108049648 @default.
- W2108049648 citedByCount "15" @default.
- W2108049648 countsByYear W21080496482013 @default.
- W2108049648 countsByYear W21080496482016 @default.
- W2108049648 countsByYear W21080496482017 @default.
- W2108049648 countsByYear W21080496482018 @default.
- W2108049648 countsByYear W21080496482021 @default.
- W2108049648 crossrefType "journal-article" @default.
- W2108049648 hasAuthorship W2108049648A5017155734 @default.
- W2108049648 hasAuthorship W2108049648A5065998219 @default.
- W2108049648 hasConcept C120806208 @default.
- W2108049648 hasConcept C125910819 @default.
- W2108049648 hasConcept C127313418 @default.
- W2108049648 hasConcept C138170599 @default.
- W2108049648 hasConcept C151730666 @default.
- W2108049648 hasConcept C17409809 @default.
- W2108049648 hasConcept C199289684 @default.
- W2108049648 hasConcept C2778520076 @default.
- W2108049648 hasConcept C2779429093 @default.
- W2108049648 hasConcept C2779870107 @default.
- W2108049648 hasConcept C2780191791 @default.
- W2108049648 hasConcept C40212044 @default.
- W2108049648 hasConcept C6494504 @default.
- W2108049648 hasConcept C95869378 @default.
- W2108049648 hasConceptScore W2108049648C120806208 @default.
- W2108049648 hasConceptScore W2108049648C125910819 @default.
- W2108049648 hasConceptScore W2108049648C127313418 @default.
- W2108049648 hasConceptScore W2108049648C138170599 @default.
- W2108049648 hasConceptScore W2108049648C151730666 @default.
- W2108049648 hasConceptScore W2108049648C17409809 @default.
- W2108049648 hasConceptScore W2108049648C199289684 @default.
- W2108049648 hasConceptScore W2108049648C2778520076 @default.
- W2108049648 hasConceptScore W2108049648C2779429093 @default.
- W2108049648 hasConceptScore W2108049648C2779870107 @default.
- W2108049648 hasConceptScore W2108049648C2780191791 @default.
- W2108049648 hasConceptScore W2108049648C40212044 @default.
- W2108049648 hasConceptScore W2108049648C6494504 @default.
- W2108049648 hasConceptScore W2108049648C95869378 @default.
- W2108049648 hasIssue "8" @default.
- W2108049648 hasLocation W21080496481 @default.
- W2108049648 hasOpenAccess W2108049648 @default.
- W2108049648 hasPrimaryLocation W21080496481 @default.
- W2108049648 hasRelatedWork W1985362428 @default.
- W2108049648 hasRelatedWork W2021315051 @default.
- W2108049648 hasRelatedWork W2058691261 @default.
- W2108049648 hasRelatedWork W2463214895 @default.
- W2108049648 hasRelatedWork W2531823429 @default.
- W2108049648 hasRelatedWork W2560687874 @default.
- W2108049648 hasRelatedWork W2765128135 @default.
- W2108049648 hasRelatedWork W302824337 @default.
- W2108049648 hasRelatedWork W4295211035 @default.
- W2108049648 hasRelatedWork W2183574938 @default.
- W2108049648 hasVolume "26" @default.
- W2108049648 isParatext "false" @default.
- W2108049648 isRetracted "false" @default.
- W2108049648 magId "2108049648" @default.
- W2108049648 workType "article" @default.