disconformity | American Geosciences Institute

disconformity (dis-con-form'-i-ty). ... The tendency is to apply the term to breaks represented elsewhere by rock units of at least formation rank ... Skiptomaincontent Menu AboutAboutAGI BoardofDirectors AGIFoundation Awards Nominations NewsandAnnouncements MembershipBenefits StrategicPlan AnnualReport Bylaws Jobs ContactUs FederationMembershipBenefits MemberSocieties MemberSocietyCouncil InternationalAssociates TradeAssociates AcademicAssociates RegionalAssociates LiaisonOrganizations CommunityDocuments ProgramsCenterforGeoscience&Society Education&Outreach Policy&CriticalIssues ScholarlyInformation Workforce EarthScienceWeek PublicationsPublicationStore GlossaryofGeology EarthScienceWeekToolkit 2020AGIPublicationsCatalog EngageI'maGeoscientist FreeGeoscienceResources AGIConnections BeaVisitingGeoscientist UseOurWorkspace Donate PDFversiondisconformity(dis-con-form'-i-ty).Anunconformityinwhichthebeddingplanesaboveandbelowthebreakareessentiallyparallel,indicatingasignificantinterruptionintheorderlysequenceofsedimentaryrocks,generallybyaconsiderableintervaloferosion(orsometimesofnondeposition),andusuallymarkedbyavisibleandirregularorunevenerosionsurfaceofappreciablerelief;e.g.anunconformityinwhichtheolderrocksremainedessentiallyhorizontalduringerosionorduringsimpleverticalrisingandsinkingofthecrust(withouttiltingorfaulting).Thetendencyistoapplythetermtobreaksrepresentedelsewherebyrockunitsofatleastformationrank(StokesandVarnes,1955,p.157).Thetermformerlyincludedwhatisnowknownasparaconformity.Syn:parallelunconformity;erosionalunconformity;nonangularunconformity. Tags: geotimesWebsite: GeoWordoftheDay AboutAboutAGI BoardofDirectors AGIFoundation Awards Nominations NewsandAnnouncements MembershipBenefits StrategicPlan AnnualReport Bylaws Jobs ContactUs FederationMembershipBenefits MemberSocieties MemberSocietyCouncil InternationalAssociates TradeAssociates AcademicAssociates RegionalAssociates LiaisonOrganizations CommunityDocuments ProgramsCenterforGeoscience&Society Education&Outreach Policy&CriticalIssues ScholarlyInformation Workforce EarthScienceWeek PublicationsPublicationStore GlossaryofGeology EarthScienceWeekToolkit 2020AGIPublicationsCatalog EngageI'maGeoscientist FreeGeoscienceResources AGIConnections BeaVisitingGeoscientist UseOurWorkspace Donate