FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2743029636> ?p ?o ?g. }

• W2743029636 endingPage "48" @default.
• W2743029636 startingPage "23" @default.
• W2743029636 abstract "The Higran section in northern Iraq exposes the contact between two widely recognized formations. They are the Shiranish and Kolosh Formations, considered to be of Cretaceous (Campanian-Maastrichtian) and Tertiary (Paleocene-Eocene) ages respectively. Samples were taken from above and below the physical contact between the two formations at 5 to 7 cm apart. Planktonic foraminiferal biostratigraphic analysis of the Higran section indicates that the Cretaceous /Tertiary boundary in this section is hitherto the most complete and expanded section in Iraq up to date. Quantitative high resolution foraminiferal biostratigraphic analysis has shown that a major biotic change in the planktonic foraminifera occurred during the end of the Cretaceous to the beginning of the Tertiary. The Maastrichtian Gansserina gansseri and the Abathomphalus mayaroensis Zones were recognized. The Abathomphalus mayaroensis Zone was subdivided into three subzones they are: Racemiguembelina fructicosa Subzone, Pseudoguembelina hariaensis Subzone and part of Pseudoguembelina palpebra Subzone. The defined Tertiary zones are: Guembelitria cretacea Zone, Parvularugoglobigerina eugubina Zone, Parasubbotina pseudobulloides Zone and part of the Parasubbotina varianta Zone. This study has established the absence of the Plummerita hantkeninoides Zone within the Cretaceous succession indicating a hiatus (Diastem) between the Cretaceous and Tertiary successions. The planktonic to benthonic ratio of the Shiranish Formation across the K/T boundary shows the role of the outer shelf to upper slope environments well above and below the K/T boundary in the section, hence it is characterized by lithologic continuity above and below the missing interval. The planktonic foraminiferal extinction in the Higran section occurred gradually and over relatively long period. Seventeen species (40.5% of the Cretaceous species) became extinct in the Late Maastrichtian before the first appearance of the Tertiary species, whereas nineteen species (45.2%) disappeared exactly with the hiatus that defines the K/T boundary in the studied section. Most of the extinct forms are large, complex, tropical and subtropical. Nevertheless, five species of the small cosmopolitan generalists with simple morphologies (14.3%of the Cretaceous species) survived the K/T boundary and the drastic change in the ecosystem. They did however become extinct in the Early Danian. The fine biostratigraphic analysis also revealed that the K/T boundary is located in the same lithology of blue marls within the Shiranish Formation, rather than at the contact between the Shiranish and Kolosh formations.This study has shown that the well-known Shiranish Formation conventionally taken to be of Cretaceous age, actually extends into the Paleocene in the Higran section. In essence, the turnover of the Cretaceous foraminifera which defines the end of the Cretaceous is located one meter below the physical contact between the Shiranish and the Kolosh formations." @default.
• W2743029636 created "2017-08-17" @default.
• W2743029636 creator A5081191458 @default.
• W2743029636 date "2011-06-28" @default.
• W2743029636 modified "2023-09-30" @default.
• W2743029636 title "High Resolution Biostratigrahpy of the K/T Boundary in the Higran Section, Shaqlawa Area, Northern Iraq" @default.
• W2743029636 doi "https://doi.org/10.33899/earth.2011.5499" @default.
• W2743029636 hasPublicationYear "2011" @default.
• W2743029636 type Work @default.
• W2743029636 sameAs 2743029636 @default.
• W2743029636 citedByCount "3" @default.
• W2743029636 countsByYear W27430296362013 @default.
• W2743029636 countsByYear W27430296362014 @default.
• W2743029636 countsByYear W27430296362020 @default.
• W2743029636 crossrefType "journal-article" @default.
• W2743029636 hasAuthorship W2743029636A5081191458 @default.
• W2743029636 hasBestOaLocation W27430296361 @default.
• W2743029636 hasConcept C101991246 @default.
• W2743029636 hasConcept C108469399 @default.
• W2743029636 hasConcept C111368507 @default.
• W2743029636 hasConcept C112698675 @default.
• W2743029636 hasConcept C122792734 @default.
• W2743029636 hasConcept C12294951 @default.
• W2743029636 hasConcept C127313418 @default.
• W2743029636 hasConcept C144133560 @default.
• W2743029636 hasConcept C150117547 @default.
• W2743029636 hasConcept C151730666 @default.
• W2743029636 hasConcept C18903297 @default.
• W2743029636 hasConcept C2780129039 @default.
• W2743029636 hasConcept C2780142684 @default.
• W2743029636 hasConcept C2780368712 @default.
• W2743029636 hasConcept C61721801 @default.
• W2743029636 hasConcept C83042747 @default.
• W2743029636 hasConcept C86803240 @default.
• W2743029636 hasConceptScore W2743029636C101991246 @default.
• W2743029636 hasConceptScore W2743029636C108469399 @default.
• W2743029636 hasConceptScore W2743029636C111368507 @default.
• W2743029636 hasConceptScore W2743029636C112698675 @default.
• W2743029636 hasConceptScore W2743029636C122792734 @default.
• W2743029636 hasConceptScore W2743029636C12294951 @default.
• W2743029636 hasConceptScore W2743029636C127313418 @default.
• W2743029636 hasConceptScore W2743029636C144133560 @default.
• W2743029636 hasConceptScore W2743029636C150117547 @default.
• W2743029636 hasConceptScore W2743029636C151730666 @default.
• W2743029636 hasConceptScore W2743029636C18903297 @default.
• W2743029636 hasConceptScore W2743029636C2780129039 @default.
• W2743029636 hasConceptScore W2743029636C2780142684 @default.
• W2743029636 hasConceptScore W2743029636C2780368712 @default.
• W2743029636 hasConceptScore W2743029636C61721801 @default.
• W2743029636 hasConceptScore W2743029636C83042747 @default.
• W2743029636 hasConceptScore W2743029636C86803240 @default.
• W2743029636 hasIssue "1" @default.
• W2743029636 hasLocation W27430296361 @default.
• W2743029636 hasOpenAccess W2743029636 @default.
• W2743029636 hasPrimaryLocation W27430296361 @default.
• W2743029636 hasRelatedWork W125964381 @default.
• W2743029636 hasRelatedWork W2069513873 @default.
• W2743029636 hasRelatedWork W2094772595 @default.
• W2743029636 hasRelatedWork W2110931111 @default.
• W2743029636 hasRelatedWork W2902827787 @default.
• W2743029636 hasRelatedWork W3086786748 @default.
• W2743029636 hasRelatedWork W3142702035 @default.
• W2743029636 hasRelatedWork W3169335483 @default.
• W2743029636 hasRelatedWork W3205511388 @default.
• W2743029636 hasRelatedWork W2336483971 @default.
• W2743029636 hasVolume "11" @default.
• W2743029636 isParatext "false" @default.
• W2743029636 isRetracted "false" @default.
• W2743029636 magId "2743029636" @default.
• W2743029636 workType "article" @default.