Matches in SemOpenAlex for { <https://semopenalex.org/work/W1983408965> ?p ?o ?g. }
Showing items 1 to 55 of
55
with 100 items per page.
- W1983408965 endingPage "289" @default.
- W1983408965 startingPage "279" @default.
- W1983408965 abstract "The present study is focused on the reconstruction and interpretation of the paleoenvironmental conditions that prevailed during the deposition of the Middle Eocene deposits of Northern Somalia by means of the ostracod assemblages distinguished. Quantitative analyses of 75 ostracod species, recognized in 36 ostracod-bearing samples from the study area, has revealed six types of assemblages (a, b1, b2, b3, b+c, c), obtained by applying Q-mode cluster analysis based on the Jaccard coefficient of similarity (the complete linkage method). These types represent, from older to younger, the Thracella indica Assemblage Zone (type b1; middle Lutetian), the Paijenborchellina reticulata-Paijenborchellina pustulata Assemblage Zone (type b2; middle Lutetian), the Hornibrookella moosae Assemblage Zone (type b3; middle Lutetian), the Paragrenocythere dhofarensis somaliensis Assemblage Zone (type a; late Lutetian), the Asymmetricythere tricostata Assemblage Zone (type b+c; late Lutetian to Bartonian) and the Neocyprideis rotundata Assemblage Zone (type c; late Lutetian to Bartonian), respectively. Q-mode analysis based on the extraction of latent roots and vectors of a non-parametric matrix produced by the Spearman correlation coefficient, led to the conclusion that the most effective environmental factors in the study area are: salinity (1st latent vector), substrate (2nd latent vector), dissolved oxygen of water (3rd latent vector), turbidity currents (4th latent vector). The general paleoenvironmental conditions prevailing during the deposition of the Middle Eocene strata in Northern Somalia are discussed in details. La présente étude est consacrée à l'interprétation et à la reconstitution des paléoenvironnements qui ont présidé au dépôt des sédiments d'âge éocène moyen du Nord de la Somalie à partir de l'analyse quantitative multivariée des 75 espèces d'Ostracodes reconnues dans les échantillons étudiés. Six associations différentes (a, b1, b2, b3, b+c, c) ont été individualisées. A savoir, de la plus ancienne à la plus jeune: l'association à Thracella indica (type b1), celle à Paijenborchellina reticulata-Paijenborchellina pustulata (type b2) et celle à Hornibrookella moosae (type b3), toutes trois d'âge lutétien moyen; l'association à Paragrenocythere dhofarensis somaliensis (type a), d'âge lutétien terminal; l'association à Asymmetricythere tricostata Assemblage (type b+c) et celle à Neocyprideis rotundata (type c), toutes deux correspondant à la limite Lutétien-Bartonien. Les facteurs paléoenvironnementaux les plus influents sont la salinité, la nature du substrat, le taux d'oxygène dissous et la turbidité des courants." @default.
- W1983408965 created "2016-06-24" @default.
- W1983408965 creator A5010613960 @default.
- W1983408965 creator A5046362271 @default.
- W1983408965 creator A5073850995 @default.
- W1983408965 date "2001-12-01" @default.
- W1983408965 modified "2023-10-02" @default.
- W1983408965 title "Middle eocene ostracoda from Northern Somalia (paleoenvironmental appraisal)" @default.
- W1983408965 cites W1008738026 @default.
- W1983408965 cites W2012749755 @default.
- W1983408965 cites W2140631395 @default.
- W1983408965 cites W2797361705 @default.
- W1983408965 doi "https://doi.org/10.1016/s0035-1598(01)90107-2" @default.
- W1983408965 hasPublicationYear "2001" @default.
- W1983408965 type Work @default.
- W1983408965 sameAs 1983408965 @default.
- W1983408965 citedByCount "6" @default.
- W1983408965 countsByYear W19834089652016 @default.
- W1983408965 countsByYear W19834089652017 @default.
- W1983408965 countsByYear W19834089652020 @default.
- W1983408965 crossrefType "journal-article" @default.
- W1983408965 hasAuthorship W1983408965A5010613960 @default.
- W1983408965 hasAuthorship W1983408965A5046362271 @default.
- W1983408965 hasAuthorship W1983408965A5073850995 @default.
- W1983408965 hasConcept C127313418 @default.
- W1983408965 hasConcept C151730666 @default.
- W1983408965 hasConcept C2776077807 @default.
- W1983408965 hasConcept C2777299769 @default.
- W1983408965 hasConcept C2777798969 @default.
- W1983408965 hasConceptScore W1983408965C127313418 @default.
- W1983408965 hasConceptScore W1983408965C151730666 @default.
- W1983408965 hasConceptScore W1983408965C2776077807 @default.
- W1983408965 hasConceptScore W1983408965C2777299769 @default.
- W1983408965 hasConceptScore W1983408965C2777798969 @default.
- W1983408965 hasIssue "4" @default.
- W1983408965 hasLocation W19834089651 @default.
- W1983408965 hasOpenAccess W1983408965 @default.
- W1983408965 hasPrimaryLocation W19834089651 @default.
- W1983408965 hasRelatedWork W10666912 @default.
- W1983408965 hasRelatedWork W1966859918 @default.
- W1983408965 hasRelatedWork W2150849968 @default.
- W1983408965 hasRelatedWork W2227698996 @default.
- W1983408965 hasRelatedWork W2347722518 @default.
- W1983408965 hasRelatedWork W2357183728 @default.
- W1983408965 hasRelatedWork W2366391050 @default.
- W1983408965 hasRelatedWork W2409837755 @default.
- W1983408965 hasRelatedWork W2948034762 @default.
- W1983408965 hasRelatedWork W4213363060 @default.
- W1983408965 hasVolume "44" @default.
- W1983408965 isParatext "false" @default.
- W1983408965 isRetracted "false" @default.
- W1983408965 magId "1983408965" @default.
- W1983408965 workType "article" @default.