Contribution à l'étude de la marge nord-ouest ibérique; analyse statistique et exoscopie appliquées aux sédiments crétacés du forage IPOD 398 D (Leg 47 B)  [Contribution to the study of the Northwest Iberian margin; statistical analysis and exoscopy applied to the Cretaceous deposits in IPOD 38D Well; Leg 47 B]

Alternate Title(s): Contribution to the study of the Northwest Iberian margin; statistical analysis and exoscopy applied to the Cretaceous deposits in IPOD 38D Well; Leg 47 B
Author(s): Pelras, Monique
Source: 255p. Institution: Université Pierre et Marie Curie, Paris VI, Paris, France
Note: In French. 8 p. refs. Doctoral dissertation
Summary: This study involves two original investigational methods, at least in this case: statistical analysis and exoscopy. The statistical analysis is a both descriptive and qualitative technique. Two complementary statistical analysis methods were used at the same time: a major component analysis and a classification into stable groups. Both techniques were applied on the one hand to dredge data (whole sediment) and on the other hand, to the sand fraction data. Exoscopy is a primarily qualitative method. The numerous quartz grains observed with a scanning electron microscope were taken from about thirty samples selected according to the results of the statistical an alysis. The results obtained through this method show, on the site scale, that sedimentation in Cretaceous time very much depended on two major processes of regional extent: tectonic events and hydrodynamic regime
Year of Publication: 1982
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 06 Petrology, Sedimentary; Atlantic Ocean; Biostratigraphy; Composition; Continental margin sedimentation; Cretaceous; Deep Sea Drilling Project; Detrital sedimentation; Europe; European Atlantic; Exoscopy; Foraminifera; Framework silicates; Galicia Spain; IPOD; IPOD Leg 47 B; IPOD site 398 D; Iberian Peninsula; Invertebrata; Mesozoic; Microfossils; Mineral composition; North Atlantic; Oceanography; Portugal; Principal components analysis; Processes; Protista; Quartz; Radiolaria; SEM data; Sedimentary rocks; Sedimentation; Silica minerals; Silicates; Southern Europe; Spain; Spearman analysis; Stable group classification; Statistical analysis; Stratigraphy; Structural controls
Record ID: 1985009611
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France

Similar Items