ΦΥΣΙΚΑ, ΜΗΧΑΝΙΚΑ ΚΑΙ ΧΗΜΙΚΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΩΝ ΤΡΙΑΔΙΚΩΝ ΨΑΜΜΙΤΩΝ ΤΗΣ ΚΟΙΛΑΔΑΣ YORK-ΑΓΓΛΙΑΣ

THE TRIASSIC SANDSTONES AQUIFER OF THE VALLEY OF YORK-ENGLAND WAS EXAMINED FROM ENGINEERING GEOLOGY AND HYDROGEOLOGICAL POINT OF VIEW. PETROGRAPHIC ANALYSISREVEALS THAT THE MATERIAL RANGES FROM FRIABLE TO WELL-CEMENTED, DEPENDING ON THE CEMENTATION (SECONDARY QUARTZ OR CARBONATES). DETAILED GRAIN-SIZE ANALYSISCLASSIFIES THE SANDSTONES INTO THE SAND AND MUDDY CATEGORIES OF FOLK'S SYSTEM. OF THE CLAY MINERALS THE ILLITE-NONTNORILLONITE TYPE IS MORE ABUNDANT. THE RANGE OF APPARENT POROSITY IS BETWEEN 17% AND 34% WITH A MEAN VALUE OF 24%. A SERIES OF PERMEAMETERS HAVE BEEN DEVELOPED. THE PERMEABILITIES RANGE FROM 9X10-8 TO 3.64.10-3 CM/SEC. MECHANICAL PROPERTIES OF THE MATERIAL SUCH AS UNIAXIALCOMPRESSIVE STRENGTH, TENSILE STRENGTH, DYNAMIC YOUNG'S MODULUS AND ULTRASONIC VELOCITY ARE PRESENTED AND DISCUSSED. ALSO A DETAILED GEOCHEMICAL ANALYSIS HAS BEEN UNDERTAKEN. A COMPARISON BETWEEN FIELD AND LABORATORY TRANSMISSIVITY DATA GIVES TF/TL RATIOS RANGING FROM 2:1 TO 27:1. COMPUTER PROGRAMS FOR ALL THEEXAMINED PROPERTIES HAVE BEEN USED.

Grantor dc:publisher

Institutes outside Greece

Year dc:date

1974

Authors dc:creator

• Koukis, George
• Κούκης, Γεώργιος

• ΜΗΧΑΝΙΚΗ ΠΕΤΡΩΜΑΤΩΝ
• Τεχνική γεωλογία
• ΥΔΡΟΓΕΩΛΟΓΙΑ ΒΡΑΧΩΔΩΝ ΣΧΗΜΑΤΙΣΜΩΝ
• ΦΥΣΙΚΑ ΚΑΙ ΜΗΧΑΝΙΚΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ
• ΧΗΜΙΚΗ ΣΥΣΤΑΣΗ ΠΕΤΡΩΜΑΤΩΝ
• Ψαμμίτης
• Engineering geology
• PHYSICAL AND MECHANICAL PROPERTIES
• Sandstone

Language dc:language

eng

Identifier

10.12681/eadd/0293

OAI identifier oai:identifier

oai:10442/0293