Accession Number : ADA955011

Title :   Olivine Shear Strength at High Pressure and Room Temperature.

Descriptive Note : Environmental research papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA

Personal Author(s) : Riecker,R. E. ; Seifert,K. E.

Report Date : JUN 1964

Pagination or Media Count : 9

Abstract : The shear strength of olivine (forsterite) varies from 1.77 kb at 5.5 kb confining pressure to 15.2 kb at 50 kb confining pressure in room temperature shearing tests at strain rates from 1/sec to .001/sec. Extreme grain granulation, increased undulatory extinction, diffuse X-ray patterns and refractive index reductions up to 0.030 are found in sheared pellets. Extreme microfracturing and absence of recrystallization or gliding indicate predominantly brittle behavior.

Descriptors :   BEHAVIOR, BRITTLENESS, DIFFUSE REFLECTION, EXTINCTION, GLIDING, HIGH PRESSURE, OLIVINE, PATTERNS, RECRYSTALLIZATION, REDUCTION, REFRACTIVE INDEX, ROOM TEMPERATURE, SHEAR STRENGTH, STRAIN RATE, X RAYS

Subject Categories : Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE