Accession Number:

ADA000019

Title:

Mechanical Twinning in Experimentally and Naturally Deformed Hornblende.

Descriptive Note:

Environmental research papers,

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s):

• Rooney,Thomas P.
• Gavasci,Anna T.
• Riecker,Robert E.

Report Date:

1974-08-01

Pagination or Media Count:

20.0

Abstract:

Lamellar features in naturally deformed hornblende are identical to -1,01 mechanical twinning produced experimentally. Although plastic deformation features in amphiboles from tectonities are probably rare, where present, twinning may be a useful indicator of principal stress directions. Author

Descriptors:

• *ROCK FORMING MINERALS
• PLASTIC DEFORMATION
• STRESSES
• X RAY DIFFRACTION
• ORIENTATION(DIRECTION)
• ELECTRON MICROSCOPY
• TWINNING(CRYSTALLOGRAPHY)

Subject Categories:

• Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE