Publication Date:
2021-03-29
Description:
The anisotropy of magnetic susceptibility
(AMS) is a time-efficient method to
describe crystallographic preferred orientations
of rocks and has been applied
in a wide field of sedimentary, metamorphic
and magmatic geology. The method, however, suffers from limitations
which mainly result from the
interference of diamagnetic, paramagnetic
and ferromagnetic fabrics (de Wall
2005) — the term ferromagnetism is
used in a wider sense here, including e.g.
ferrimagnetism. The AMS is an integral
parameter which describes a crystallographic
preferred orientation as an ellipsoid.
The quantitative correlation of
the AMS with the crystallographic preferred
orientations should help to allow
a closer view at the applicability and the
limitations of the AMS analysis (see also
Schmidt et al. 2006 a, b)...
The results of this study are based
on a large variety of fabric types of
carbonate-mica marbles and mylonites,
i.e. varying mica content, grain sizes,
grain shapes, types and intensities of
the crystallographic preferred orientation.
The presented first correlations of
the AMS and CPO for the single mineral
phases in general demonstrate a good
matching. Regarding the comparison of
texture types and the AMS, limitations
are possible. While single c-axis maxima
and girdle-like c-axis distributions
can be also distinguished by the AMS,
it is obvious that distinguishing between
these types and the double c-axis type
is not possible at the present stage.
Description:
conference
Keywords:
551
;
TOT 310
;
VKA 200
;
VAE 140
;
VEF 200
;
VER 200
;
VKB 270
;
VAE 120
;
Gesteinsmagnetismus {Geophysik}
;
Gefügekunde der Gesteine
;
Gesteinsdeformation {Strukturgeologie}
;
Italien {Geologie}
;
Namibia {Geologie}
;
Produkte mechanischer Deformation {Petrologie}
;
Methodik {Strukturgeologie}
;
Apuaner Alpen
;
Damara Orogen
;
Karbonatgestein
;
Deformation 〈Geologie〉
;
Magnetische Suszeptibilität
;
Kristallorientierung
;
Korrelationsanalyse
Language:
German
Type:
anthologyArticle
,
publishedVersion
Format:
application/pdf
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