Publication Date:
2021-03-29
Description:
The suevitic Onaping Formation overlies
the layered Main Mass of the
1.85Ga Sudbury Igneous Complex
(SIC) of the Sudbury Impact Structure,
Ontario. The Formation consists of
four Members, namely from top to
bottom, the Black, the Green, the
Gray and the Basal. Post-impact NWSE
shortening during the Penokean
Orogeny (ca. 1.9–1.75 Ga) affected the
Onaping Formation and led to the
lobate shape of the SIC in plan view.
In order to investigate the possible fold
origin of the NE-lobe of the SIC, a
field-based structural analysis of the
Onaping Formation was conducted in
the Frenchman Lake area. The analysis
is based on structural measurements
at 580 stations and encompasses the
orientation of mineral shape fabrics as
well as their intensity. In addition to
these quantities, lithological variation
and metamorphic overprint of the Onaping
Formation was examined. Special
attention was paid thereby to the Green
Member since previous workers stated
that it forms a continuous unit at the
base of the Black Member...
Description:
conference
Keywords:
551
;
VKB 280
;
VKB 295
;
VAE 140
;
VEV 127
;
VKA 200
;
Impaktgesteine {Petrologie}
;
Metamorphe Komplexe, Nordamerika {Petrologie}
;
Gesteinsdeformation {Strukturgeologie}
;
Ontario {Geologie}
;
Gefügekunde der Gesteine
;
Sudbury 〈Ontario. Region〉
;
Mehrfachringbassin
;
Proterozoikum
;
Impaktmetamorphes Gestein
;
Suevit
;
Deformation 〈Geologie〉
Language:
German
Type:
anthologyArticle
,
publishedVersion
Format:
application/pdf
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