Anisotropy of magnetic susceptibility in the Scaglia Rossa pelagic limestone

Details Anisotropy of magnetic susceptibility in the Scaglia Rossa pelagic limestone Anisotropy of magnetic susceptibility in the Scaglia Rossa pelagic limestone

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987e%26psl..82..349l&link_type=abstract

Earth and Planetary Science Letters, Volume 82, Issue 3-4, p. 349-356.

Computer Science

18

Scientific paper

During folding of the Scaglia Rossa limestone in Umbria, Italy, deformation was mainly accommodated by pressure solution cleavage. Fossils between the cleavage planes appear visibly undeformed, yet the limestone possesses a weak magnetic fabric. The maximum and intermediate principal axes of the magnetic anisotropy ellipsoid define a distinct magnetic foliation plane within which a weak concentration of the maximum axes forms a magnetic lineation. Neither of these features is of sedimentary origin. Results from a slumped outcrop, where bedding and a cleavage induced by overburden compaction have different attitudes, show that the magnetic foliation is caused by the compaction. Comparisons with field-derived structural data suggest that the magnetic lineation was produced tectonically during deformation of the Apennine fold belt.

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