Mélange within subduction–accretion complex rocks of Fredriksen Island, South Orkney Islands

Storey, B.C.; Meneilly, A.W.. 1983 Mélange within subduction–accretion complex rocks of Fredriksen Island, South Orkney Islands. Geological Magazine, 120 (6). 555-566. https://doi.org/10.1017/S0016756800027710

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Official URL: http://dx.doi.org/10.1017/S0016756800027710

Abstract/Summary

Summary. A m´lange on Fredriksen Island, South Orkney Islands, is part of a Mesozoic subduction- accretion complex which formed along the western, Pacific side of Gondwana. It consists of a chaotic arrangement of irregular sized blocks, up to 8 m across, of basic pillow lava, chert, felsite and epiclastic sandstone in a pervasively sheared cataclastic matrix. Inclusions are typically lozenge-shaped and are characteristic of a tectonic m´lange. As the m´lange incorporates both possible ocean floor material that was accreted on to the continental margin and inner slope basin sediments it probably formed beneath the trench-slope basin along a shear zone at a high level in the subduction complex.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1017/S0016756800027710
ISSN:	0016-7568
NORA Subject Terms:	Earth Sciences
Date made live:	10 Jul 2019 08:06 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/524241

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1017/S0016756800027710

ISSN:

0016-7568

NORA Subject Terms:

Earth Sciences

Date made live:

10 Jul 2019 08:06 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/524241