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Composition and morphology of ferromanganese coatings on glacial erratics in Lydonia Canyon, United States East Coast

Geo-Marine Letters

By:
, , and
DOI: 10.1007/BF02233938

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Abstract

Ferromanganese coatings have been found on glacial erratics in Lydonia Canyon, off the United States northeastern coast. The coatings, which are about 17 ??m thick, consist of an outer manganese-rich layer which covers the top of the erratic, a middle transitional layer, and an internal iron-rich layer that encircles the entire surface of the erratic. Chemical analyses of the coatings, when compared with similar data on abyssal marine ferromanganese deposits, reveal comparable Mn/Fe ratios, higher P and Ti concentrations, and an order of magnitude less of Co, Ni, Cu, and most other metals. A comparison of the Lydonia Canyon coatings with desert varnishes reveals obvious chemical, mineralogical, and morphological differences. ?? 1985 Springer-Verlag.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Composition and morphology of ferromanganese coatings on glacial erratics in Lydonia Canyon, United States East Coast
Series title:
Geo-Marine Letters
DOI:
10.1007/BF02233938
Volume
5
Issue:
2
Year Published:
1985
Language:
English
Publisher location:
Springer-Verlag
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geo-Marine Letters
First page:
127
Last page:
133