1. Compositional Variations and Genesis of Sandy-Gravel Ferromanganese Deposits from the Yōmei Guyot (Holes 431, 431A DSDP), Emperor Ridge
- Author
-
Nataly Zarubina, Maksim Blokhin, Evgenii Mikhailik, Pavel Mikhailik, and Alexander Khanchuk
- Subjects
Placer mining ,lcsh:QE351-399.2 ,010504 meteorology & atmospheric sciences ,Geochemistry ,Guyot ,010502 geochemistry & geophysics ,01 natural sciences ,Ferromanganese ,fe-mn placer ,0105 earth and related environmental sciences ,geochemistry ,geography ,geography.geographical_feature_category ,lcsh:Mineralogy ,Geology ,emperor ridge ,Geotechnical Engineering and Engineering Geology ,Mineral resource classification ,Diagenesis ,phase analysis ,Ridge ,Clastic rock ,yōmei guyot ,Sedimentary rock ,mineralogy - Abstract
This research presents results characterizing the mineral and chemical composition of ferromanganese (Fe-Mn) deposits from Yōmei Guyot (Holes 431 and 431A), recovered during the Deep-Sea Drilling Project (DSDP) Leg 55 R/V &ldquo, Glomar Challenger&rdquo, The Fe-Mn deposits are represented by sandy-gravel clasts. The mineral composition and bulk concentration of major and minor elements, as well as the distribution of rare earth elements and yttrium patterns in mineral fractions of Fe-Mn samples, showed that the deposits are composed of fragments of Fe-Mn hydrogenetic crusts and diagenetic nodules. The morphology of Fe-Mn clasts from Holes 431 and 431A DSDP, as well as a comparison with growth conditions of Fe-Mn deposits from N-W Pacific Guyots, allowed us to establish a Late Pliocene age for the formation of this Fe-Mn placer from Yōmei Guyot. Accumulations of ferromanganese clasts in a sedimentary unit led us to classify this geological body as a new mineral resource of the World Ocean.
- Published
- 2019