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Abstract
An area of about 22 000 km2 on the N Blake Plateau contains an estimated 2 billion tonnes of phosphorite concretions, and about 1.2 billion tonnes of mixed ferromanganese-phosphorite pavement. The phosphorite consists primarily of carbonate-fluorapatite, some calcite, minor quartz and other minerals. Drilling and other evidence show that the phosphorite is a lag derived from Miocene strata correlatable with phosphatic M Tertiary sediments on the continent. It has undergone variable cycles of erosion, reworking, partial dissolution and reprecipitation. Its present form varies from phosphatized carbonate debris, loose pellets, and pebbles, to continuous pavements, plates, and conglomeratic boulders. No primary phosphatization is currently taking place on the Blake Plateau.
Study Area
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Composition and origin of phosphorite deposits of the Blake Plateau |
| Year Published | 1980 |
| Language | English |
| Publisher | Society of Economic Paleontologists and Mineralogists |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 21 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | Marine phosphorites - Geochemistry, occurrence, genesis : Symposium at the 10th international congress on sedimentology, Jerusalem, July 1978, proceedings |
| First page | 117 |
| Last page | 137 |
| Conference Title | 10th International Congress on Sedimentology |
| Conference Location | Jerusalem, Israel |
| Conference Date | July 9-14, 1978 |
| Country | United States |
| Other Geospatial | Blake Plateau |
| Google Analytic Metrics | Metrics page |