National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

A Comparison of the Chemistry and Mineralogy with the Distribution and Physical Aspects of Marine Manganese Concretions of the Southern Oceans.

PB177287

Publication Date	1967
Personal Author	Grant, J. B.
Page Count	109
Abstract	An extensive deposit of ferromanganese concretions has been investigated in the Southern Ocean around Antarctica, a region of particular interest in that it contains most of the parameters thought to be of importance in concretion formation. The physical and chemical properties of 93 concretions from 62 stations have been analyzed for possible interpretations as to the elemental source and the distributional characteristics as possible responses to respective parameters. It was found that four classes of concretionary types best represent the physical characteristics of concretions recovered within this area and that their morphology may be representative of the rate of formation and the proximity to the source of elemental constituents. It is suggested that the major source of concentrated elements in Southern Ocean ferromanganese concretions is submarine volcanism, with the dominant volcanism occurring along the Pacific-Antarctic Ridge. There is some evidence that connects periodic concretion growth and distribution characteristics to possible glacial and inter-glacial periods. (Author)
Keywords	Marine geology Manganese Pacific Ocean Antarctic regions Physical properties Volcanoes Deposits Chemical properties Iron compounds Quantitative analysis X-ray spectroscopy Glaciers Geologic age determination Maps Theses
NTIS Subject Category	48F - Geology & Geophysics 47C - Physical & Chemical Oceanography
Corporate Authors	Florida State Univ., Tallahassee. Sedimentological Research Lab.
Document Type	Thesis
Title Note	Master's thesis.
NTIS Issue Number	196807

A Comparison of the Chemistry and Mineralogy with the Distribution and Physical Aspects of Marine Manganese Concretions of the Southern Oceans.

A Comparison of the Chemistry and Mineralogy with the Distribution and Physical Aspects of Marine Manganese Concretions of the Southern Oceans.
PB177287

Publication Date	1967
Personal Author	Grant, J. B.
Page Count	109
Abstract	An extensive deposit of ferromanganese concretions has been investigated in the Southern Ocean around Antarctica, a region of particular interest in that it contains most of the parameters thought to be of importance in concretion formation. The physical and chemical properties of 93 concretions from 62 stations have been analyzed for possible interpretations as to the elemental source and the distributional characteristics as possible responses to respective parameters. It was found that four classes of concretionary types best represent the physical characteristics of concretions recovered within this area and that their morphology may be representative of the rate of formation and the proximity to the source of elemental constituents. It is suggested that the major source of concentrated elements in Southern Ocean ferromanganese concretions is submarine volcanism, with the dominant volcanism occurring along the Pacific-Antarctic Ridge. There is some evidence that connects periodic concretion growth and distribution characteristics to possible glacial and inter-glacial periods. (Author)
Keywords	Marine geology Manganese Pacific Ocean Antarctic regions Physical properties Volcanoes Deposits Chemical properties Iron compounds Quantitative analysis X-ray spectroscopy Glaciers Geologic age determination Maps Theses
NTIS Subject Category	48F - Geology & Geophysics 47C - Physical & Chemical Oceanography
Corporate Authors	Florida State Univ., Tallahassee. Sedimentological Research Lab.
Document Type	Thesis
Title Note	Master's thesis.
NTIS Issue Number	196807