Abstract
Summary Radiometric analysis indicates that a granular variety of glauconite, widespread on the Chatham Rise, is derived from late Tertiary sediments. Other forms of glauconite, associated with pumice, phosphorite nodules, and glacially‐transported erratic blocks, are of Quaternary age. These are quantitatively unimportant, and may have originated as a result of redistribution of components from the older glauconite.
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More From: New Zealand Journal of Marine and Freshwater Research
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