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greensand

   Also found in: Encyclopedia, Wikipedia 0.02 sec.
green·sand  (grnsnd)
n.
A sand or sediment having a dark greenish color caused by the presence of glauconite.
greensand [ˈgriːnˌsænd]
n
(Earth Sciences / Geological Science) an olive-green sandstone consisting mainly of quartz and glauconite
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.greensand - an olive-green sandstone containing glauconite
sandstone - a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)


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But now we may read in the Supplement to Lyell's 'Manual,' published in 1858, clear evidence of the existence of whales in the upper greensand, some time before the close of the secondary period.
The Origin of Species by Darwin, Charles View in context
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