Difference between revisions of "Concretion"
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== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | agglomerate; | + | agglomerate; concrétion (Fr.);concrecion (Esp.); concreção (Port.); Konkretion (Deut.); concretie (Ned.) |
== Additional Images == | == Additional Images == | ||
| Line 22: | Line 22: | ||
== Authority == | == Authority == | ||
| − | * | + | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 |
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | * ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | ||
| − | * | + | * Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997 |
* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | * ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 | ||
Revision as of 06:56, 24 July 2013
Description
In geology, concretion is an anomalous mass of mineral matter found in sandstone, clay, or other sedimentary rock. Concretions are form by the deposition of silica, calcite, gypsum, or other chemical compound. They are often found in concentric layers surrounding an original nucleus.
Synonyms and Related Terms
agglomerate; concrétion (Fr.);concrecion (Esp.); concreção (Port.); Konkretion (Deut.); concretie (Ned.)
Additional Images
'Devil's Bake Oven' at Mushroom Rock State Park
'Pulpit Rock' at Mushroom Rock State Park
Dakota Sandstone concretion
Dakota Formation sandstone concretions
Concretions
Authority
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998