Difference between revisions of "Tuffaceous limestone"
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== Description == | == Description == | ||
| − | A sedimentary [http://cameo.mfa.org/materials/fullrecord.asp?name=limestone limestone] that contains up to 50 percent volcanic tuff ([http://cameo.mfa.org/materials/fullrecord.asp?name=ash | + | A sedimentary [http://cameo.mfa.org/materials/fullrecord.asp?name=limestone limestone] that contains up to 50 percent volcanic tuff ([http://cameo.mfa.org/materials/fullrecord.asp?name=ash%20%28residue%29 ash] and cinders). Tuffaceous limestone is often light or dark green or brown with some gray and blue varieties. It can have predominant grains of [http://cameo.mfa.org/materials/fullrecord.asp?name=calcite calcite] with small amounts of [http://cameo.mfa.org/materials/fullrecord.asp?name=ferric%20oxide iron oxide], [http://cameo.mfa.org/materials/fullrecord.asp?name=quartz quartz], [http://cameo.mfa.org/materials/fullrecord.asp?name=plagioclase plagioclase], and [http://cameo.mfa.org/materials/fullrecord.asp?name=glass glass] shards. In Egypt, green tuffaceous limestone was mined in the early Dynastic period from Gebel Manzal el-Seyl (Aston et al 2000). |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 06:42, 24 July 2013
Description
A sedimentary limestone that contains up to 50 percent volcanic tuff (ash and cinders). Tuffaceous limestone is often light or dark green or brown with some gray and blue varieties. It can have predominant grains of calcite with small amounts of iron oxide, quartz, plagioclase, and glass shards. In Egypt, green tuffaceous limestone was mined in the early Dynastic period from Gebel Manzal el-Seyl (Aston et al 2000).
Synonyms and Related Terms
tuffa; calc-tufa; calc-tuff; calcareous tufa; tufa limestone; Kalktuff (Deut.)
Additional Information
B.Aston, J.Harrell, I.Shaw, "Stone" in Ancient Egyptian Materials and Technology, P.Nicholson, I.Shaw (eds.), Cambridge University Press, 2000, p. 60-62.