spicular chert

A Dictionary of Earth Sciences | 1999 | Copyright

spicular chert A very fine-grained siliceous sedimentary rock, the silica originating from the accumulation of sponge (Porifera) spicules. Sponge spicules can be an important source of biogenic silica in shelf-sea environments. See CHERT.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

AILSA ALLABY and MICHAEL ALLABY. "spicular chert." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 10 Feb. 2010 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "spicular chert." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 10, 2010). http://www.encyclopedia.com/doc/1O13-spicularchert.html

AILSA ALLABY and MICHAEL ALLABY. "spicular chert." A Dictionary of Earth Sciences. 1999. Retrieved February 10, 2010 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-spicularchert.html

Learn more about citation styles

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

SPONGES FROM THE PARK CITY FORMATION (PERMIAN) OF WYOMING
Magazine article from: Journal of Paleontology Rigby, J Keith; Boyd, Donald W January 1, 2004 700+ words ...region. The evidence is provided by spicular chert, long recognized as a common lithology...for at least half the silica in the chert. Faunas of the stratigraphic units...of dark shale, phosphorite, and chert, intertongue in such a way that...
Llandovery Secuicollactinae and Rotasphaeridae (radiolaria) from the Cape...
Magazine article from: Journal of Paleontology MacDonald, Eugene W July 1, 1998 700+ words ...Island, allow the distinction between the spicular haplentactinid subfamily Secuicollactinae...addition to acknowledging Secuicollacta as a spicular radiolarian, two new genera of Secuicollactinae...differentiated from member A by its higher chert content and less shale, with the shale...

For more facts and information, see all related premium articles

Related entries from encyclopedias, dictionaries, and thesauruses

spicular chert
Book article from: A Dictionary of Earth Sciences spicular chert A very fine-grained siliceous sedimentary rock , the silica originating from the accumulation of sponge ( Porifera ) spicules . Sponge spicules can be an important source of biogenic silica in shelf-sea environments. See CHERT .

Find thousands of answers for hundreds of subjects at Smart QandA .

All answers verified by trusted sources at Encyclopedia.com

Try Smart QandA now!

For students and teachers!

Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including:

Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including: