
1) Biannual journal 2) English limestone 3) French word used in English 4) Jurassic division 5) Jurassic subdivision 6) Multilingual journal
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fossil-bearing limestone
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http://phrontistery.info/l.html

• (n.) The lowest of the three divisions of the Jurassic period; a name given in England and Europe to a series of marine limestones underlying the Oolite. See the Chart of Geology.
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http://thinkexist.com/dictionary/meaning/lias/

Greyish rock which splits easily into slabs.
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http://www.castlesontheweb.com/glossary.html

Greyish rock which splits easily into slabs.
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http://www.encyclo.co.uk/local/20018

<geology> The lowest of the three divisions of the Jurassic period; a name given in England and Europe to a series of marine limestones underlying the Oolite. ... Origin: Cf. F. Lias, fr. Liais sort of limestone, OF. Also liois; perh. Of Celtic origin, cf. Armor. Liach, leach, a stone, Gael. Leac, W. Llech. Cf. Cromlech. ... Source: Websters ...
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Library Information Access System
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Li'as (lī'
a s)
noun [ Confer French
lias , from
liais sort of limestone, Old French also
liois ; perhaps of Celtic origin, confer Armor.
liach ,
leach , a stone, Gael.
leac , W.
llech . Confer
Cromlech .]
(Geol.) The lowe...
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http://www.encyclo.co.uk/webster/L/36

In geology, the name lias is given to that series of strata, consisting principally of thin layers of limestone imbedded in thick masses of blue argillaceous clay, lying at the base of the Oolitic or Jurassic series, and above the Triassic or New Red Sandstone. The formation is highly fossiliferous, ammonites being found in such quantities and vari...
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http://www.probertencyclopaedia.com/browse/HL.HTM
No exact match found.