Sun Exp

[redglenys]

19d a dark fine-grained laminated sedimentary rock [5] s?a?ee i thought it was shale other half says slate

[factor-fiction]

Shale

[factor-fiction]

Definition from one dictionary:
shale [ʃeɪl] n- (Earth Sciences / Geological Science) a dark fine-grained laminated sedimentary rock formed by compression of successive layers of clay-rich sediment

[redglenys]

thank you . slate is not sedimentary is it

[Baldric]

say 5, show 6 ???

[redglenys]

thank you again

[Canary42]

Slate is metamorphic rock (from a shale-like sedimentary one)

[paddywak]

Just to stir the pot


slate1
n a fine-grained argillaceous rock which by regional metamorphism has developed a cleavage along close-spaced planes independent of the bedding, usu a dull blue, grey, purple, or green; a slab of this material (or a substitute) for roofing, or for writing on with chalk; a preliminary list (eg of political candidates; esp ); slate-colour.
adj of slate; slate-coloured, dull dark blue.
vt to cover with slate or slates; to enter on a slate; to clear (hide) of fine hair with a slater; to enter on a list; to note down for nomination or appointment (); to propose; to schedule ().
[OFr esclate; cf slat1]
slated adj covered with slates.
slater n a person who covers roofs with slates; a tool with a slate blade for removing fine hair from hides; a woodlouse (, and ).
slatiness n.
slating n covering with slates; a covering of slates; materials for slating.
slaty adj of or like slate.
slate axe n a slater's sax.
slate club n an informally organized communal fund to which members contribute regularly, as insurance against hard times or savings towards eg Christmas expenses.
slate-coloured adj dark greenish or bluish grey.
slate-grey or slate-gray adj of a light slate colour.
slate pencil n a cut or turned stick of soft slate, compressed slate powder, or pyrophyllite, for writing on slate.
slate-writer n.
slate-writing n in spiritualism, the mysterious process of producing writing on a covered slate.
slaty cleavage n () fissility like that of slate along planes independent of bedding.
a clean slate see under clean.
a slate loose () a slight mental derangement.
on the slate () on credit.
wipe the slate clean to allow a person to make a fresh start in a job, relationship, etc by ignoring past mistakes, crimes, etc.

\u00A9 Chambers Harrap Publishers Ltd: The Chambers Dictionary 2003; The Chambers Thesaurus 2004