X
MOV File
Online Collections

shale


Details
Term Type

Art & Architecture Thesaurus

Preferred Term

shale

Details

Argillaceous sedimentary rock formed by the compaction of clay, silt, or mud; it may be gray, red, brown, or black. It is finely laminated and weak along planes allowing the rock to split easily.

Variations

shales

Related Events
Related People
Related Literature
Related Terms
Related Artworks
Media
IMLS logoNEA logoNEH logo

The Portland Art Museum’s Online Collections site is brought to you thanks to support provided by the State of Oregon through its second Culture, History, Arts, Movies, and Preservation funding program and generous awards from the Institute of Museum and Library Services, the National Endowment for the Humanities, and the National Endowment for the Arts.