black shale

noun

A dark, muddy rock, rich in sulfides and organic material.

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Meanings

nounblack shale (countable and uncountable, plural black shales)

plural black shales

  1. countableuncountablegeographyA dark, muddy rock, rich in sulfides and organic material.

Translations

Finnish musta savikivi
  • musta savikivitype of rock
Cite this entry
APA

black shale. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/black%20shale

MLA

“black shale.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/black%20shale. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “black shale,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/black%20shale.

Source: black shale on Wiktionary, CC BY-SA 4.0.