Shale
/ʃeɪl/noun
A type of sedimentary rock formed from clay or mud that has hardened over time.
Did you know?The word 'shale' is linked to the Old English 'sceald,' meaning 'to shed,' which hints at the rock's layered nature, representing cycles of death and rebirth in the Earth itself.
Etymological Timeline
Proto-Germanic
PGmc
*skaldīz
“A term related to the concept of shedding or shedding layers.”
Old English
OE
sceald
“To shed, which reflects the process of sediment accumulation.”
Middle English
ME
shale
“A term referring to layers of sediment, evolving from its Old English roots.”
Modern English
English
shale
“The established term for the hardened sedimentary rock we know today.”