Shale, of Germanic origin, is a unique and distinctive given name derived from the Old German word 'scel', meaning 'shadow'. It was popularized during the Middle Ages as a nickname for those with dark complexions or hair. The name Shale gained prominence in English-speaking countries in the late 20th century, likely influenced by its geological association with shale rock formations.
The name Shale experienced a notable spike in popularity between 1997 and 1999, with seven or more births each year during this period. However, it appears to have been less common both before and after these years, as indicated by the fewer than six births recorded annually from 1972 up until 1996, and again from 2002 onwards.