The Jack Hills are a range of hills in Mid West Western Australia. They are best known as the source of the oldest material of terrestrial origin found to date: zircons that formed around 4.4 billion years ago. These zircons have enabled ground-breaking research into the conditions on earth in the Hadean eon.
Read more about Jack Hills: Geography, Geology, Conservation
Famous quotes containing the words jack and/or hills:
“Jack and Jill
Went up the hill,
To fetch a pail of water;
Jack fell down,
And broke his crown,
And Jill came tumbling after.”
—Mother Goose (fl. 17th–18th century. Jack and Jill (l. 1–6)
“Fretted shadow on stumps
A vanishing husk
Of light . . . grey lumps
Of stone verge the hills with fears.
It is quickly dusk.”
—Allen Tate (1899–1979)