volcanic pipe

American  

[vahl-kan-ik pahyp] / vɑlˈkæn ɪk ˈpaɪp /

noun

1. Geology. a cylindrical or carrot-shaped conduit formed vertically beneath a volcano by magma emerging through the earth's crust up to the surface, eventually becoming filled with solidified magma and older rock fragments and noted for being the source of more commercial diamonds than any other geologic feature on earth.

---

volcanic pipe Scientific  

1. A vertical conduit below a volcano through which magma has passed and that has become filled with solidified magma, volcanic breccia, and fragments of older rock.

---

Example Sentences

See Examples For:

volcanic pipe

A diamond, the locksmith reminds himself, is only a piece of carbon compressed in the bowels of the earth for eons and driven to the surface in a volcanic pipe.

From "All the Light We Cannot See" by Anthony Doerr

Either guarding the volcanic pipe or working in it.

From The Flaming Mountain by Harold L. (Harold Leland) Goodwin

At Ruby Hill near Bingara they were found in a breccia filling a volcanic pipe.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" by Various

A shelter had been erected on one side of the volcanic pipe.

From The Flaming Mountain by Harold L. (Harold Leland) Goodwin

Only a bare handful even knew that the diamonds occurred only in a small volcanic pipe on the western slope.

From The Flaming Mountain by Harold L. (Harold Leland) Goodwin