xenolith

IPA: zɛnʌɫɪθ

(geology) Any piece of rock having a different origin to that of the igneous rock in which it is found.

Examples of "xenolith" in Sentences

"Unless one got carried to the surface as a xenolith!"
There are mafic xenolith intrusions in the granite in some areas.
Xenoliths of peridotite are common in kimberlite and in some basalt.
The odds against one of them getting picked up as a xenolith are probably astronomical.
- A fragment (or xenolith) of well mineralized intrusive within barren granodiorite was observed in drill hole MX07-03;
- This diamond discovery was from a multi-phased xenolith-bearing lamprophyre dyke system, approximately 6 metres wide in its surface exposure.
Usurped the subtlety, the vulnerability of the egg and ham wedding, the pepper xenolith stood firm, yelled to the other flavors and claimed victory, zero-sum taste diplomacy.
this strikes me as patently false! known direct samples of the mantle at or near the moho are at slow spreading ridges (where both serpentinite and unhydrous mantle rocks are found) and by xenolith (to my knowledge, no serpentinite xenolith has ever been described).
- A fragment (or xenolith) of well mineralized intrusive within barren granodiorite was observed in drill hole MX07-03; - Disseminated molybdenite has recently been observed in intrusive rocks at the 805 mine level, currently below the Z zone described previously; and, - Strong quartz stockwork with molybdenite in biotite hornfels has been observed adjacent to the Ethel zone (Drill Hole MX07-01).