A xenolith ("foreign rock") is a rock fragment (country rock) that becomes enveloped in a larger rock during the latter's development and solidification. In geology, the term xenolith is almost exclusively used to describe inclusions in igneous rock entrained during magma ascent, emplacement and eruption. [1] .

xenolith, rock fragment within an intrusive igneous body that is unrelated to the igneous body itself. Xenoliths, which represent pieces of older rock incorporated into the magma while it was still fluid, may be located near their original positions of detachment or may have settled deep into the intrusion, if their density is greater.

2024年4月24日 · Xenoliths and xenocrysts provide valuable information about the geology of Earth's mantle. Scientists study the chemical properties of xenoliths to understand the depth at which they were formed. Many xenocrysts were created hundreds of kilometers within Earth, far below the deepest mines and wells. The information about the condition of the ...

2023年12月7日 · Xenoliths are foreign rock fragments caught up in an igneous rock. They can be from country rock, restite, or cognate and are important to geologists. Skip to content

Xenoliths, which represent pieces of older rock incorporated into the magma while it was still fluid, may be located near their original positions of detachment or may have settled deep into the intrusion, if their density is greater.There are three principal types of xenoliths:

Xenoliths that originated beneath thin, young continents are derived from above 150 km and are typically ~63% olivine, ~21% orthopyroxene, and ~16% garnet + clinopyroxene, and therefore are richer in Ca and Al. Many western U.S. xenoliths have been dated at 1.7 Ga.

One euro coin for scale. A xenolith (foreign rock) is a rock fragment which another rock surrounds. It happens most in igneous rock when magma is fluid enough to flow round more solid rock.

xenoliths. Crystals that are torn from the sides of magma pipes are called xenocrysts. As magma erupts or flows from the Earths surface, it is cooled by exposure to air or water.

Xenoliths are fragments of older rocks included in younger igneous rocks. Xenoliths form when magma migrates within the lithosphere incorporating pieces of other rocks within it. Xenoliths can be, for example, rocks encountered during magma ascent or fragments of the wall rocks of a magma chamber.

Xenoliths are different types of rock embedded in igneous rock. Xenoliths are torn from deep cracks, or pipes, in the Earths surface. Magma rises to the Earths surface through these pipes between the Earths crust and mantle.