I think it is possible about 70 percent.

Gholamreza Fotoohi Rad

Same answer for the northern part (if it is the same type of rock) I think

Diatreme (volcanic vent): When hot material escapes from the interior of the Earth in an explosion, the vent of the volcano and the feeder pipe below it fill with breccia as the eruption wanes. The resulting structure is called a diatreme or volcanic vent. Many studies have clarified the mechanism of diatreme formation, as the study of the minerals and rocks contained in some diatremes has shown that they are formed only at great depths - about 100 km or more - within the upper mantle. Studies indicate that diatremes are formed by the melting of rocks that fall in their path by the rising gas-rich magma, where they eventually eject gases and fragments from the vent, and fragments from deep within the crust and mantle, with sometimes very high explosive energy. These eruptions may resemble the exhaust jet exiting from a huge inverted rocket on Earth, where it explodes rocks and gases into the atmosphere.

There is a diatreme in the legendary Kimberley Mines of South Africa, one of the largest diamond mines in the world. This diatreme is composed of peridotite, an ultramafic rock composed mostly of olivine and pyroxene. It also contains diamonds, which are formed from carbon under high pressure in the mantle, mixed with mantle fragments picked up by magma as it rose to the surface. This diatreme is seen as if a well had been drilled into the mantle to a depth of 300 km. The fragments picked up by the ascending magma provide the only direct evidence of the upper mantle material, which is mainly peridotite.