Origin of kimberlites and related magmas

Origin of kimberlites and related magmas - ScienceDirect

Abstract. Rare earth fractionation in kimberlites implies that they were produced by partial melting in the presence of residual garnet, in accordance with the ...

Origin of kimberlites and related magmas - ScienceDirect.com

Abstract. Rare earth fractionation in kimberlites implies that they were produced by partial melting in the presence of residual garnet, in accordance with the ...

AN HYPOTHESIS FOR THE ORIGIN OF KIMBERLITE 51

Kimberlites are characteristically associated with a suite of mafic and ultramafic xenoliths whose mineralogy indicates an origin within the upper mantle.

Kimberlite eruption | Volcanic Magma, Diamonds & Geology

Kimberlite eruption, small but powerful volcanic eruption caused by the rapid ascent of kimberlites ... Introduction References & Edit History Related Topics.

Petrogenesis of Kimberlites and Related Magmas - NASA ADS

Thus the formation of kimberlite source regions is believed to arise from subduction of differentiated oceanic lithosphere into the transition zone of the ...

Deep mantle origin of kimberlite magmas revealed by neon isotopes

Based on the pressure and temperature stability of diamonds in the Earth, kimberlite magma is thought to be derived from depths of at least 150 ...

Diamonds | Volcano World | Oregon State University

Upper mantle xenoliths are found in some kimberlite and provide clues to the magma's origin. The source depth for kimberlite magmas is estimated at 200 km ...

Olivine in Kimberlites: Magma Evolution from Deep Mantle to Eruption

In this contribution, we review and evaluate the following: (1) the widely accepted notion that kimberlite olivine has two distinct origins—xenocrystic and ...

Kimberlite - Wikipedia

Kimberlite pipes are the most important source of mined diamonds today. The consensus on kimberlites is that they are formed deep within the mantle. Formation ...

Kimberlite ascent by assimilation-fuelled buoyancy - PubMed

Kimberlite magmas have the deepest origin of all terrestrial magmas and are exclusively associated with cratons. During ascent, they travel ...

What are Kimberlites? - Kansas Geological Survey

What are Kimberlites? Unlike most of the surface rocks in Kansas, which are sedimentary in origin, kimberlite is an igneous rock, formed from the cooling of ...

Derivation of Lamproites and Kimberlites from a Common Evolving ...

S12). This evidence rules out the possibility of a young (i.e. Phanerozoic) subduction-related input to the 'transitional kimberlite' source, such as the ...

Geodynamic and Isotopic Constraints on the Genesis of Kimberlites ...

Magmas forming the Kaavi-Kupio kimberlites may have formed from an upwelling mantle source similar to PREMA modified by increasing incorporation ...

The nature of kimberlite melts, rocks and magmas

of suites of associated kimberlites (Harris et al.,2004; Becker and Le ... Carbon dioxide in strongly undersaturated melts and origin of kimberlite magmas.

ALEX STREKEISEN-Kimberlite-

Kimberlite magma is considered to rise from the deep mantle along cracks and fissures. The magma is believed to contain insufficient volatiles to allow direct ...

Kimberlites and Related Rocks: New Insight into Petrogenesis and ...

Kimberlites are igneous rocks that represent the deepest magmas originated from the mantle (> 150 km). Studies of kimberlites and their crustal and mantle ...

How diamond-bearing kimberlites reach the surface of Earth

When kimberlitic magmas are forced through long chimneys of volcanic origin called pipes, like the water in a hose when the nozzle is ...

Ascent of kimberlite magma | PPT | Free Download - SlideShare

Kimberlite magmas have the deepest origin of all terrestrial magmas and are exclusively associated with cratons. Kimberlite magma originate ...

Ocean-island basalt–like source of kimberlite magmas from West ...

The depth of origin of kimberlite magmas remains controversial. ... Group 1 kimberlites have Sr-Nd isotope compositions similar to bulk earth.

Special Issue : Minerals of Kimberlites: An Insight into Petrogenesis ...

Kimberlites are igneous rocks that represent the deepest magmas originated from the mantle (> 150 km) and typically occur within cratons. Studies of kimberlites ...