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The nature of magma bodies associated with the formation of Cr-poor megacryst suites included in kimberlites is considered with particular regard to the possibility of a virtually isobaric body containing crystals at widely varying temperatures. A model is proposed in which a complex of magma sheets and other apophyses exists in a temperature gradient, thereby allowing the simultaneous existence of different states of magma differentiation and crystallization.
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Harte et al. (1981) studied this question.
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