Plume genesis of non-kimberlite diamonds

Abstract

Calculations shown that a relatively low-temperature kimberlite magmas consolidated with decompression exploded on significant depth and formed pipes. High-temperature lamproite magmas exploded on near-surface conditions and formed mainly tuff covers. Their erosion formed diamond placers. Kimberlite magmas and their diamonds are a result of fractionation peridotite layer of magma ocean. Lamproite magmas and their diamonds are a result of fractionation of magmatic chambers in plumes. Non-kimberlite diamons of placers have lamproite plume genesis.

Keywords

• алмазы
• плюмы
• лампроиты
• кимберлиты
• декомпрессионное затвердевание
• diamonds
• plumes
• lamproite
• kimberlite
• decompression consolidating