Morphology of trap sills near kimberlites

Research subject . Trap sills of the Daldin-Alakit diamond-bearing region western Yakutia. Aim To establish reason for influence sedimentary rocks containing kimberlite diatremes on introduction basite magma that forms trap and possibility using morphology as a search signs kimberlites. Materials methods Sections near kimberlites, their structure, petrographic petrochemical composition dolerites performing were studied. Results During formation diatremes, accompanied by pulsating explosions shifting to top, significant compaction kimberlites occurs, associated with thermoelastic stress fields. This process leads zones which are difficult penetrate relatively viscous, protocrystalline-enriched magmas. When such magmas introduced, latter before form torus-shaped shafts sharply increasing power in intrusions. Sometimes magma, flowing around creates “trappless windows”, occasionally splitting into low-power “tongues”. Quite frequently, crumple, acquiring wave-like shape. Conclusion All listed morphological features traps arise during thus providing an indirect method searching particularly areal drilling territories covered continuous fields conducted ALROSA Western