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ПРОВОДЯЩИЕ НЕОДНОРОДНОСТИ В ЛИТОСФеРЕ КАК КРИТЕРИЙ ПРОГНОЗНОЙ ОЦЕНКИ АЛМАЗОПЕРСПЕКТИВНЫХ ПЛОЩАДЕЙ (НА ПРИМЕРЕ СИБИРСКОЙ КИМБЕРЛИТОВОЙ ПРОВИНЦИИ)

CONDUCTING LITHOSPHERIC HETEROGENEITIES AS A CRITERION OF PREDICTIVE ASSESSMENt FOR PROMISING DIAMOND AREAS (ON THE EXAMPLE OF SIBERIAN KIMBERLITE PROVINCE)

ПРОВОДЯЩИЕ НЕОДНОРОДНОСТИ В ЛИТОСФеРЕ КАК КРИТЕРИЙ ПРОГНОЗНОЙ ОЦЕНКИ АЛМАЗОПЕРСПЕКТИВНЫХ ПЛОЩАДЕЙ (НА ПРИМЕРЕ СИБИРСКОЙ КИМБЕРЛИТОВОЙ ПРОВИНЦИИ)

Abstract

Результаты магнитотеллурических исследований, проведенных на территории Сибирской кимберлитовой провинции, рассмотрены с позиций структурного контроля размещения кимберлитовых полей и кустов кимберлитовых трубок. Показано, что основными факторами, контролирующими проявления кимберлитового магматизма, являются: глубинные системы рифтогенных разломов области их пересечения в пределах высокоомных блоков земной коры проводящие проницаемые области, расположенные в узлах пересечения глубинных разломов. Разноранговые объекты кимберлитового магматизма характеризуются определенным сочетанием геоэлектрических неоднородностей, различающихся по сопротивлению, латеральным размерам и глубинности. Провинция расположена в пределах контуров, ограниченных изолиниями 180-220км современного положения астеносферы кимберлитовые районы в контурах региональных неоднородностей высокого сопротивления. Поля и кусты кимберлитовых трубок локализуются в пределах проводящих субвертикальных зон. Эти факторы можно рассматривать как критерии прогнозной оценки алмазоперспективных площадей древних платформ.

Results of magnetotelluric tests, carried out in Siberian kimberlite province, are examined from the viewpoint of structural control over location of kimberlite fields and bunches of kimberlite pipes. It is demonstrated that the key factors controlling occurrence of kimberlite magmatism are: deep systems of rift-driven fractures areas of their intersection within high-ohmic blocks of Earth crust conducting permeable areas, located at the intersections of deep faults. Various-rank objects of kimberlite magmatism are characterized by a certain combination of geoelectric heterogeneities, differing in resistance, lateral sizes and depth. The province is situated within the boundaries, limited by isolines 180-220km of current asthenosphere kimberlite areas within the contours of high-resistance regional heterogeneities. Fields and bunches of kimberlite pipes are concentrated within boundaries of conducting subvertical zones. These factors can be used as criteria of predictive assessment for promising diamond areas of the ancient platforms.

№2 (224) (2017)

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Keywords

Сибирская кимберлитовая провинция, проводящие неоднородности, Siberian kimberlite province, conducting hetergoneities, магнитотеллурические исследования, magnetotelluric tests, кимберлитовый магматизм, kimberlite magmatism

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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