Abstract
This study presents mineralogical and thermobarometric data for equilibrium peridotite assemblages from the V. Grib kimberlite pipe of the Arkhangelsk diamond province. We provided the first constraints on the composition, structure, thermal state, and lower boundary of the lithospheric mantle beneath the V. Grib kimberlite pipe. It was found that phlogopite-free and phlogopite-bearing peridotite xenoliths can be distinguished by their mineral chemistry. The occurrence of phlogopite in peridotites may represent evidence for modal metasomatism responsible for variation in the mineral composition of phlogopite-pyrope and pyrope peridotites. On the basis of P-T estimates, we conclude that modal metasomatism may have affected the entire thickness of the lithospheric mantle beneath the V. Grib kimberlite pipe. Comparison of our results with the available data from the literature shows strong vertical and lateral mantle heterogeneity beneath kimberlite pipes of the Lomonosov deposit and the V. Grib pipe.
| Original language | English |
|---|---|
| Pages (from-to) | 776-781 |
| Number of pages | 6 |
| Journal | Doklady Earth Sciences |
| Volume | 444 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jun 2012 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Earth and Planetary Sciences (miscellaneous)
- Earth and Planetary Sciences(all)
Cite this
Mineralogy and equilibrium P-T estimates for peridotite assemblages from the V. Grib Kimberlite Pipe (Arkhangelsk Kimberlite Province). / Shchukina, E. V.; Golovin, N. N.; Mal'Kovets, V. G.; Pokhilenko, N. P.
In: Doklady Earth Sciences, Vol. 444, No. 2, 06.2012, p. 776-781.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Mineralogy and equilibrium P-T estimates for peridotite assemblages from the V. Grib Kimberlite Pipe (Arkhangelsk Kimberlite Province)
AU - Shchukina, E. V.
AU - Golovin, N. N.
AU - Mal'Kovets, V. G.
AU - Pokhilenko, N. P.
PY - 2012/6
Y1 - 2012/6
N2 - This study presents mineralogical and thermobarometric data for equilibrium peridotite assemblages from the V. Grib kimberlite pipe of the Arkhangelsk diamond province. We provided the first constraints on the composition, structure, thermal state, and lower boundary of the lithospheric mantle beneath the V. Grib kimberlite pipe. It was found that phlogopite-free and phlogopite-bearing peridotite xenoliths can be distinguished by their mineral chemistry. The occurrence of phlogopite in peridotites may represent evidence for modal metasomatism responsible for variation in the mineral composition of phlogopite-pyrope and pyrope peridotites. On the basis of P-T estimates, we conclude that modal metasomatism may have affected the entire thickness of the lithospheric mantle beneath the V. Grib kimberlite pipe. Comparison of our results with the available data from the literature shows strong vertical and lateral mantle heterogeneity beneath kimberlite pipes of the Lomonosov deposit and the V. Grib pipe.
AB - This study presents mineralogical and thermobarometric data for equilibrium peridotite assemblages from the V. Grib kimberlite pipe of the Arkhangelsk diamond province. We provided the first constraints on the composition, structure, thermal state, and lower boundary of the lithospheric mantle beneath the V. Grib kimberlite pipe. It was found that phlogopite-free and phlogopite-bearing peridotite xenoliths can be distinguished by their mineral chemistry. The occurrence of phlogopite in peridotites may represent evidence for modal metasomatism responsible for variation in the mineral composition of phlogopite-pyrope and pyrope peridotites. On the basis of P-T estimates, we conclude that modal metasomatism may have affected the entire thickness of the lithospheric mantle beneath the V. Grib kimberlite pipe. Comparison of our results with the available data from the literature shows strong vertical and lateral mantle heterogeneity beneath kimberlite pipes of the Lomonosov deposit and the V. Grib pipe.
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UR - http://www.scopus.com/inward/citedby.url?scp=84865644229&partnerID=8YFLogxK
U2 - 10.1134/S1028334X12060268
DO - 10.1134/S1028334X12060268
M3 - Article
VL - 444
SP - 776
EP - 781
JO - Doklady Earth Sciences
JF - Doklady Earth Sciences
SN - 1028-334X
IS - 2
ER -