Methane in Carbonate Melt Inclusions in the Rock-Forming Minerals of Calc-Silicate Rocks of the Kokchetav Massif

被引：0

作者：

Mikhno, A. O. ^{[1
]}

Vinogradova, Yu. G. ^{[2
]}

Rashchenko, S. V. ^{[1
]}

Korsakov, A. V. ^{[2
]}

机构：

[1] Novosibirsk State Univ, Novosibirsk 630090, Russia

[2] Russian Acad Sci, Sobolev Inst Geol & Mineral, Siberian Branch, Novosibirsk 630090, Russia

来源：

DOKLADY EARTH SCIENCES | 2023年 / 508卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

methane; partial melting; metacarbonates; subduction; ultrahigh pressure metamorphism; OXYGEN FUGACITY; DIAMOND;

D O I：

10.1134/S1028334X22601882

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Secondary inclusions of the carbonate melt in garnets and clinopyroxenes from ultrahigh-pressure calc-silicate rocks were studied. Secondary carbonate inclusions are located in the healed cracks confined to large (100 mu m-3 mm) primary carbonate inclusions in garnet. In some cases, the healed cracks form plates that intersect both garnet and inclusions of potassium-bearing clinopyroxene in garnet. The high content of K2O (0.64 wt %) in the healed cracks in clinopyroxene inclusions suggests that their formation and healing took place during the stage of ultrahigh pressures. Interpretation of the Raman spectra of the secondary inclusions of the carbonate melt in garnet and clinopyroxene confirmed the presence of the following phases: methane, graphite, calcite, dolomite, muscovite, and phlogopite. The data obtained allowed us to recognize the stage of ultrahigh pressure metamorphism in the calc-silicate rocks of the Kokchetav massif, during which methane accumulation in the carbonate melt took place, for the first time.

引用

页码：6 / 11

页数：6

共 50 条

[31] Silicate and carbonate melt inclusions associated with diamonds in deeply subducted carbonate rocks
Korsakov, AV
Hermann, J
EARTH AND PLANETARY SCIENCE LETTERS, 2006, 241 (1-2) : 104 - 118
[32] SILICATE MELT INCLUSIONS IN MINERALS OF ALPINE-TYPE ULTRABASIC ROCKS
PENG, LG
KEXUE TONGBAO, 1987, 32 (10): : 689 - 693
[33] SILICATE MELT INCLUSIONS IN MINERALS OF ALPINE-TYPE ULTRABASIC ROCKS
彭礼贵
Science Bulletin, 1987, (10) : 689 - 693
[34] TITANIUM-ZIRCONIUM GARNET OF CALC-SILICATE ROCK INCLUSIONS OF GABBRO OF RADAUTAL, HARZ MOUNTAINS, FRG
KORITNIG, S
ROSCH, H
SCHNEIDER, A
SEIFERT, F
TSCHERMAKS MINERALOGISCHE UND PETROGRAPHISCHE MITTEILUNGEN, 1978, 25 (04): : 305 - 313
[35] Modification of mineral inclusions in garnet under high-pressure conditions: experimental simulation and application to the carbonate-silicate rocks of Kokchetav massif
Perchuk, A. L.
Davydova, V. V.
Burchard, M.
Maresch, W. V.
Schertl, H. -P.
Yapaskurt, V. O.
Safonov, O. G.
RUSSIAN GEOLOGY AND GEOPHYSICS, 2009, 50 (12) : 1153 - 1168
[36] PARTITION OF TRACE ELEMENTS BETWEEN ROCK-FORMING MINERALS AND HOST VOLCANIC ROCKS
HIGUCHI, H
NAGASAWA, H
EARTH AND PLANETARY SCIENCE LETTERS, 1969, 7 (03) : 281 - &
[37] ATOMIC-ABSORPTIVE DETERMINATION OF ROCK-FORMING ELEMENTS IN SILICATE ROCKS AND BAUXITES
VOROBEV, VS
BUTKINA, TA
VORONKOVA, MA
PYATOVA, VN
KOSTYUKOVA, LM
STEPANOVA, NA
INDUSTRIAL LABORATORY, 1978, 44 (04): : 483 - 487
[38] Melt and fluid inclusions in zircon and rock-forming minerals from plagioclase gneisses of the archean complex penetrated by the Kola superdeep borehole
Chupin, VP
Vetrin, VR
GEOCHEMISTRY INTERNATIONAL, 2005, 43 (02) : 177 - 183
[39] Melt and fluid inclusions in zircon and rock-forming minerals from plagioclase gneisses of the archean complex penetrated by the Kola Superdeep Borehole
2005, Nauka, Moscow, Moscow, Russian Federation (43):
[40] THE ROCK-FORMING MINERALS AND NICKEL CONTENT OF ULTRABASIC ROCKS OF THE VERKHOVTSEVO REGION OF THE UKRAINIAN SHIELD
STULCHIKOV, VA
ILOVAISKAYA, SV
SHARKIN, OP
DOPOVIDI AKADEMII NAUK UKRAINSKOI RSR SERIYA B-GEOLOGICHNI KHIMICHNI TA BIOLOGICHNI NAUKI, 1989, (04): : 19 - 22

← 1 2 3 4 5 →