Calcium-Rich Ultramafites, Ankaramites, and Clinopyroxene–Porphyric Gabbro of the Birkhin Massif in the Ol’khon Region: Solution of the Problem of Primary Melt and Formation of Intrusion

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Calcium-Rich Ultramafites, Ankaramites, and Clinopyroxene–Porphyric Gabbro of the Birkhin Massif in the Ol’khon Region: Solution of the Problem of Primary Melt and Formation of Intrusion. / Pushkarev, E. V.; Lavrenchuk, A. V.; Gottman, I. A. et al.

In: Russian Geology and Geophysics, Vol. 64, No. 9, 09.2023, p. 1065-1085.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{ab7c26900f154adda5c1c257c83d07b1,

title = "Calcium-Rich Ultramafites, Ankaramites, and Clinopyroxene–Porphyric Gabbro of the Birkhin Massif in the Ol{\textquoteright}khon Region: Solution of the Problem of Primary Melt and Formation of Intrusion",

abstract = "The paper presents new data on the chemical and mineral compositions of ultramafic rocks and various gabbro of the Birkhin massif in the Ol{\textquoteright}khon region. Porphyric phenocrysts and zoned grains of clinopyroxene have been first found and studied in gabbronorite, which made it possible to reconstruct the entire melt crystallization trend from ultramafic to gabbro parageneses. Similar clinopyroxene trends have been established for clinopyroxenites and subvolcanic ankaramites, whose bodies and dikes have been recently discovered within the massif and in its environment. The total petrological data show that the magnesian high-Ca ankaramite melt corresponds in composition to the assumed primary melt for the Birkhin massif.",

keywords = "Ankaramites, chromian diopside, clinopyroxenites, differentiated series, mantle sources, primary melt, western Baikal area, zoned clinopyroxene",

author = "Pushkarev, {E. V.} and Lavrenchuk, {A. V.} and Gottman, {I. A.} and Sklyarov, {E. V.}",

note = "The work is done on the state assignment of IGG UB RAS (No. 123011800009-9) and the state assignments of IGM SB RAS (No.122041400044-2) and IEC SB RAS. The re-equipment and comprehensive development of the Geo-analitik Shared Research Facilities of the IGG UB RAS, Yekaterinburg, are financially supported by a grant from the Ministry of Science and Higher Education of the Russian Federation (Agreement No. 075-15-2021-680).",

year = "2023",

month = sep,

doi = "10.2113/RGG20234571",

language = "English",

volume = "64",

pages = "1065--1085",

journal = "Russian Geology and Geophysics",

issn = "1068-7971",

publisher = "Elsevier Science B.V.",

number = "9",

}

RIS

TY - JOUR

T1 - Calcium-Rich Ultramafites, Ankaramites, and Clinopyroxene–Porphyric Gabbro of the Birkhin Massif in the Ol’khon Region: Solution of the Problem of Primary Melt and Formation of Intrusion

AU - Pushkarev, E. V.

AU - Lavrenchuk, A. V.

AU - Gottman, I. A.

AU - Sklyarov, E. V.

N1 - The work is done on the state assignment of IGG UB RAS (No. 123011800009-9) and the state assignments of IGM SB RAS (No.122041400044-2) and IEC SB RAS. The re-equipment and comprehensive development of the Geo-analitik Shared Research Facilities of the IGG UB RAS, Yekaterinburg, are financially supported by a grant from the Ministry of Science and Higher Education of the Russian Federation (Agreement No. 075-15-2021-680).

PY - 2023/9

Y1 - 2023/9

N2 - The paper presents new data on the chemical and mineral compositions of ultramafic rocks and various gabbro of the Birkhin massif in the Ol’khon region. Porphyric phenocrysts and zoned grains of clinopyroxene have been first found and studied in gabbronorite, which made it possible to reconstruct the entire melt crystallization trend from ultramafic to gabbro parageneses. Similar clinopyroxene trends have been established for clinopyroxenites and subvolcanic ankaramites, whose bodies and dikes have been recently discovered within the massif and in its environment. The total petrological data show that the magnesian high-Ca ankaramite melt corresponds in composition to the assumed primary melt for the Birkhin massif.

AB - The paper presents new data on the chemical and mineral compositions of ultramafic rocks and various gabbro of the Birkhin massif in the Ol’khon region. Porphyric phenocrysts and zoned grains of clinopyroxene have been first found and studied in gabbronorite, which made it possible to reconstruct the entire melt crystallization trend from ultramafic to gabbro parageneses. Similar clinopyroxene trends have been established for clinopyroxenites and subvolcanic ankaramites, whose bodies and dikes have been recently discovered within the massif and in its environment. The total petrological data show that the magnesian high-Ca ankaramite melt corresponds in composition to the assumed primary melt for the Birkhin massif.

KW - Ankaramites

KW - chromian diopside

KW - clinopyroxenites

KW - differentiated series

KW - mantle sources

KW - primary melt

KW - western Baikal area

KW - zoned clinopyroxene

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85170221555&origin=inward&txGid=b91e7d3e8272aecae9f94f27e4c16c46

UR - https://www.mendeley.com/catalogue/6eeeb40e-eade-3cd6-acb8-e067ef5b5bbf/

U2 - 10.2113/RGG20234571

DO - 10.2113/RGG20234571

M3 - Article

VL - 64

SP - 1065

EP - 1085

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 9

ER -

ID: 55510241