Magmatism of the junction region of the Knipovich and Mohns Ridges (Polar Atlantic): Results of cruise 25 of the R/V "Akademik Nikolai Strakhov"

被引：1

作者：

Sushchevskaya, N. M. ^{[1
]}

Peyve, A. A. ^{[2
]}

Belyatsky, B. V. ^{[3
]}

机构：

[1] Russian Acad Sci, Vernadsky Inst Geochem & Analyt Chem, Moscow 119991, Russia

[2] Russian Acad Sci, Inst Geol, Moscow 119017, Russia

[3] All Russia Res Inst Geol & Mineral Resources Worl, St Petersburg 190121, Russia

来源：

GEOCHEMISTRY INTERNATIONAL | 2011年 / 49卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

magmatism of oceanic rift zones; Knipovich Ridge; Mohns Ridge; tholeiitic magmatism; geochemistry of oceanic basalts; Polar Atlantic; NORWEGIAN-GREENLAND SEA; NORTH-ATLANTIC; GEOCHEMISTRY; SPITSBERGEN; BASALTS; MANTLE; EVOLUTION;

D O I：

10.1134/S0016702911010101

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Based on the investigation of samples recovered during Cruise 25 of the R/V "Akademik Nikolai Strakhov," the character of magmatism was determined in the flank parts of the rift zone at the 74A degrees 05'N and 73A degrees 50'N region, where the direction of the rift valley changes from the north-northwest in the Knipovich Ridge to the northeast-trending structures of the Mohns Ridge. It was shown that the tholeiitic magmas of this region shows all the geochemical characteristics of TOR-2, which is typical of the Mohns Ridge and most oceanic rift zones worldwide, and differ from the basalts of the Knipovich Ridge, which are assigned to a shallower type of tholeiitic magmatism (Na-TOR). The persistent depletion of the magmas in terms of lithophile element contents and radiogenic isotope ratios of Sr, Nd, and Pb reflects the conditions of their formation during the ascent of the depleted oceanic mantle, which has occurred without significant complications since the early stages of the formation of the Mohns Ridge.

引用

页码：31 / 45

页数：15

共 19 条

[1] Magmatism of the junction region of the Knipovich and Mohns Ridges (Polar Atlantic): Results of cruise 25 of the R/V “Akademik Nikolai Strakhov”
N. M. Sushchevskaya
A. A. Peyve
B. V. Belyatsky
Geochemistry International, 2011, 49 : 31 - 45
[2] Geodynamic Settings of the Seafloor Relief Formation in the Madagascar Basin from Data of the 29th Cruise of R/V Akademik Nikolai Strakhov
Sokolov, S. Yu.
Dobroliubova, K. O.
Turko, N. N.
Moroz, E. A.
Abramova, A. S.
Mazarovich, A. O.
DOKLADY EARTH SCIENCES, 2024, 518 (01) : 1518 - 1526
[3] Integrated Oceanographic Research of Discovery Gap (Eastern North Atlantic) during the Cruise 43 of the R/V Akademik Nikolaj Strakhov
Dorokhova, E., V
Krechik, V. A.
Ponomarenko, E. P.
Dudkov, I. Yu
Shakhovskoy, I. B.
Napreenko-Dorokhova, T. N.
Ezhov, V. E.
Malafeev, G., V
Kuleshova, L. A.
Glazkova, T. A.
OCEANOLOGY, 2021, 61 (01) : 144 - 146
[4] Integrated Oceanographic Research of Discovery Gap (Eastern North Atlantic) during the Cruise 43 of the R/V Akademik Nikolaj Strakhov
E. V. Dorokhova
V. A. Krechik
E. P. Ponomarenko
I. Yu. Dudkov
I. B. Shakhovskoy
T. N. Napreenko-Dorokhova
V. E. Ezhov
G. V. Malafeev
L. A. Kuleshova
T. A. Glazkova
Oceanology, 2021, 61 : 144 - 146
[5] Geological and Geophysical Studies of the Double Transform Fault Charlie Gibbs (North Atlantic) during Cruise 50 of R/V Akademik Nikolaj Strakhov
S. G. Skolotnev
A. A. Peyve
A. Sanfilippo
S. Yu. Sokolov
L. Petracchini
K. O. Dobrolyubova
Y. Nestola
A. N. Ivanenko
V. Basch
A. N. Pertsev
C. Sani
Yu. V. Brusilovskiy
C. Ferrando
I. A. Veklich
A. S. Bich
K. N. Sholukhov
A. A. Razumovskii
V. N. Dobrolyubov
Oceanology, 2022, 62 : 724 - 726
[6] Geological and Geophysical Studies of the Double Transform Fault Charlie Gibbs (North Atlantic) during Cruise 50 of R/V Akademik Nikolaj Strakhov
Skolotnev, S. G.
Peyve, A. A.
Sanfilippo, A.
Sokolov, S. Yu
Petracchini, L.
Dobrolyubova, K. O.
Nestola, Y.
Ivanenko, A. N.
Basch, V
Pertsev, A. N.
Sani, C.
Brusilovskiy, Yu, V
Ferrando, C.
Veklich, I. A.
Bich, A. S.
Sholukhov, K. N.
Razumovskii, A. A.
Dobrolyubov, V. N.
OCEANOLOGY, 2022, 62 (05) : 724 - 726
[7] 25TH CRUISE OF R-V AKADEMIK-KURCHATOV (BASIC SCIENTIFIC RESULTS)
KORT, VG
OKEANOLOGIYA, 1978, 18 (02): : 373 - 377
[8] Geological-geophysical studies in the northern Barents Sea and on the continental shelf of the Arctic Ocean during Cruise 25 of the R/V Akademik Nikolay Strakhov
Zayonchek, A. V.
Mazarovich, A. O.
Lavrushin, V. Yu.
Sokolov, S. Yu.
Khutorskoi, M. D.
Abramova, A. S.
Aliulov, R. Kh.
Akhmedzyanov, V. R.
Zaraiskaya, Yu. A.
Ermakov, A. V.
Efimov, V. N.
Moroz, E. A.
Peive, A. A.
Prokhorov, D. A.
Radionova, E. P.
Raznitsyn, Yu. N.
Razumovskii, A. A.
Chernykh, A. A.
Yampol'skii, K. P.
DOKLADY EARTH SCIENCES, 2009, 427 (01) : 740 - 745
[9] Geological-geophysical studies in the northern Barents Sea and on the continental shelf of the Arctic Ocean during Cruise 25 of the R/V Akademik Nikolay Strakhov
A. V. Zayonchek
A. O. Mazarovich
V. Yu. Lavrushin
S. Yu. Sokolov
M. D. Khutorskoi
A. S. Abramova
R. Kh. Aliulov
V. R. Akhmedzyanov
Yu. A. Zaraiskaya
A. V. Ermakov
V. N. Efimov
E. A. Moroz
A. A. Peive
D. A. Prokhorov
E. P. Radionova
Yu. N. Raznitsyn
A. A. Razumovskii
A. A. Chernykh
K. P. Yampol’skii
Doklady Earth Sciences, 2009, 427 : 740 - 745
[10] Geological Investigations of the Mid-Atlantic Ridge between the Charlie Gibbs and Maxwell Transform Faults during Cruise 53 of the R/V Akademik Nikolaj Strakhov
Peyve, A. A.
Sokolov, S. Yu.
Ivanenko, A. N.
Razumovskiy, A. A.
Patina, I. S.
Bogolyubskiy, V. A.
Veklich, I. A.
Denisova, A. P.
Dobrolyubov, V. N.
Dokashenko, S. A.
Ivanova, E. S.
Lapina, S. A.
Naumov, I. A.
Nikitin, N. S.
Urazmuratova, Z. F.
OCEANOLOGY, 2023, 63 (02) : 294 - 295

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