1.86 Ga key paleomagnetic pole from the Murmansk craton intrusions – Eastern Murman Sill Province, NE Fennoscandia: Multidisciplinary approach and paleotectonic applications

Переведенное название: 1.86 Палеомагнитный полюс....

Roman V. Veselovskiy, Alexander V. Samsonov, Alexandra V. Stepanova, Ekaterina B. Salnikova, Yulia O. Larionova, Alexey V. Travin, Andrey A. Arzamastsev, Svetlana V. Egorova, Kseniya G. Erofeeva, Maria V. Stifeeva, Valentina V. Shcherbakova, Valeriy P. Shcherbakov, Grigoriy V. Zhidkov, Vladimir S. Zakharov

Результат исследований: Научные публикации в периодических изданияхстатья

1 цитирование (Scopus)

Выдержка

We present the first 1.86 Ga paleomagnetic key pole of Fennoscandia obtained for the dolerite sills of the Murmansk craton - Eastern Murman Sill Province, that outcrop in the northern part of the Kola Peninsula along the Barents Sea coast for a distance of 200 km (Slat = 68.5 degrees; Slong = 37.9 degrees; N = 16 sites; Plat = 54.7 degrees; Plong = 234.7 degrees; dp/dm = 4.3 degrees/6.3 degrees, Qv = 5). The age of the sills and their characteristic remanent magnetization (ChRM) was determined by four independent geochronometers: U-Pb -1860 +/- 4 and 1863 +/- 7 Ma (IDTIMS, baddeleyite), Sm-Nd - 1889 +/- 57 Ma, Rb-Sr - 1850 Ma, Ar/Ar - 1865 +/- 8 and 1857 +/- 20 Ma (biotite). The primary nature of the ChRM is confirmed by the results of petrographic, geochemical, paleo- and rock magnetic studies, as well as by thermochronological data. The similarity of the petrographic and geochemical characteristics of sills from different localities indicates that these dolerite sills were formed during a single magmatic event and their cooling down to 580 degrees C occurred at depths of about 10 +/- 2 km and lasted similar to 2800 years or even faster. Paleogeographic reconstruction of Fennoscandia on the basis of the obtained paleomagnetic pole is in general agreement with the previously suggested configuration of core of the Nuna/Columbia supercontinent (Evans and Mitchell, 2011; Meert and Santosh, 2017). A new reliable Thellier-Coe paleointensity determination for this time reveals a rather low mean VDM = 1.8 ( +/- 0.1) x 10(22) Am-2 that supports the Proterozoic dipole low hypothesis (Biggin et al., 2009).

Язык оригиналаанглийский
Номер статьи5
Страницы (с-по)126-145
Число страниц20
ЖурналPrecambrian Research
Том324
DOI
СостояниеОпубликовано - 1 мая 2019

Отпечаток

sill
craton
Poles
Magnetization
Specification languages
Coastal zones
remanent magnetization
diabase
Rocks
Cooling
baddeleyite
supercontinent
biotite
Proterozoic
outcrop
province
cooling
coast
rock

Предметные области Scopus

  • Геология
  • Геохимия и петрология

Цитировать

Veselovskiy, Roman V. ; Samsonov, Alexander V. ; Stepanova, Alexandra V. ; Salnikova, Ekaterina B. ; Larionova, Yulia O. ; Travin, Alexey V. ; Arzamastsev, Andrey A. ; Egorova, Svetlana V. ; Erofeeva, Kseniya G. ; Stifeeva, Maria V. ; Shcherbakova, Valentina V. ; Shcherbakov, Valeriy P. ; Zhidkov, Grigoriy V. ; Zakharov, Vladimir S. / 1.86 Ga key paleomagnetic pole from the Murmansk craton intrusions – Eastern Murman Sill Province, NE Fennoscandia : Multidisciplinary approach and paleotectonic applications. В: Precambrian Research. 2019 ; Том 324. стр. 126-145.
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title = "1.86 Ga key paleomagnetic pole from the Murmansk craton intrusions – Eastern Murman Sill Province, NE Fennoscandia: Multidisciplinary approach and paleotectonic applications",
abstract = "We present the first 1.86 Ga paleomagnetic key pole of Fennoscandia obtained for the dolerite sills of the Murmansk craton - Eastern Murman Sill Province, that outcrop in the northern part of the Kola Peninsula along the Barents Sea coast for a distance of 200 km (Slat = 68.5 degrees; Slong = 37.9 degrees; N = 16 sites; Plat = 54.7 degrees; Plong = 234.7 degrees; dp/dm = 4.3 degrees/6.3 degrees, Qv = 5). The age of the sills and their characteristic remanent magnetization (ChRM) was determined by four independent geochronometers: U-Pb -1860 +/- 4 and 1863 +/- 7 Ma (IDTIMS, baddeleyite), Sm-Nd - 1889 +/- 57 Ma, Rb-Sr - 1850 Ma, Ar/Ar - 1865 +/- 8 and 1857 +/- 20 Ma (biotite). The primary nature of the ChRM is confirmed by the results of petrographic, geochemical, paleo- and rock magnetic studies, as well as by thermochronological data. The similarity of the petrographic and geochemical characteristics of sills from different localities indicates that these dolerite sills were formed during a single magmatic event and their cooling down to 580 degrees C occurred at depths of about 10 +/- 2 km and lasted similar to 2800 years or even faster. Paleogeographic reconstruction of Fennoscandia on the basis of the obtained paleomagnetic pole is in general agreement with the previously suggested configuration of core of the Nuna/Columbia supercontinent (Evans and Mitchell, 2011; Meert and Santosh, 2017). A new reliable Thellier-Coe paleointensity determination for this time reveals a rather low mean VDM = 1.8 ( +/- 0.1) x 10(22) Am-2 that supports the Proterozoic dipole low hypothesis (Biggin et al., 2009).",
keywords = "Fennoscandian Shield, Geochemistry, Geochronology, Key paleomagnetic pole, Murmansk craton, Paleointensity",
author = "Veselovskiy, {Roman V.} and Samsonov, {Alexander V.} and Stepanova, {Alexandra V.} and Salnikova, {Ekaterina B.} and Larionova, {Yulia O.} and Travin, {Alexey V.} and Arzamastsev, {Andrey A.} and Egorova, {Svetlana V.} and Erofeeva, {Kseniya G.} and Stifeeva, {Maria V.} and Shcherbakova, {Valentina V.} and Shcherbakov, {Valeriy P.} and Zhidkov, {Grigoriy V.} and Zakharov, {Vladimir S.}",
year = "2019",
month = "5",
day = "1",
doi = "10.1016/j.precamres.2019.01.017",
language = "English",
volume = "324",
pages = "126--145",
journal = "Precambrian Research",
issn = "0301-9268",
publisher = "Elsevier",

}

Veselovskiy, RV, Samsonov, AV, Stepanova, AV, Salnikova, EB, Larionova, YO, Travin, AV, Arzamastsev, AA, Egorova, SV, Erofeeva, KG, Stifeeva, MV, Shcherbakova, VV, Shcherbakov, VP, Zhidkov, GV & Zakharov, VS 2019, '1.86 Ga key paleomagnetic pole from the Murmansk craton intrusions – Eastern Murman Sill Province, NE Fennoscandia: Multidisciplinary approach and paleotectonic applications', Precambrian Research, том. 324, 5, стр. 126-145. https://doi.org/10.1016/j.precamres.2019.01.017

1.86 Ga key paleomagnetic pole from the Murmansk craton intrusions – Eastern Murman Sill Province, NE Fennoscandia : Multidisciplinary approach and paleotectonic applications. / Veselovskiy, Roman V.; Samsonov, Alexander V.; Stepanova, Alexandra V.; Salnikova, Ekaterina B.; Larionova, Yulia O.; Travin, Alexey V.; Arzamastsev, Andrey A.; Egorova, Svetlana V.; Erofeeva, Kseniya G.; Stifeeva, Maria V.; Shcherbakova, Valentina V.; Shcherbakov, Valeriy P.; Zhidkov, Grigoriy V.; Zakharov, Vladimir S.

В: Precambrian Research, Том 324, 5, 01.05.2019, стр. 126-145.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - 1.86 Ga key paleomagnetic pole from the Murmansk craton intrusions – Eastern Murman Sill Province, NE Fennoscandia

T2 - Multidisciplinary approach and paleotectonic applications

AU - Veselovskiy, Roman V.

AU - Samsonov, Alexander V.

AU - Stepanova, Alexandra V.

AU - Salnikova, Ekaterina B.

AU - Larionova, Yulia O.

AU - Travin, Alexey V.

AU - Arzamastsev, Andrey A.

AU - Egorova, Svetlana V.

AU - Erofeeva, Kseniya G.

AU - Stifeeva, Maria V.

AU - Shcherbakova, Valentina V.

AU - Shcherbakov, Valeriy P.

AU - Zhidkov, Grigoriy V.

AU - Zakharov, Vladimir S.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - We present the first 1.86 Ga paleomagnetic key pole of Fennoscandia obtained for the dolerite sills of the Murmansk craton - Eastern Murman Sill Province, that outcrop in the northern part of the Kola Peninsula along the Barents Sea coast for a distance of 200 km (Slat = 68.5 degrees; Slong = 37.9 degrees; N = 16 sites; Plat = 54.7 degrees; Plong = 234.7 degrees; dp/dm = 4.3 degrees/6.3 degrees, Qv = 5). The age of the sills and their characteristic remanent magnetization (ChRM) was determined by four independent geochronometers: U-Pb -1860 +/- 4 and 1863 +/- 7 Ma (IDTIMS, baddeleyite), Sm-Nd - 1889 +/- 57 Ma, Rb-Sr - 1850 Ma, Ar/Ar - 1865 +/- 8 and 1857 +/- 20 Ma (biotite). The primary nature of the ChRM is confirmed by the results of petrographic, geochemical, paleo- and rock magnetic studies, as well as by thermochronological data. The similarity of the petrographic and geochemical characteristics of sills from different localities indicates that these dolerite sills were formed during a single magmatic event and their cooling down to 580 degrees C occurred at depths of about 10 +/- 2 km and lasted similar to 2800 years or even faster. Paleogeographic reconstruction of Fennoscandia on the basis of the obtained paleomagnetic pole is in general agreement with the previously suggested configuration of core of the Nuna/Columbia supercontinent (Evans and Mitchell, 2011; Meert and Santosh, 2017). A new reliable Thellier-Coe paleointensity determination for this time reveals a rather low mean VDM = 1.8 ( +/- 0.1) x 10(22) Am-2 that supports the Proterozoic dipole low hypothesis (Biggin et al., 2009).

AB - We present the first 1.86 Ga paleomagnetic key pole of Fennoscandia obtained for the dolerite sills of the Murmansk craton - Eastern Murman Sill Province, that outcrop in the northern part of the Kola Peninsula along the Barents Sea coast for a distance of 200 km (Slat = 68.5 degrees; Slong = 37.9 degrees; N = 16 sites; Plat = 54.7 degrees; Plong = 234.7 degrees; dp/dm = 4.3 degrees/6.3 degrees, Qv = 5). The age of the sills and their characteristic remanent magnetization (ChRM) was determined by four independent geochronometers: U-Pb -1860 +/- 4 and 1863 +/- 7 Ma (IDTIMS, baddeleyite), Sm-Nd - 1889 +/- 57 Ma, Rb-Sr - 1850 Ma, Ar/Ar - 1865 +/- 8 and 1857 +/- 20 Ma (biotite). The primary nature of the ChRM is confirmed by the results of petrographic, geochemical, paleo- and rock magnetic studies, as well as by thermochronological data. The similarity of the petrographic and geochemical characteristics of sills from different localities indicates that these dolerite sills were formed during a single magmatic event and their cooling down to 580 degrees C occurred at depths of about 10 +/- 2 km and lasted similar to 2800 years or even faster. Paleogeographic reconstruction of Fennoscandia on the basis of the obtained paleomagnetic pole is in general agreement with the previously suggested configuration of core of the Nuna/Columbia supercontinent (Evans and Mitchell, 2011; Meert and Santosh, 2017). A new reliable Thellier-Coe paleointensity determination for this time reveals a rather low mean VDM = 1.8 ( +/- 0.1) x 10(22) Am-2 that supports the Proterozoic dipole low hypothesis (Biggin et al., 2009).

KW - Fennoscandian Shield

KW - Geochemistry

KW - Geochronology

KW - Key paleomagnetic pole

KW - Murmansk craton

KW - Paleointensity

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U2 - 10.1016/j.precamres.2019.01.017

DO - 10.1016/j.precamres.2019.01.017

M3 - Article

AN - SCOPUS:85061095678

VL - 324

SP - 126

EP - 145

JO - Precambrian Research

JF - Precambrian Research

SN - 0301-9268

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ER -