Late Cretaceous intraplate magmatic event in the North-Minusinsk depression: Paleomagnetic and 40Ar/39Ar evidence

V. Yu Bragin; V. N. Reutskii; K. D. Litasov; V. G. Mal'kovets

Late Cretaceous intraplate magmatic event in the North-Minusinsk depression: Paleomagnetic and 40Ar/39Ar evidence

V. Yu Bragin, V. N. Reutskii, K. D. Litasov, V. G. Mal'kovets

ARC Centre of Excellence for Core to Crust Fluid Systems (incorporation ARC National Key Centre for Geochemical evolution and Metallogeny of Continents (GEMOC))

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

8 Citations (Scopus)

Abstract

First paleomagnetic and geochronological data on four basaltic volcanic pipes of the North-Minusinsk depression are presented. It is shown that the explosion of all pipes took place between 82 and 77 Ma ago. All ChRM directions of basanites are of reverse polarity. This fact is in good agreement with the ⁴⁰Ar/³⁹Ar ages of rocks (within the accuracy of the ⁴⁰Ar/³⁹Ar-method). The revealed ChRM corresponds to the end of chron 33R of reverse polarity (according to the magnetic-polarity time scale). The distinction between the paleomagnetic poles of the investigated pipes and APWP of Eurasia is of fundamental importance.

Original language	English
Pages (from-to)	576-582
Number of pages	7
Journal	Geologiya i Geofizika
Issue number	4
Publication status	Published - 1999

Keywords

Ar-Ar-dating
Basanite
Paleomagnetism
Volcanic pipes

Cite this

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title = "Late Cretaceous intraplate magmatic event in the North-Minusinsk depression: Paleomagnetic and 40Ar/39Ar evidence",

abstract = "First paleomagnetic and geochronological data on four basaltic volcanic pipes of the North-Minusinsk depression are presented. It is shown that the explosion of all pipes took place between 82 and 77 Ma ago. All ChRM directions of basanites are of reverse polarity. This fact is in good agreement with the 40Ar/39Ar ages of rocks (within the accuracy of the 40Ar/39Ar-method). The revealed ChRM corresponds to the end of chron 33R of reverse polarity (according to the magnetic-polarity time scale). The distinction between the paleomagnetic poles of the investigated pipes and APWP of Eurasia is of fundamental importance.",

keywords = "Ar-Ar-dating, Basanite, Paleomagnetism, Volcanic pipes",

author = "Bragin, {V. Yu} and Reutskii, {V. N.} and Litasov, {K. D.} and Mal'kovets, {V. G.}",

year = "1999",

language = "English",

pages = "576--582",

journal = "Geologiya i Geofizika",

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T1 - Late Cretaceous intraplate magmatic event in the North-Minusinsk depression

T2 - Paleomagnetic and 40Ar/39Ar evidence

AU - Bragin, V. Yu

AU - Reutskii, V. N.

AU - Litasov, K. D.

AU - Mal'kovets, V. G.

PY - 1999

Y1 - 1999

N2 - First paleomagnetic and geochronological data on four basaltic volcanic pipes of the North-Minusinsk depression are presented. It is shown that the explosion of all pipes took place between 82 and 77 Ma ago. All ChRM directions of basanites are of reverse polarity. This fact is in good agreement with the 40Ar/39Ar ages of rocks (within the accuracy of the 40Ar/39Ar-method). The revealed ChRM corresponds to the end of chron 33R of reverse polarity (according to the magnetic-polarity time scale). The distinction between the paleomagnetic poles of the investigated pipes and APWP of Eurasia is of fundamental importance.

AB - First paleomagnetic and geochronological data on four basaltic volcanic pipes of the North-Minusinsk depression are presented. It is shown that the explosion of all pipes took place between 82 and 77 Ma ago. All ChRM directions of basanites are of reverse polarity. This fact is in good agreement with the 40Ar/39Ar ages of rocks (within the accuracy of the 40Ar/39Ar-method). The revealed ChRM corresponds to the end of chron 33R of reverse polarity (according to the magnetic-polarity time scale). The distinction between the paleomagnetic poles of the investigated pipes and APWP of Eurasia is of fundamental importance.

KW - Ar-Ar-dating

KW - Basanite

KW - Paleomagnetism

KW - Volcanic pipes

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M3 - Article

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SN - 0016-7886

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JO - Geologiya i Geofizika

JF - Geologiya i Geofizika

IS - 4

ER -

Late Cretaceous intraplate magmatic event in the North-Minusinsk depression: Paleomagnetic and 40Ar/39Ar evidence

Abstract

Keywords

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