НОВЫЙ Пермо-Триасовый ПАЛЕОМАГНИТНЫЙ  ПОЛЮС Восточно-Европейской ПЛАТФОРМЫ,  ВЫЧИСЛЕННЫЙ С УЧЕТОМ ЗАНИЖЕНИЯ НАКЛОНЕНИЯ  В ОСАДОЧНЫХ ПОРОДАХ, "Физика Земли"

Фетисова, А.М.; Веселовский, Р.В.; Scholze, F.; Балабанов, Ю.П.

doi:10.7868/s0002333718010131

Cited by 4 publications

(1 citation statement)

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“…Необходимым условием для применения данного метода является наличие выборки не менее чем из 80-100 образцов, что в нашем случае соблюдено. Во многих работах, например в [27], показаны удачные практические примеры использования данного метода, а в работе [34] показана хорошая сходимость расчетов по методу E-I с результатами экспериментов по переосаждению осадочных пород. Наши расчеты показывают, что величина занижения наклонения составляет менее 1° (рис.…”

Section: результаты исследованийunclassified

Paleomagnetism of the Middle Jurassic Sedimentary Rocks of the Elgon Formation of the Ulban Terrane

Peskov¹,

Kudymov²,

Zyabrev³

et al. 2021

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The paper presents new findings of paleomagnetic studies on Middle Jurassic sedimentary rocks of the Elgon Formation of the Ulban Terrane from coastal outcrops along the Ulban Bay (53.5°N, 137.7°E). Demagnetization yielded a pre-folding characteristic component of magnetization. No inclination shallowing effect for the characteristic magnetization vector was revealed in sandstone specimens of the Elgon Formation. The coordinates of the paleomagnetic pole and the paleolatitude at which the studied rocks deposited were calculated: Plat = -34.3 (34.3)°; Plong = 161.2 (341.2)°; dm = 2.7 dp = 5.3, paleolatitude = 0.1° (+2.7°/-2.6°) S. The acquired paleomagnetic data show evidence for the deposition of rocks of the Ulban Terrane in the Middle Jurassic at the boundary between the Asian paleocontinent and the Paleo-Pacific which later formed part of the Sikhote-Alin Orogenic Belt.

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Section: результаты исследованийunclassified

Paleomagnetism of the Middle Jurassic Sedimentary Rocks of the Elgon Formation of the Ulban Terrane

Peskov¹,

Kudymov²,

Zyabrev³

et al. 2021

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Paleomagnetism and Cyclostratigraphy of the Permian-Triassic Boundary Interval of the Staroe Slukino Section, Vladimir Region

Fetisova,

Veselovskiy,

Sirotin

et al. 2023

Fizika zemli

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The paper presents the results of paleomagnetic, rock magnetic, and cyclostratigraphic studies of continental red beds that compose the Permian-Triassic boundary interval of the Staroe Slukino section in the Vladimir Region, Russia. Based on the directions of the characteristic components of the natural remanent magnetization of the studied rocks in the sampled stratum, the intervals of normal and reverse polarity related to the regional magnetozones r2RnP, r3RnP, and N3P-T were identified. Within the r3RnP zone, there is an interval of anomalous paleomagnetic directions, which has similar characteristics to those identified earlier in the coeval intervals of the Nedubrovo, Zhukov Ravine, and Okskiy Siyezd sections. Revising the biostratigraphy allows us to assume that the two zones of anomalous paleomagnetic directions in the composite magnetic polarity scale of the upper Permian of the Russian Platform are a reflection of the same epoch of an anomalous geomagnetic field configuration. It is estimated by the cyclostratigraphic method that the studied 16 m interval of the Staroe Slukino section took 900±20 thousand years to accumulate, which limits the duration of the geomagnetic field anomalous state near the Permian-Triassic boundary to ~110 000 years. A new Permian-Triassic (~252 Ma) paleomagnetic pole of the East European Platform is calculated: plat = 36.3°; plong = = 155.0°; dp/dm = 2.8°/4.8°.

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Magnetostratigraphy of the Permian–Triassic Boundary in the Lower Reaches of the Vetluga River, East European Platform, Nizhny Novgorod Region

Fetisova,

Veselovskiy,

Golubev

et al. 2024

Fizika zemli

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We present the results of detailed paleomagnetic studies of six Permian-Triassic boundary sections in the central part of the East European Platform, located in the lower reaches of the Vetluga River: Astashikha, Voskresenskoe, Znamenskoe, Prudovka, Sosnovka, and Sukhoborka. The paleomagnetic data, which meet the modern quality standards for laboratory processing, together with the results of biostratigraphic studies, allow for the development and substantiation of magnetostratigraphic scales for each section, as well as for their correlation and the construction of a magnetic polarity scale for the Permian-Triassic sedimentary complex of the Vetluga River. Rock-magnetic characteristics are determined for each of the studied sections, and paleomagnetic poles of the East European Platform are calculated for the Late Permian and Permian-Triassic boundary.

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НОВЫЙ Пермо-Триасовый ПАЛЕОМАГНИТНЫЙ ПОЛЮС Восточно-Европейской ПЛАТФОРМЫ, ВЫЧИСЛЕННЫЙ С УЧЕТОМ ЗАНИЖЕНИЯ НАКЛОНЕНИЯ В ОСАДОЧНЫХ ПОРОДАХ, "Физика Земли"

Cited by 4 publications

References 0 publications

Paleomagnetism of the Middle Jurassic Sedimentary Rocks of the Elgon Formation of the Ulban Terrane

Paleomagnetism of the Middle Jurassic Sedimentary Rocks of the Elgon Formation of the Ulban Terrane

Paleomagnetism and Cyclostratigraphy of the Permian-Triassic Boundary Interval of the Staroe Slukino Section, Vladimir Region

Magnetostratigraphy of the Permian–Triassic Boundary in the Lower Reaches of the Vetluga River, East European Platform, Nizhny Novgorod Region

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