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

Autor: A. V. Kudymov, A. Yu. Peskov, M. V. Arkhipov, A. N. Didenko, S. V. Zyabrev, A. I. Tikhomirova, A. S. Karetnikov
Rok vydání: 2021
Předmět:
Zdroj: Russian Journal of Pacific Geology. 15:175-187
ISSN: 1819-7159
1819-7140
DOI: 10.1134/s1819714021030052
Popis: The paper presents the first findings of paleomagnetic studies on Middle Jurassic sedimentary rocks of the Elgon Formation of the Ulban Terrane from the coastal outcrops along the Ulban Bay (53.5° N, 137.7° E). Demagnetization yielded a ChRM component of the pre-folding age. No inclination shallowing effect for the ChRM vector was revealed in sandstone specimens of the Elgon Formation. The paleomagnetic pole coordinates 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 are evidence of the deposition of the 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.
Databáze: OpenAIRE
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