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Permian Terrigenous Deposits of the Omolon Massif: Formation Settings and Source Area (According to Geochemical Data)
Russian Journal of Pacific Geology ( IF 0.9 ) Pub Date : 2023-05-03 , DOI: 10.1134/s1819714023020021
I. V. Brynko , T. I. Mikhalitsyna , A. S. Biakov , I. L. Vedernikov

This article presents the results of major, trace, and rare-earth element study of the Permian terrigenous rocks of the southern part of the Omolon Massif. The lithochemical studies showed that sediments were accumulated in a warm climate with episodes of some cooling. The Omolon Basin had a normal salinity, with alternating oxic–anoxic environments. The interpretation of the obtained data indicates that the deposits accumulated in the basin are associated with the marginal continental island arc (Okhotsk–Taigonos volcanic arc). Probable sources were basic and intermediate arc volcanics, as well as acid igneous rocks (volcanics of the Kedon Group) and metamorphic complexes of the basement of the Omolon Massif.



中文翻译:

Omolon 地块的二叠纪陆源矿床:地层背景和源区(根据地球化学数据)

本文介绍了 Omolon 地块南部二叠纪陆源岩的常量、痕量和稀土元素研究结果。岩石化学研究表明,沉积物是在温暖的气候中积累的,并伴有一些降温。Omolon 盆地具有正常盐度,具有交替的好氧-缺氧环境。对获得的数据的解释表明,盆地中积累的沉积物与边缘大陆岛弧(鄂霍次克-泰戈诺斯火山弧)有关。可能的来源是基性和中弧火山岩,以及酸性火成岩(Kedon 群的火山岩)和 Omolon 地块基底的变质复合岩。

更新日期:2023-05-04
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