Abstract
AbstractSpecific data is presented on structure and age of the sedimentary formations within the lower structural unit (Erdagou Formation) in the Taukha terrane, southern Sikhote–Alin, Russia. According to lithological research of this unit exposed in the Benevka River area, the Erdagou Formation represents a deformed fragment of so‐called Oceanic Plate Stratigraphy sequence. The Erdagou Formation includes all lithological varieties of rocks from pelagic (cherts and clayey cherts) and hemipelagic (siliceous mudstones) up to oceanic‐margin (mudstones, siltstones, and turbidites) deposits. Based on the results of radiolarian biostratigraphic research of the rocks, the age of the cherts is from middle Oxfordian to the beginning of Berriasian. Transitive layers between cherts and terrigenous rocks (turbidites), namely siliceous mudstones, are early Berriasian in age. The lower part of the terrigenous section is characterized by late Berriasian–late Valanginian radiolarians. Taking these data into account, it is plausible that the accretion of the given part of the paleo‐oceanic plate occurred post‐Valanginian.
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