Morphology of seamounts at the Mendeleev Rise, Arctic Ocean

Polar research

Andrey Morozov¹  Sergey Kashubin²  Sergey Shokalsky³  Valery Kaminsky⁴  Alexey Krylov⁴  Pavel Rekant⁴  Evgeny Gusev⁵ 

[1] St Petersburg State University, Institute of Earth Sciences, St Petersburg, Russia;A.P. Karpinsky Russian Geological Research Institute, Department of composite geological mapping, St Petersburg, Russia;Federal Agency on Mineral Resources, Geological Foundations Department, Moscow, Russia;I.S. Gramberg All-Russian Scientific Research Institute for Geology and Mineral Resources of the Ocean, Geological mapping department, St. Petersburg, St Petersburg, Russia;I.S. Gramberg All-Russian Scientific Research Institute for Geology and Mineral Resources of the Ocean, Geological mapping department, St. Petersburg, St Petersburg, RussiaCorrespondence

关键词: Ocean geomorphology;    submarine landscapes;    slope structures;    Arctic Ocean;    Mendeleev Ridge;   

DOI  :  10.1080/17518369.2017.1298901

学科分类：自然科学（综合）

来源: Co-Action Publishing

【 摘 要 】

ABSTRACTGeological and geophysical studies undertaken during the Russian Arktika-2012 Expedition of 2012 produced evidence of basement outcrops on the steep slopes of the Mendeleev Rise seamounts. Observations of the outcrops from research submarines showed that part of the steep slopes interpreted as basement outcrops based on seismic data were overlain by a light sediment cover. The actual areas of the basement outcrops are therefore much less than indicated by the seismic data alone. The outcrops found are of 5–10 to 100–200 m and are often stretched along some hypsometric level or arranged obliquely, crossing a slope at an angle to the horizon. The rocks are massive and layered, often strongly weathered, cavernous, with visible fissures and extended by dislocations.

【 授权许可】

CC BY-NC