Geological setting and lithological features of Cenozoic sediments in Ebelyakh Bay (Laptev Sea)

Materials of bottom sampling and drilling on Ebelyakh Bay, the Cape Svyatoi Nos area, and southern part of the Dmitry Laptev Strait by researchers from VNIIOkeangeologiya during the past 60 years and data on the geological setting of the Chokhchur–Chokurdakh zone (Ebelyakh Bay included) were also ex...

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Bibliographic Details
Published in:Lithology and Mineral Resources 2016-05, Vol.51 (3), p.161-178
Main Authors: Smirnov, A. N., Kosheleva, V. A.
Format: Article
Language:English
Subjects:
Bottom sampling
Cassiterite
Cenozoic
Cenozoic Era
Coastal
Coastal zone
Earth and Environmental Science
Earth Sciences
Freshwater
Geological time
Geology
Holocene
Jurassic
Lithology
Metamorphic rocks
Mineral Resources
Mineralogy
Ocean bottom
Pleistocene
Pliocene
Quaternary
River discharge
River flow
Sampling
Sedimentology
Sediments
Terraces
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Summary:Materials of bottom sampling and drilling on Ebelyakh Bay, the Cape Svyatoi Nos area, and southern part of the Dmitry Laptev Strait by researchers from VNIIOkeangeologiya during the past 60 years and data on the geological setting of the Chokhchur–Chokurdakh zone (Ebelyakh Bay included) were also examined. The geology and lithology of Cenozoic sediments in the water area of the bay and adjacent land were scrutinized to elucidate mineral resources in the Earth’s interior in the study area. Analysis of the Upper Jurassic–Holocene summary section shows that terrigenous material was derived from (i) coastal zones composed of granitoid or contact metamorphic rocks, (ii) Quaternary friable sediments of marine terraces and beaches, (iii) submarine rises, and (iv) river discharge. It is shown that cassiterite is associated with the Pliocene–lower Pleistocene Serkino horizon and Holocene sediments. New promising cassiterite areas have been revealed. The results suggest that prospecting for tin placers should be continued at Ebelyakh Bay.
ISSN:0024-4902
1608-3229
1573-8892
DOI:10.1134/S0024490216030056