First Data about Manifestation of the Upper Cretaceous Volcanism of the Transition Zone «Siberian Platform – Verkhoyansk-Kolyma Folded Area»

Kostin A.V., Grinenko V.S., Oleinikov O.B., Jelonkina M.S., Krivoshapkin I.I., Vasiljeva A.E. 

On a base of the analysis of a shaded relief, comparison with the satellite images of high resolution and a certification field work on the Leno-Viluy watershed in the transition zone of the «Siberian platform – Verkhoyansk-Kolyma folded area» we revealed a previously unknown volcanic cone structure and associated fields of lava, lava breccia and volcanic slag. The volcanic cone is located on the Lower-Upper Cretaceous reduced sediments (104-93.5 million years) of Hatyrikskaya and Agrafenovskaya suites, respectively, the age of the volcanism is not older than the Upper Cretaceous. Preliminary chemical and mineralogical analysis of the volcanic rocks allowed to attribute them to a dacite complex with large xenoliths and blocks of anorthosites.

Key words: GIS, shaded relief, dacites, anorthosites, volcanism, Upper Cretaceous, Leno-Viluy watershed, Yakutia.

 Science and Education, 2015, No.1, pp.30-36