A NATURAL OIL SEEP IN THE FLOODPLAIN OF THE AMGA RIVER (Siberian Platform)
A.F. Safronov, O.N. Chalaya, I.N. Zueva, A.R. Aleksandrov
a:2:{s:4:"TEXT";s:130:"Institute of Oil and Gas Problems, Siberian Branch of the Russian Academy of Sciences, ul. Oktyabr’skaya 1, Yakutsk, 677980 Russia";s:4:"TYPE";s:4:"text";}
Keywords: Natural oil seep, chemical-bitumen analysis, chloroform-extracted bitumens, 12- and 13-methylalkanes
Abstract
A natural oil seep has been revealed in the floodplain of the middle stream of the Amga River, in zone of the exposure of Middle Cambrian sediments. A distinctive feature of saturated hydrocarbons of this oil is the absence of biomarkers of the series 12- and 13-methylalkanes, biomarkers that are present in oils of the Vendian-Cambrian deposits of the Nepa-Botuobiyan petroliferous province. In this feature the studied seep oil is similar to the Middle Cambrian oil from hydrogeologic wells (1-P and 1-T) drilled earlier downstream of the Amga River.
DOI: http://dx.doi.org/10.1016/j.rgg.2014.10.006
|
