Some parameters of distribution of hydrocarbon paraffin fraction in bottom sediments of the Kara Sea and the Yenisey estuary@en

During Cruise 49 of R/V Dmitry Mendeleev in the Kara Sea (August-September, 1993) chemical-bitumenological studies of bottom sediments were carried out. Hydrocarbons were analyzed by gas-liquid chromatography. It was found on the basis of distribution of n-alkanes and isoprenoids (pristan and phytan) that organic matter is mainly terrigenous consisting of higher plant remains.1993年8月至9月，科研团队在喀拉海执行“德米特里·门捷列夫号”（R/V Dmitry Mendeleev）第49航次任务期间，对海底沉积物开展了化学-沥青学研究。研究采用气液色谱法（gas-liquid chromatography）对烃类样品进行分析。基于正构烷烃（n-alkanes）与类异戊二烯烃（isoprenoids，涵盖姥鲛烷（pristan）和植烷（phytan））的分布特征，研究结果表明，该区域有机质主要为陆源成因，其组成以高等植物残体为主。