Abstract: In view of types, abundances and thermal evolution properties of organic matter, an evaluation of the hydrocarbon source rock within Jurassic stratigraphic sequence framework in northeastern area of Tarim basin is made, ascertaining the source potential in Jurassic hydrocarbon source rocks lie in unmatured -matured stage, where low and high level system tracts have organic matters of too low abundance, with poor source potential; while lacustrine system tract has more abundant hydrocarbon source rocks consisting mainly of medium and fair source rocks as well as coal measures, with good source potentials.

Key words: Tarim basin, Northeast, Sequence stratigraphy, Source bed, Evaluation