Abstract:

Researched to start from geological—structural background in Heilongjang eastern area，base rockconstructing，granite distribution，deep—large break characteristic is analyzed，Mesozoic—Neozoic Structural stress—field is restored bv using the three method—geometric parameter of structural formative—tracks，sonic—discharge determine and limiter dimension nuneric imitate．A new viewpoint the early cretaceous structural stress—fields are unproportional in westem zone．middle zone，eastern zone，that late cretaceous and old tertiary structural stress—fields are gY
ral—torsional and that new tertiary structural crush—stress distributed at northwest～southeast direction is suggested．The aera s geological dynamic condition is analyzed； structural occurred，developed and evolved special feature is summed up．Structural information iS provided for analyzing form —mine in the area．

Key words: Hei longjang, Dynamic condition, Structural stress—field