摘要
Dikeswarmsaregenerallyascribedtointrusionofmantle-sourcemagmaresultfromextension.BasicdikeswarmsaroundtheShanxi-Hebei-InnerMogoliabordersinthenorthernperipheralareaoftheNorthChinaCratoncanbedividedintofiveagegroupsaccordingtoisotopicdating:1800-1700Ma,800-700Ma,230Ma,140-120Ma,and50-40Ma.Geological,petrologicalandisotopegeochemicalfeaturesofthefivegroupsisinvestigatedinordertoexplorethevariationofthemantlematerialcompositionintheconcernedareawithtime.AndthevariousextensionalactivitiesreflectedbythefivegroupsofdikeswarmsarecomparedwithsomeimportanttectoniceventswithintheNorthChinaCratonaswellasaroundtheworldduringthesameperiod.
出版日期
2004年01月11日(中国期刊网平台首次上网日期,不代表论文的发表时间)