ThereisahugeandimportantmeridinntectoniczonelnHebci-Shandong-AnhuiProvinces(castcrnNorthChina),especlallytbcoldstructuresfromnorthtosouth.Becauseitsmainpartishiddenunder-neath,andtheoutcroppingsweredisplacedandreformed.thetectoniczonecannotbenoticedforalongtime,andthemineraltalngprocessinthi8tectoni