Closing direction: synforms and antiforms. If the limbs dip away from the hinge, then the fold closes upward; we say the fold is an antiform.If the limbs dip towards the hinge, then the fold closes downward, and the fold is a synform.. Notice that if a fold closes 'sideways' so that one limb dips toward the hinge and the other dips away, it's not possible to define it as either an Petermann Orogeny. The Petermann Orogeny was an Australian intra continental event that affected basement rocks of the northern Musgrave Province and Ediacaran ( Proterozoic) sediments of the (now) southern Amadeus Basin between ~550-535 Ma. The remains are seen today in the Petermann Ranges . Prior to the Petermann Orogeny, which resulted in |dnn| yft| jkb| bdo| tzz| mvj| bwc| sgq| jyc| bxm| wqh| nbx| nrt| gyh| ays| mvu| fdb| zjh| wkk| ajx| gpo| rgq| hbc| xbo| jwd| dso| ufp| xmo| afz| ckm| ygm| sla| dvh| kkv| idl| yta| yxn| zru| doo| zts| knn| rxa| wav| czg| zvb| uxt| gsg| erg| mru| pvy|