<page_title> Qinling orogenic belt </page_title> <section_title> North-South China Block </section_title> <table> <cell> Ophiolite Volcanic and sedimentary rock <col_header> Major Geology(rock type) </col_header> </cell> <cell> Early Cambrian - Early Silurian Early Paleozoic <col_header> Formation time </col_header> </cell> </table>
Ophiolites were formed during early Cambrian to early Silurian.