English: TheYixian Formation (Chinese: 义县组; Pinyin: yì xiān zǔ) is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans 11 million years during the early Cretaceous period. It is known for its fossils, and is mainly composed of basalts interspersed with siliciclastic sediments.
<nowiki>Formación de Yixian; Formation Jehol; formació de Yixian; Yixian-Formation; Formação Yixian; 義縣組; Yixian-formationen; 義県層; Formasi Yixian; תצורת יישיין; Jehol-groep; 义县组; Їсянь; souvrství I-sien; formación de Yixian; تكوين ييكسيان; 义县组; Yixian Formation; geological formation in China; formation géologique chinoise; geologická formace; תצורה גאולוגית בצפון סין עשירה במאובנים; Formacion de Yixian; 義県累層; 大王杖子層; 宜県層; Yixian; Yixian Formation</nowiki>