The Middle Jurassic system is well developed and exposed in western Liaoning Province including two formations,the Tiaojishan Formation and the Haifanggou Formation.The Tiaojishan Formation is represented by intermedi...The Middle Jurassic system is well developed and exposed in western Liaoning Province including two formations,the Tiaojishan Formation and the Haifanggou Formation.The Tiaojishan Formation is represented by intermediate extrusive and pyroclastic rocks,with intercalations of basic volcanic and sedimentary rocks.Diverse silicified wood specimens were recovered from this formation in Lamaying,展开更多
文摘The Middle Jurassic system is well developed and exposed in western Liaoning Province including two formations,the Tiaojishan Formation and the Haifanggou Formation.The Tiaojishan Formation is represented by intermediate extrusive and pyroclastic rocks,with intercalations of basic volcanic and sedimentary rocks.Diverse silicified wood specimens were recovered from this formation in Lamaying,
