【摘 要】
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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 represe
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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
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