【摘 要】
：
The Middle Triassic Ladinian-Upper Triassic Norian series in the Mesozoic-Cenozoic Ruoergai basin of Songpan area is characterized of large thick shallow marine-deep marine fine grained clastic.The st
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The Middle Triassic Ladinian-Upper Triassic Norian series in the Mesozoic-Cenozoic Ruoergai basin of Songpan area is characterized of large thick shallow marine-deep marine fine grained clastic.The strata are regionally unconformable between each adja
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