the distal zone is characterized by pyroclastic flow deposits.
远极地带的特点是有火成碎屑沉积物。
the distal zone is characterized by pyroclastic flow deposits.
远极地带的特点是有火成碎屑沉积物。
The strata strike NE,and its rock association are consisted of pyroclastic sedimentary rock,micrite and pyroclastic rocks,and containts brachiopoda,coral,bryozoan.
时代属于中泥
期,大体相当于
菲尔
-吉维特,
属为大民山组。
The transitional zone is characterized by interbedding of pyroclastic and sedimentary rocks,and a little volcanic lava rocks was also found in the strata.
过渡区岩性以火山碎屑岩与沉积岩互层为特征，夹少量火山熔岩；
The ore-bearing beds have a bimodal rock association and exhibit assembly characteristics of pyroclastic rock, orebody and exhalite.
含矿岩系为双峰岩石组合，具有火山碎屑岩-矿体-喷气岩“三位一体”特徵。
, volcanic lava and pyroclastic rocks, of which the lithophysa rhyolite, pellets rhyolite and ignimbrite are favorable reservoirs.Lithofacies can be divided into 5 facies and 16 subfacies.
研究表明：该区火山岩划分为火山熔岩和火山碎屑岩两大类，其中石泡流纹岩、球粒流纹岩及熔结凝灰岩为有利储层。
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