火山颈
- 网络volcanic neck;neck;volcanic plug
火山颈-
潜花岗班岩为火山颈相，其锆石U-Pb同位素年龄为32±0.2Ma。
Hidden granite porphyry is of volcanic neck facies and gives isotopic age of zircon being 32 ± 0.2 Ma .
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火山岩15亚相中能够成为Ⅰ类储层的通常仅4种：火山颈，热碎屑流，喷溢相上部和侵出相内带亚相。
Only four of the 15 volcanic sub-facies can form high-quality volcanic reservoirs , which include volcanic neck , pyroclastic-bearing lava flow , upper effusive and inner extrusive sub-facies .