ignimbrite ['ignimbrait]
- ignimbrite的基本解释
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n.
[地]熔结凝灰岩, 熔灰岩
- 更多网络例句与ignimbrite相关的网络例句 [注：此内容来源于网络，仅供参考]
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These eruptions have included: Hawaiian fire-fountaining, Strombolian explosions, and Plinian falls and ignimbrite.
这些喷发包括：夏威夷火，爆炸，瀑布。
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Parisite is hosted in the granular rhyolite, rhyolite and rhyolitic ignimbrite. The host rocks were formed in Late Early Cretaceous Epoch buried to depth of
氟碳钙铈矿的寄主岩为球粒流纹岩、流纹岩、流纹质熔结凝灰岩、流纹质凝灰岩，其寄主岩分布深度为2930~3830m，形成时代为早白垩世晚期。
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The Shengmikeng vein-type lead-zinc deposit is located in Huanggangshan volcano-tectonic depression of the Mesozoic volcanic belt in Northern Wuyi.The ore featured by veinlets and disseminations is hosted both inside the fault zone in the upper Jurassic Ehuling ignimbrite and the potassic trachyte porphyry.
摘 要：生米坑铅锌矿床位于北武夷中生代火山岩带的黄岗山火山盆地内，已知铅锌矿体呈脉状产于侏罗系上统鹅湖岭组流纹质熔结凝灰岩的断裂内，或呈细脉——浸染状分布于钾质粗面斑岩内，发育钾长石化、绿泥石化、硅化等蚀变。
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Geochemical characteristics indicate S-type granites and volcanic rocks depleted in sodium and enriched in potassium, with 62.42%～78.02% w(SiO2), 7.66%～9.13% w(K2O+Na2O), 1.18～2.62 w(K2O)/w(Na2O), and Rittmann index δ of 1.67～3.78. They are enriched in LREE with an average LREE/HREE ratio of 10.94×10-6, and generally depleted Eu with an minimum δEu less than 0.31 especially in the ignimbrite and biotite granite, which have experienced a significant process of separation and crystallization of plagioclases.ΣREE at the main stage of the magmatic activity decreases with time.
地球化学特征显示矿区火山——侵入岩属于贫钠富钾的S型花岗岩，其w(SiO2)值为62.42%～78.02%、w(K2O +Na2O)值为7.66%～9.13%、w(K2O)/w(Na2O)比值为1.18～2.62、里特曼指数δ为1.67～3.78；矿区岩石LREE/HREE比值平均为10.94×10-6，属于轻稀土富集型；Eu普遍亏损，特别是熔结凝灰岩、黑云母花岗岩δEu＜0.31，表明经历了显著的斜长石的分离结晶作用；自早至晚主阶段岩浆活动稀土总量逐渐降低。
- 更多网络解释与ignimbrite相关的网络解释 [注：此内容来源于网络，仅供参考]
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ignimbrite：熔结凝灰岩
火山碎屑流(pyroclastic flow),热云(nuee ardente),热云岩(ignimbrite),阿苏熔岩(aso lava),砂流(sand flow)等,国内较通用的译名为熔结凝灰岩或火山灰流凝灰岩,更多的趋于使用熔结凝灰岩(ignimbrite).它主要由小于2mm的塑性玻屑和岩屑组成,
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ignimbrite：中酸凝灰岩
火山碎屑流堆积形成中酸凝灰岩(ignimbrite),其机制如图七所示. 最大之特色在於碎片与其中之凝灰质物焊接在一起. 火山主要分为复式火山(composite volcano)和盾式火山(shield volcano). 复式火山多为中、酸性岩质(台湾北部火山属之);
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ignimbrite; weld tuffs：熔结凝灰岩;流纹岩状凝灰岩
火成构造 igneous structure | 熔结凝灰岩;流纹岩状凝灰岩 ignimbrite; weld tuffs | 燃点 ignition temperature
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welded tuff,ignimbrite：熔结凝灰岩
熔结凝灰结构 welded tuff texture | 熔结凝灰岩 welded tuff,ignimbrite | 熔壳 fusion crust