Structure, petrology, and genesis of Cenozoic volcanism, Taupo Volcanic Zone, New Zealand—a review
Structure, petrology, and genesis of Cenozoic volcanism, Taupo Volcanic Zone, New Zealand—a review
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新西兰陶波火山带新生代火山的结构、岩石学和成因——综述
DOI：
10.1080/00288306.1979.10424173
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发表时间：
1979
影响因子：
2.2
通讯作者：
J. Cole
中科院分区：
文献类型：
--
作者：
J. Cole
摘要 陶波火山带向东北延伸约 300 公里，横跨新西兰北岛中部。该区域内有五个火山中心： 汤加里罗 (Tongariro)，其中 95% 以上为安山岩；陶波、马罗阿和奥卡泰纳是流纹岩中心，每个都可能与多个火山口塌陷有关；罗托鲁瓦是一个简单的塌陷结构，位于陶波火山带的西侧。陶波火山带的熔岩均为钙碱性。有两种类型的玄武岩：汤加里罗火山中心的低铝玄武岩和罗托鲁瓦-陶波地区的高铝玄武岩。安山岩可分为“正常”（57-63% SiO2）和低硅（53-57% SiO2）类型。辉石低硅安山岩可能代表“正常”安山岩的堆积部分，但橄榄石低硅安山岩可能源自单独的较年轻的岩浆。还可以区分两种类型的英安岩。丰盛湾熔岩呈现出从英安岩到安山岩的完整渐变，来自罗托鲁瓦-陶波地区的熔岩......
Abstract The Taupo Volcanic Zone extends for approximately 300 km north-eastwards across the central North Island, New Zealand. Within the zone are five volcanic centres: Tongariro, which includes over 95% andesites; Taupo, Maroa, and Okataina, rhyolitic centres, each probably associated with multiple caldera collapse; and Rotorua, a simple collapse structure, sited on the western side of Taupo Volcanic Zone. The lavas of the Taupo Volcanic Zone are all calc-alkaline. Two types of basalt occur; a low-alumina basalt within the Tongariro Volcanic Centre and a high-alumina basalt in the Rotorua-Taupo area. Andesites can be divided into “normal” (57–63% Si02) and low-Si (53–57% Si02) types. Pyroxene low-Si andesites probably represent cumulate fractions of the “normal” andesite, but olivine low-Si andesite may be derived from a separate younger magma. Two types of dacite can also be distinguished. Bay of Plenty lavas show a complete gradation from dacite to andesite, and lavas from the Rotorua-Taupo region sh...