英云闪长岩
英云闪长岩(英語:tonalite)是一种长英质深成火成岩,有显晶石纹理。长石属于斜长石(一般是奥长石和中长石),碱性长石占长石材料的占比低于10%。总的石英-碱性长石-斜长石-似长石成分(QAPF)中, 石英(SiO2)占比超过20%。[1][2]共生矿物常见的有角闪石和黑云母。[3]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Tonalite.png/220px-Tonalite.png)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/2e/Qapf_tonalite.png/220px-Qapf_tonalite.png)
在较老的文献中,英云闪长岩与石英闪长岩是同一种岩石;现行的国际地质科学联盟QAPF分类图表对英云闪长岩的定义中要求其含高于20%的石英,而石英闪长岩的石英含量是5-20%。[1]
Gerhard vom Rath首次于1864年描述了这种岩石。[4]石英二長岩由A. Cathrein于1890年描述,是一种含正长石(可能是花岗闪长岩)的英云闪长岩,后来才指石英二长石。[5]
参考文献
编辑- ^ 1.0 1.1 Le Bas, M. J.; Streckeisen, A. L. The IUGS systematics of igneous rocks. Journal of the Geological Society. 1991, 148 (5): 825–833. Bibcode:1991JGSoc.148..825L. CiteSeerX 10.1.1.692.4446 . S2CID 28548230. doi:10.1144/gsjgs.148.5.0825.
- ^ Rock Classification Scheme - Vol 1 - Igneous (PDF). British Geological Survey: Rock Classification Scheme. 1999, 1: 1–52 [2023-01-01]. (原始内容存档 (PDF)于2018-03-29).
- ^ Allaby, Michael. tonalite. A dictionary of geology and earth sciences Fourth. Oxford: Oxford University Press. 2013. ISBN 9780199653065.
- ^ Jackson, Julia A. (编). tonalite. Glossary of geology. Fourth. Alexandria, Virginia: American Geological Institute. 1997. ISBN 0922152349.
- ^ Streckeisen, A. To each plutonic rock its proper name. Earth-Science Reviews. 1976-03-01, 12 (1): 1–33. doi:10.1016/0012-8252(76)90052-0.
- ^ Jackson 1997,"trondhjemhite".
- ^ Castro, Antonio. Tonalite–granodiorite suites as cotectic systems: A review of experimental studies with applications to granitoid petrogenesis. Earth-Science Reviews. 2013-09, 124: 68–95. doi:10.1016/j.earscirev.2013.05.006.