英雲閃長岩
英雲閃長岩(英語:tonalite)是一種長英質深成火成岩,有顯晶石紋理。長石屬於斜長石(一般是奧長石和中長石),鹼性長石占長石材料的占比低於10%。總的石英-鹼性長石-斜長石-似長石成分(QAPF)中, 石英(SiO2)占比超過20%。[1][2]共生礦物常見的有角閃石和黑雲母。[3]
在較老的文獻中,英雲閃長岩與石英閃長岩是同一種岩石;現行的國際地質科學聯盟QAPF分類圖表對英雲閃長岩的定義中要求其含高於20%的石英,而石英閃長岩的石英含量是5-20%。[1]
Gerhard vom Rath首次於1864年描述了這種岩石。[4]石英二長岩由A. Cathrein於1890年描述,是一種含正長石(可能是花崗閃長岩)的英雲閃長岩,後來才指石英二長石。[5]
參考文獻
- ^ 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]. (原始內容存檔 (PDF)於2018-03-29).
- ^ Allaby, Michael. tonalite. A dictionary of geology and earth sciences Fourth. Oxford: Oxford University Press. 2013. ISBN 9780199653065.
- ^ Jackson, Julia A. (編). 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.