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Fine-grained ("volcanic") normal crystalline igneous rock

A rock classification type
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09807960017271952561031.jpg
Rhyolite

Mount Hay, Wycarbah, Rockhampton Region, Queensland, Australia
05096440017271952562451.jpg
Dolerite

Haslestad Quarry, Hof, Holmestrand, Vestfold, Norway
03901170017271952556802.jpg
Alkali-feldspar-trachyte

Wyoming, USA
09807960017271952561031.jpg
Rhyolite

Mount Hay, Wycarbah, Rockhampton Region, Queensland, Australia
05096440017271952562451.jpg
Dolerite

Haslestad Quarry, Hof, Holmestrand, Vestfold, Norway
03901170017271952556802.jpg
Alkali-feldspar-trachyte

Wyoming, USA
09807960017271952561031.jpg
Rhyolite

Mount Hay, Wycarbah, Rockhampton Region, Queensland, Australia
05096440017271952562451.jpg
Dolerite

Haslestad Quarry, Hof, Holmestrand, Vestfold, Norway
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About Fine-grained ("volcanic") normal crystalline igneous rockHide

Fine-grained ("volcanic") normal crystalline igneous rocks are a subdivision of normal crystalline igneous rocks that are dominated by mineral grains mostly <2mm, not readily identifiable to the naked eye. The subtypes usually must be petrographically and/or chemically analysed and plotted on QAPF or TAS diagrams to characterise them precisely.


Unique IdentifiersHide

Mindat ID:
48444
Long-form identifier:
mindat:1:1:48444:8

Classification of Fine-grained ("volcanic") normal crystalline igneous rockHide

QAPF_V_.png

The QAPF diagram breaks fine-grained crystalline igneous rocks down into 15 groups.


1 Not Defined
2 Alkali-Feldspar Rhyolite
3 Rhyolite
4 Dacite
5 Plagidacite
6 Alkali-Feldspar Trachyte
6* Quartz-Bearing Alkali-Feldspar Trachyte
6' Foid-Bearing Alkali-Feldspar Trachyte
7 Trachyte
7* Quartz-Trachyte
7' Foid-Bearing Trachyte
8 Latite
8* Quartz-Latite
8' Foid-Bearing Latite
9 Andesite
9* Quartz-Bearing Andesite
9' Foid-Bearing Andesite
10 Basalt
10* Quartz-Bearing Basalt
10' Foid-Bearing Basalt
11 Phonolite
12 Tephritic Phonolite
13 Phonolitic Tephrite / Phonolitic Basanite
14 Tephrite / Basanite
15a Phonolitic Foidite
15b Tephritic Foidite
15c Foidite

TAS_.png

The TAS classification for fine-grained crystalline igneous rocks.






F Foidite
Pc Picrite
B Basalt
O1 Basaltic Andesite
O2 Andesite
O3 Dacite
R Rhyolite
U1 Tephrite, basanite
U2 Phonotephrite
U3 Tephryphonolite
Ph Phonolite
S1 Trachybasalt
S2 Basaltic Trachyandesite
S3 Trachyandesite
T Trachyte

Sub-divisions of Fine-grained ("volcanic") normal crystalline igneous rockHide

View all 144 analyses with additional filters.

Age distributionHide

Recorded ages:
Paleoproterozoic to Quaternary : 1837 ± 8 Ma to 0 Ma - based on 144 recorded ages.
Sample ages:
Sample IDRecorded ageGeologic TimeDating method
1.00005 MaAnthropocene
20.11 ± 0.10 MaPleistoceneK-Ar
30.6 to 0.0017 MaQuaternaryK-Ar
41.0 ± 0.1 to 0.1 MaPleistoceneK-Ar from Mount Waesche
52.3 ± 0.2 MaPleistoceneK-Ar
62.70 MaPlioceneK-Ar
73.8 ± 0.2 MaPlioceneK-Ar
86.1 MaMioceneK-Ar
99.6 ± 1.0 MaMioceneK-Ar
1011.9 MaMioceneK-Ar
1115.47 to 0.69 MaCenozoicK-Ar
1221.3 ± 0.30 to 20.3 ± 0.60 MaMioceneK-Ar whole rock
1323 to 17 MaMioceneK-Ar
1428.6 to 20.0 MaCenozoicK-Ar
1537 MaEoceneK-Ar whole rock
1662.3 ± 1.4 to 20.0 ± 0.5 MaCenozoicAr/Ar
17120 to 85 MaCretaceousK-Ar
18138.1 ± 1.2 MaEarly/Lower CretaceousRb-Sr whole rock
19191 to 120 ± 10 MaMesozoic
201837 ± 8 MaOrosirianU/Pb
Sample references:
IDLocalityReferenceNotes
1Paricutin volcano, Uruapan Municipality, Michoacan, Mexico
Luhr, J. F. (2001). Glass inclusions and melt volatile contents at Paricutin Volcano, Mexico. Contributions to Mineralogy and Petrology, 142(3), 261-283.
2Bouvet Island, Norway
Prestvik, Tore, Winsnes, T. S. (1981) Geology of Bouvetøya, South Atlantic. Norsk polarinstitutt - Skrifter 175 p.41-68.
3Wudalianchi volcanic cluster, Wudalianchi City, Heihe, Heilongjiang, China
Zhang, M., Suddaby, P., Thompson, R. N., Thirlwall, M. F., & Menzies, M. A. (1995). Potassic volcanic rocks in NE China: geochemical constraints on mantle source and magma genesis. Journal of Petrology, 36(5), 1275-1303.
4Mount Waesche and Chang Peak, Executive Committee Range, Marie Byrd Land, West Antarctica, Antarctica
LeMasurier, W. E., & Rex, D. C. (1989). Evolution of linear volcanic ranges in Marie Byrd Land, west Antarctica. Journal of Geophysical Research: Solid Earth, 94(B6), 7223-7236.
5Babba Olou Volcanic centre, Dikhil Region, Djibouti
Barberi, F., FERRARA, G., SANTACROCE, R., & Varet, J. (1975). Structural evolution of the Afar triple junction. In: Pilger, A., & Rösler, A. (1976). Afar depression of Ethiopia. Inter-Union Commission on Geodynamics, Scientific Report 14, E. Schweizerbart'sche Verlagsbuchhandlung (Nagele u. Obermiller), Stuttgart, 38-54.
6Cacca Volcano, Arsi Zone, Oromia Region, Ethiopia
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
7Kanatim Volcano, Turkana County, Kenya
Key, R. M. (1987). Geology of the Maralal area. Republic of Kenya Ministry of Environment and Natural Resources, Mines and Geological Department Report, 105.
8Mason Spur, Victoria Land, East Antarctica, Antarctica
LeMasurier, W. E., Thomson, J. W., Baker, P. E., Kyle, P. R., Rowley, P. D., Smellie, J. L., & Verwoerd, W. J. (1990).
9Jebel Khariz Volcano, Lahij Governorate, Yemen
Dickinson, D.R.; Dodson, M.H.; Gass, I.G.; Rex, D.C. (1969) Correlation of initial 87Sr/86Sr with Rb/Sr in some late tertiary volcanic rocks of South Arabia. Earth and Planetary Science Letters, 6 (1). 84-90 doi:10.1016/0012-821x(69)90178-2
10Tokatoka, Kaipara District, Northland Region, New Zealand
Stipp, J. J., Thompson, B. N. (1971) K/Ar ages from the volcanics of Northland, New Zealand. New Zealand Journal of Geology and Geophysics, 14 (2) 403-413 doi:10.1080/00288306.1971.10421933
11Jingyuhu, Ruoqiang Co., Bayin'gholin Autonomous Prefecture, Xinjiang, China
Guo, Z., Wilson, M., Liu, J., & Mao, Q. (2006). Post-collisional, potassic and ultrapotassic magmatism of the northern Tibetan Plateau: Constraints on characteristics of the mantle source, geodynamic setting and uplift mechanisms. Journal of Petrology, 47(6), 1177-1220.
12Biga Peninsula, Balikesir Province, Turkey
Aldanmaz, E, Pearce, J.A, Thirlwall, M.F, Mitchell, J.G (2000) Petrogenetic evolution of late Cenozoic, post-collision volcanism in western Anatolia, Turkey. Journal of Volcanology and Geothermal Research, 102 (1) 67-95 doi:10.1016/s0377-0273(00)00182-7
13Oku Massif, Northwest Region, Cameroon
Fitton, J. G., & Dunlop, H. M. (1985). The Cameroon line, West Africa, and its bearing on the origin of oceanic and continental alkali basalt. Earth and Planetary Science Letters, 72(1), 23-38. doi.org/10.1016/0012-821X(85)90114-1
14Bamaoqiongzong, Shuanghu Co., Nagqu, Tibet, China
Guo, Z., Wilson, M., Liu, J., & Mao, Q. (2006). Post-collisional, potassic and ultrapotassic magmatism of the northern Tibetan Plateau: Constraints on characteristics of the mantle source, geodynamic setting and uplift mechanisms. Journal of Petrology, 47(6), 1177-1220.
15Schwarzerberg Plug, Klinghardt Group, ǃNamiǂNûs Constituency, ǁKaras Region, Namibia
Kröner 1973; Marsh 1987
16Marcoux nephelinite dike, Marcoux, Montbrison, Loire, Auvergne-Rhône-Alpes, France
Lenoir, X., Dautria, J. M., & Bodinier, J. L. (1997). Les enclaves mantelliques protogranulaires du Forez: t
17Southern Rhine Graben, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
Baranyi, I., Lippolt, H.J. & Todt, W. (1976). KALIUM-ARGON-ALTERSBESTIMMUNGEN AN TERTIAEREN VULKANITEN DES OBERRHEINGRABEN-GEBIETES: II DIE ALTERSTRAVERSE VON HEGAU NACH LOTHRINGEN. Obnerrheinische Geologische Abhandlungen, 25, 41-62.
18Hongshan complex, Congtai District, Handan, Hebei, China
Zhang, H. F., Sun, M., Zhou, X. H., & Ying, J. F. (2005). Geochemical constraints on the origin of Mesozoic alkaline intrusive complexes from the North China Craton and tectonic implications. Lithos, 81(1-4), 297-317.
19Coleraine District, Southern Grampians Shire, Victoria, Australia
McDougall, I., & Wellman, P. (1976). Potassium?argon ages for some Australian Mesozoic igneous rocks. Journal of the Geological Society of Australia, 23(1), 1-9.
20Bidjovagge gold-copper deposit, Kautokeino, Troms og Finnmark, Norway
http://aps.ngu.no/pls/oradb/minres_deposit_fakta.Main?p_objid=892&p_spraak=E

Synonyms of Fine-grained ("volcanic") normal crystalline igneous rockHide

Internet Links for Fine-grained ("volcanic") normal crystalline igneous rockHide

References for Fine-grained ("volcanic") normal crystalline igneous rockHide

Reference List:
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