Quick Links : The Mindat Manual The Rock H. Currier Digital Library Mindat Newsletter [Free Download]

Home Page About Mindat The Mindat Manual History of Mindat Copyright Status Who We Are Contact Us Advertise on Mindat

Donate to Mindat Corporate Sponsorship Sponsor a Page Sponsored Pages Mindat Advertisers Advertise on Mindat

Learning Center What is a mineral?The most common minerals on earth Information for Educators Mindat Articles The Elements The Rock H. Currier Digital Library Geologic Time Explore Fossils

Minerals by Properties Minerals by Chemistry Mineral Visual Explorer Advanced Locality Search Random Mineral Random Locality Search by minID Localities Near Me Search Articles Search Glossary More Search Options

The Mindat Manual Add a New Photo Rate Photos Locality Edit Report Coordinate Completion Report Add Glossary Item

Mining Companies Statistics Users Mineral Museums Clubs & Organizations Mineral Shows & Events The Mindat Directory Device Settings The Mineral Quiz Time Machine

Photo Search Photo Galleries Search by Color Photo Colour Explorer New Photos Today New Photos Yesterday Members' Photo Galleries Past Photo of the Day Gallery Photography

Basaltoid

A rock classification type

This page is currently not sponsored. Click here to sponsor this page.

Photos of Basaltoid (119)Recorded Ages and Analyses Discuss Basaltoid

Basaltoid Gallery Search Photos of Basaltoid

Edit Basaltoid Add Synonym Add Sub-type (rock)Edit CIF structures Clear Cache

Basalt

El Hierro, Santa Cruz de Tenerife Province, Canary Islands, Spain

Amygdaloidal basalt

Port road outcrop, Morro de Jable, Pájara, Fuerteventura, Las Palmas Province, Canary Islands, Spain

Amygdaloidal basalt, etc.

Ojibway Mine, Ojibway, Allouez Township, Keweenaw County, Michigan, USA

Basalt

El Hierro, Santa Cruz de Tenerife Province, Canary Islands, Spain

Amygdaloidal basalt

Port road outcrop, Morro de Jable, Pájara, Fuerteventura, Las Palmas Province, Canary Islands, Spain

Amygdaloidal basalt, etc.

Ojibway Mine, Ojibway, Allouez Township, Keweenaw County, Michigan, USA

Basalt

El Hierro, Santa Cruz de Tenerife Province, Canary Islands, Spain

Amygdaloidal basalt

Port road outcrop, Morro de Jable, Pájara, Fuerteventura, Las Palmas Province, Canary Islands, Spain

Hide all sections | Show all sections

About BasaltoidHide

Fine grained basic igneous (usually volcanic) rocks tentatively identified as basalt. It may contain some minor quartz or foids and the term includes some picrites, basanites, tephrites, basaltic andesite and related rocks.

Unique IdentifiersHide

Mindat ID:

50663

Long-form identifier:

mindat:1:1:50663:4

Similar NamesHide

Basaltite

A rock subtype

Classification of BasaltoidHide

Rock
- Igneous rock
  - Normal crystalline igneous rock
    - Fine-grained ("volcanic") normal crystalline igneous rock
      - Basic volcanic rock
        Basaltoid

Basaltic rock appears in fields 9,9*,9’,10,10*,10’ in the QAPF diagram.

Basaltic rock is found in fields Pc, B, O1, U1, U2, S2 and S1 in the TAS diagram.

Sub-divisions of BasaltoidHide

Age distributionHide

Recorded ages:

Phanerozoic : 358.9 ± 0.4 Ma to 0 Ma - based on 95 recorded ages.

Sample ages:

Sample ID	Recorded age	Geologic Time	Dating method
1	At least Ma	Anthropocene
2	0.280 ± 0.020 to 0.212 ± 0.038 Ma	Pleistocene	Ar/Ar
3	1.39 ± 0.2 to 0.23 ± 0.26 Ma	Pleistocene	K-Ar
4	2.3 to 0.7 Ma	Pleistocene
5	2.58 ± 0.03 to 1.38 ± 0.02 Ma	Pleistocene	K-Ar whole rock
6	2.7 ± 0.9 to 1.8 Ma	Cenozoic	K-Ar
7	4.00 ± 0.06 Ma	Pliocene	K-Ar
8	4.8 ± 2.0 Ma	Pliocene
9	5.90 to 0.66 Ma	Cenozoic	Ar-Ar
10	7.80 ± 0.20 to 3.10 ± 0.10 Ma	Neogene	K-Ar
11	9.08 ± 0.29 Ma	Miocene	Ar-Ar
12	11.76 ± 0.02 to 11.14 ± 0.12 Ma	Miocene	K-Ar
13	15 to 11 Ma	Miocene	K-Ar
14	23 to 20 Ma	Miocene	Ar-Ar, K-Ar, fission track
15	24.9 Ma	Oligocene	K-Ar
16	30 to 27 Ma	Oligocene	K-Ar
17	52 to 3.5 Ma	Cenozoic	K-Ar
18	64.7 ± 1.1 to 42.4 ± 2.3 Ma	Paleogene
19	100.5 to 66.0 Ma	Late/Upper Cretaceous
20	358.9 ± 0.4 to 298.9 ± 0.15 Ma	Paleozoic

Sample references:

ID	Locality	Reference	Notes
1	Longgang, Jingyu County, Baishan, Jilin, China	Wu, F. Y., Walker, R. J., Ren, X. W., Sun, D. Y., & Zhou, X. H. (2003). Osmium isotopic constraints on the age of lithospheric mantle beneath northeastern China. Chemical Geology, 196(1-4), 107-129.
2	Hilina Bench, Kilauea Volcano, Hawaii County, Hawaii, USA	Calvert, A. T., & Lanphere, M. A. (2006). Argon geochronology of Kilauea's early submarine history. Journal of Volcanology and Geothermal Research, 151(1-3), 1-18. doi.org/10.1016/j.jvolgeores.2005.07.023
3	Bouvet Island, Norway	Prestvik, Tore, Winsnes, T. S. (1981) Geology of Bouvetøya, South Atlantic. Norsk polarinstitutt - Skrifter 175 p.41-68.
4	Ba Kev, Ratanakiri Province, Cambodia	Lacombe, P. (1969). Le massif basaltique quaternaire
5	Upolu Island, Samoa	McDOUGALL, I. A. N. (2010). Age of volcanism and its migration in the Samoa Islands. Geological Magazine, 147(5), 705-717. doi.org/10.1017/S0016756810000038
6	Ulleungdo, Ulleung County, North Gyeongsang Province, South Korea	Kim, Y. K. (1985). Petrology of Ulreung Island, Korea	Basaltic lava from first stage of volcanism
7	Ua Pou Island, Marquesas Islands, French Polynesia, France	Legendre, C., Maury, R. C., Caroff, M., Guillou, H., Cotten, J., Chauvel, C., ... & Rossi, P. (2005). Origin of exceptionally abundant phonolites on Ua Pou Island (Marquesas, French Polynesia): Partial melting of basanites followed by crustal contamination. Journal of Petrology, 46(9), 1925-1962. doi.org/10.1093/petrology/egi043
8	Franklin Island, Victoria Land, East Antarctica, Antarctica	Armstrong, R. L. (1978). K-Ar dating: Late Cenozoic McMurdo volcanic group and dry valley glacial history, Victoria Land, Antarctica. New Zealand journal of geology and geophysics, 21(6), 685-698.
9	James Ross Island, Antarctica	Smellie, J. L., Johnson, J. S., McIntosh, W. C., Esser, R., Gudmundsson, M. T., Hambrey, M. J., & De Vries, B. V. W. (2008). Six million years of glacial history recorded in volcanic lithofacies of the James Ross Island Volcanic Group, Antarctic Peninsula. Palaeogeography, Palaeoclimatology, Palaeoecology, 260(1-2), 122-148.
10	Cézallier Massif, Auvergne-Rhône-Alpes, France	CANTAGREL, J., & THONAT, A. (1976). AGE FOR VOLCANISM IN CEZALLIER AREA (FRENCH MASSIF CENTRAL) AND VOLCANIC ACTIVITY MIGRATION IN AUVERGNE. COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES SERIE D, 282(21), 1837-1840.
11	Lop Buri Lava Field, Lopburi Province, Thailand	Intasopa, S., Dunn, T., & Lambert, R. S. (1995). Geochemistry of Cenozoic basaltic and silicic magmas in the central portion of the Loei
12	Mururoa, Tuamotu Archipelago, Tuamotu-Gambier, French Polynesia, France	Guillou, H. E. R. V. É., Guille, G. É. R. A. R. D., Brousse, R. O. B. E. R. T., & Bardintzeff, J. M. (1990). Evolution de basaltes tholeiitiques vers des basaltes alcalins dans le substratum volcanique de Fangataufa (Polynesie francaise). Bulletin de la Société Géologique de France, 6(3), 537-549. doi.org/10.2113/gssgfbull.VI.3.537
13	Hessian Depression, Kassel Region, Hesse, Germany	Wedepohl, K. H. (1982). K
14	Shiting-Yinko Area, Xindian District, New Taipei City, Taiwan	Chen, C. H., Chung, S. H., Hwang, H. H., Chen, C. H., & Chung, S. L. (2001). Petrology and geochemistry of Neogene continental basalts and related rocks in northern Taiwan (III): Alkali basalts and tholeiites from Shiting-Yinko area. Western Pacific Earth Sciences, 1(1), 19-46.
15	Jabal Al Hasawinah, Wadi al Shatii District, Libya	BUSREWIL, M. T., & OUN, K. M. (1991). Geochemistry of the Tertiary alkaline rocks of Jabal al Hasawinah, west central Libya. In Symposium on the geology of Libya (pp. 2587-2598).
16	Grande Terre island, Kerguelen Islands, French Southern and Antarctic Lands, France	Gautier, Isabelle, Weis, Dominique, Mennessier, Jean-Paul, Vidal, Philippe, Giret, André, Loubet, Michel (1990) Petrology and geochemistry of the Kerguelen Archipelago basalts (South Indian Ocean): evolution of the mantle sources from ridge to intraplate position. Earth and Planetary Science Letters, 100 (1) 59-76 doi:10.1016/0012-821x(90)90176-x
17	Gharyan Volcanic Field, Jabal al Gharbi District, Libya	Piccoli, G. (1970). Outlines of volcanism in northern Tripolitania (Libya). Bollettino della Societa Geologica Italiana, 89, 449-461.	for flood basalts
18	Emperor Seamounts, Pacific Ocean	Clague, D. A., & Dalrymple, G. B. (1989). Tectonics, geochronology, and origin of the Hawaiian-Emperor volcanic chain. The Geology of North America, 188-217.
19	Yunshan, Yongtai County, Fuzhou, Fujian, China	Hong, W., Xu, X., & Zou, H. (2013). Petrogenesis of coexisting high-silica aluminous and peralkaline rhyolites from Yunshan (Yongtai), southeastern China. Journal of Asian Earth Sciences, 74, 316-329.
20		Xia, L. Q., Xu, X. Y., Xia, Z. C., Li, X. M., Ma, Z. P., & Wang, L. S. (2004). Petrogenesis of Carboniferous rift-related volcanic rocks in the Tianshan, northwestern China. Geological Society of America Bulletin, 116(3-4), 419-433.

Synonyms of BasaltoidHide

Basaltic rock

Internet Links for BasaltoidHide

mindat.org URL:

https://www.mindat.org/min-50663.html
Please feel free to link to this page.

Search Engines:

Look for Basaltoid on Google

Look for Basaltoid images on Google

Look for Basaltoid on Bing

Look for Basaltoid images on Bing

Look for Basaltoid on DuckDuckGo

Look for Basaltoid images on DuckDuckGo

Look for Basaltoid in the Rock H. Currier Digital Library

References for BasaltoidHide

Reference List:

Quick NavTop About Basaltoid Unique Identifiers Similar Names Classification Sub-divisions Age distribution Synonyms Internet Links References

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 1, 2026 16:18:24 Page updated: March 15, 2026 12:55:14

Go to top of page