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 (tō′lə-īt′, thō′-)
Any of a series of igneous rocks similar in composition to basalt but having more silica and iron and less aluminum.

[After Tholei (Tholey), municipality in Saarland, Germany, where it is found.]

tho′lei·it·ic (-ĭt′ĭk) adj.


relating to, characteristic of or resembling tholeiite
References in periodicals archive ?
Luff, The Chalt Volcanics, Kohistan, Pakistan N: High-Mg Tholeiitic and Low-Mg Calc-Alkaline Volcanism in a Cretaceous Iceland Arc.
Different geochemical studies on the rocks of the Arquia Complex reveal an oceanic origin from tholeiitic basalts in MORB or N-MORB environments types (Villagomez et al.
2011) grouped this products in the Basal Tholeiitic Supersynthem and the literature data are agree to date the eruptive phenomena at about 500000 years ago.
Mineral-melt interaction during late stage crystallization has been identified in rocks of variable geochemical affinity, including tholeiitic (Gillis, 1996; Tribuzio et al.
Furthermore, Listice basalt belongs to tholeiitic suite and could have originated by a low degree of partial melting of a garnet peridotite source (Fig.
The Quaternary Moctezuma volcanic field: a tholeiitic to alkali basaltic episode in the central Sonoran Basin and Range Province, Mexico.
1996; Kingsley et al, 2002; Simons et al, 2002) show mixtures of tholeiitic and alkaline basalts at various sites, so the hotpost should be beneath Salas y Gomez Island, in contrast to Haase et al.
11,12) Indeed, crust-derived silicic magmas play a key role in magmatism in the NE Japan arc: they erupt directly as tholeiitic magmas or act as an end-member component in the mixing that generates calc-alkaline magmas.
Late Triassic to Early Jurassic tholeiitic dykes and basin flood basalts in the region are located in Figure 2.
This gold project covers a folded (tilted syncline towards the south; north dipping) volcanic sequence composed of calc-alkaline sinter to lapillis-blocks felsic-intermediate tuffs (WABAMISK Formation), banded iron-formation (BIF)/ chert, intermediate and tholeiitic mafics.