INTRUSIVE ROCKS
\ɪntɹˈuːsɪv ɹˈɒks], \ɪntɹˈuːsɪv ɹˈɒks], \ɪ_n_t_ɹ_ˈuː_s_ɪ_v ɹ_ˈɒ_k_s]\
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[L.] (Geol.) Igneous rocks which have thrust themselves in sheet-like masses, vertical, oblique, or flat, through or between sedimentary strata, affecting them on both sides, or above and beneath; some igneous rocks are contemporary and interstratified with sedimentary strata, altering only the strata beneath them.
By Henry Percy Smith
Word of the day
basidiomycota
- comprises fungi bearing the spores on basidium: Gasteromycetes (puffballs); Tiliomycetes (comprising orders Ustilaginales (smuts) and Uredinales (rusts)); Hymenomycetes (mushrooms; toadstools; agarics; bracket fungi); in some classification systems considered a division of kingdom comprises fungi bearing spores on a basidium; includes Gasteromycetes (puffballs) Tiliomycetes comprising the orders Ustilaginales (smuts) and Uredinales (rusts) Hymenomycetes (mushrooms, toadstools, agarics bracket fungi).