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
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.