单词 | θ5674 |
释义 | the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [adjective] (110) fire-born?a1656 igneous1661 Resulting from, or produced by, the action of fire; esp. in Geology. Produced by volcanic agency (opposed to aqueous, adj. 3). Plutonic1794 Geology. Of, relating to, or designating rocks formed by the action of heat at great depths in the earth's crust, esp. as distinguished from… pyrogenous1821 = pyrogenic, adj. 1a. Plutonian1823 Geology. = Plutonic, adj. 2. Now historical. pyrogenic1823 Produced by or resulting from the action of fire or heat; (Geology) produced from or by the action of magma; (of rocks) igneous. Subcategories:— structure (1) — mineral composition (7) — plutonic (17) — hypabyssal (3) — volcanic (37) — trap (20) — porphyry (8) — wacke (1) — felsite (2) — elvan (1) — ancient porphyry (3) — other igneous (4) |
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