syntexis Petrol.
(sɪnˈtɛksɪs)
[a. Gr. σύντηξις, f. συντήκειν to fuse together, f. τήκειν to melt: see syn-1.]
The alteration of magma by the melting or assimilation of another rock.
| 1911 F. Loewinson-Lessing in Geol. Mag. VIII. 295 When the re-melted portion of the crust is composed of different rocks, eruptive, or sedimentary,..the process is rather a ‘syntexis’, as I have called it, an assimilation which is followed by liquation and differentiation. 1932 F. F. Grout Petrogr. & Petrol. iii. 230 Syntexis has been appealed to in explaining how the more siliceous and the more alkalic rock clans can be derived from primary basaltic magma. 1966 McGraw-Hill Encycl. Sci. & Technol. X. 84/1 In some instances such endomorphic effects are sufficiently intensive to result in modification of the composition of the magma (syntexis). |