Meaning of lutigás by Francisco Valdez Mendoza

Sust. MASC. Gas; 40 or ) Shales: sedimentary rocks generated by consolidation of mud - mud of the granulometry of clay, which is the main component - and anaerobic decomposition of organic matter contained in the mud. For low porosity of these rocks, to extract them gas must undergo hydraulic fracturing and providing them with chemical additives. It is striking that, in its vast majority, erroneously, in German, Spanish, French, Italian, Portuguese and other languages is le denominated gas shale or lesser extent, shale gas. Or, to avoid committing misdeeds, and even comfort, opt to not translate its original English expression "shale gas". Need to specify equivalences of concepts: 1 ) Shale: 'shale'; schist: «schist»; Slate: 'slate'. Unlike the Shales, schists and blackboards are metamorphic rocks. Lutite etymology: from the Latin «lútum»: mud; gas: the Greek «cháos»: chaos, confusion, lack of form and independent volume and its tendency to maximum occupancy of space.