<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
	mads.xsd"><authority><topic authority="https://confrides.cpd.ua.es/tematres/vocab/">Área 12. Petrografía y Petrología</topic></authority><related type="narrower"><topic>Arcilla</topic></related><related type="narrower"><topic>Arcilla - Análisis</topic></related><related type="narrower"><topic>Arcilla refractaria</topic></related><related type="narrower"><topic>Arenisca</topic></related><related type="narrower"><topic>Caliza</topic></related><related type="narrower"><topic>Carbón</topic></related><related type="narrower"><topic>Carbón - Análisis</topic></related><related type="narrower"><topic>Diagénesis</topic></related><related type="narrower"><topic>Gemas</topic></related><related type="narrower"><topic>Intrusiones (Geología)</topic></related><related type="narrower"><topic>Metamorfismo (Geología)</topic></related><related type="narrower"><topic>Meteoritos</topic></related><related type="narrower"><topic>Paragénesis</topic></related><related type="narrower"><topic>Petrogénesis</topic></related><related type="narrower"><topic>Petrografía</topic></related><related type="narrower"><topic>Petrología estructural</topic></related><related type="narrower"><topic>Piedras preciosas</topic></related><related type="narrower"><topic>Rocas</topic></related><related type="narrower"><topic>Rocas - Análisis</topic></related><related type="narrower"><topic>Rocas carbonatadas</topic></related><related type="narrower"><topic>Rocas cristalinas</topic></related><related type="narrower"><topic>Rocas ígneas</topic></related><related type="narrower"><topic>Rocas metamórficas</topic></related><related type="narrower"><topic>Rocas sedimentarias</topic></related><related type="narrower"><topic>Rocas silíceas</topic></related><related type="narrower"><topic>Rocas, Mecánica de las</topic></related><related type="broader"><topic>GEOLOGÍA (Índice)</topic></related><variant type="other"><topic>Arcillas</topic></variant><variant type="other"><topic>Materiales arcillosos</topic></variant></mads>