<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>3642</termId><termName>Petrología estructural</termName><termType>TT</termType><termLanguage>es-ES</termLanguage><termVocabulary>MATERIAS BUA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>Petrología estructural</termSortkey><termCreatedDate>Petrología estructural</termCreatedDate><relation><relationType>RT</relationType><termId>3639</termId><termName>Metamorfismo (Geología)</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3643</termId><termName>Metasomatismo (Mineralogía)</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>3754</termId><termName>Petrogénesis</termName><termType>PT</termType></relation></term>  </Zthes>