<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31344776</termId><termName>metamorphic rock</termName><termType>PT</termType><termNote><![CDATA[ Rocks that result from the alteration of pre-existing rocks in response to changing environmental conditions, such as variations in temperature, pressure, and mechanical stress, and the addition or subtraction of chemical components. The pre-existing rocks may be igneous, sedimentary, or other metamorphic rocks. ]]></termNote><termCreatedDate>2026-03-30 20:32:59</termCreatedDate><relation><relationType>UF</relationType><termId>31344781</termId><termName>stone, metamorphic</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344777</termId><termName>metamorphic rocks</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344778</termId><termName>metamorphic stone</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344779</termId><termName>rock, metamorphic</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31344780</termId><termName>rocks, metamorphic</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31320474</termId><termName>rock</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31344727</termId><termName>jade</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375456</termId><termName>lapis lazuli</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375457</termId><termName>gneiss</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375459</termId><termName>hornfels</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375460</termId><termName>marble</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375463</termId><termName>phyllite</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375464</termId><termName>quartzite</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375465</termId><termName>schist</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375467</termId><termName>slate</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375369</termId><termName>soapstone</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375470</termId><termName>serpentinite</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31375474</termId><termName>eclogite</termName><termType>PT</termType></relation></term>  </Zthes>