<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31412267</termId><termName>sandstone</termName><termType>PT</termType><termNote><![CDATA[ A consolidated sedimentary rock, consisting of sand grains united with a natural cementing material; the most common sand in sandstone contains quartz, with considerable feldspar, lime, mica, and clayey matter. ]]></termNote><termCreatedDate>2026-03-30 20:50:51</termCreatedDate><relation><relationType>UF</relationType><termId>31412268</termId><termName>arenaceous rock</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31412269</termId><termName>psammites</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31412270</termId><termName>rock, arenaceous</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31375454</termId><termName>sedimentary rock by composition</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31438534</termId><termName>[sandstone by composition or appearance]</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31438535</termId><termName>[sandstone by location]</termName><termType>PT</termType></relation></term>  </Zthes>