<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31457354</termId><termName>clay shale</termName><termType>PT</termType><termNote><![CDATA[ A shale composed wholly or chiefly of material that becomes clay after weathering. ]]></termNote><termCreatedDate>2026-03-30 21:03:06</termCreatedDate><relation><relationType>UF</relationType><termId>31457355</termId><termName>shale, clay</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31438530</termId><termName>shale</termName><termType>PT</termType></relation></term>  </Zthes>