<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31320574</termId><termName>concretion</termName><termType>PT</termType><termNote><![CDATA[ A mass of aggregated mineral matter found in sedimentary rocks, usually around a nucleus.  ]]></termNote><termCreatedDate>2026-03-30 20:26:24</termCreatedDate><relation><relationType>BT</relationType><termId>31306146</termId><termName>deposit</termName><termType>PT</termType></relation></term>  </Zthes>