<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31438536</termId><termName>radiolarite</termName><termType>PT</termType><termNote><![CDATA[ Hard, fine-grained siliceous sedimentary rock composed of the remains of radiolarians, single-celled organisms that sink to the seafloor and form this rock, or radiolarian earth. ]]></termNote><termCreatedDate>2026-03-30 20:58:12</termCreatedDate><relation><relationType>BT</relationType><termId>31412287</termId><termName>siliceous rock</termName><termType>PT</termType></relation></term>  </Zthes>