<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">mudstone</topic></authority><related type="narrower"><topic>siltstone</topic></related><related type="broader"><topic>argillaceous rock</topic></related><variant type="other"><topic>mud rock</topic></variant><variant type="other"><topic>rock, mud</topic></variant> <note xml:lang="en"><![CDATA[ A clayey mud that has been hardened by pressure of cementation or heat with the composition and texture of shale but is much less fissile. ]]></note></mads>