<?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">boulder</topic></authority><related type="broader"><topic>rock by form</topic></related><variant type="other"><topic>boulders</topic></variant> <note xml:lang="en"><![CDATA[ The largest rock fragment recognized by sedimentologists, a boulder is a detached rock mass larger than a cobble, having a diameter greater than 256 mm (10 in.). ]]></note></mads>