<?xml version="1.0" encoding="UTF-8"?>
<metadata>
	<idinfo>
		<citation>
			<citeinfo>
				<origin>Michelle Barton</origin>
				<pubdate>20180508</pubdate>
				<title>Geologic Map of the Elysium Paleolake Basin, Mars</title>
				<geoform>vector digital data</geoform>
				<serinfo>
					<sername>Geologic Map of the Elysium Paleolake Basin, Mars</sername>
					<issue>I2397</issue>
				</serinfo>
			</citeinfo>
		</citation>
		<descript>
			<abstract>These geologic and topographic maps show a basin in the Elysium region of Mars that is thought to have been the site of a large paleolake during the most recent period (Amazonian) in Mars' history (Scott and Chapman, 1991b). The basin, referred to as the Elysium basin, extends for more than 2,000 km across the lowland plains. It is important, not only geologically, but because the amount, location, and duration of liquid water that it may have contained would have been critical factors governing the possible origin and survival of life on Mars.</abstract>
			<purpose>Digitized 1:5,000,000-scale geologic map of the Elysium Paleolake Basin, Mars. Originally mapped on Viking imagery. The scanned map sheet was imported into ArcMap and georeferenced to the more current 2014 global THEMIS Daytime IR mosaic basemap. Contacts and geologic units were digitized and attributed based on type and unit name.</purpose>
		</descript>
		<timeperd>
			<timeinfo>
				<rngdates>
					<begdate>20020218</begdate>
				</rngdates>
			</timeinfo>
			<current>Images for basemap mosaic were obtained during the Viking Orbiter mission</current>
		</timeperd>
		<status>
			<progress>Complete</progress>
			<update>None planned</update>
		</status>
		<spdom>
			<bounding>
				<westbc>-135</westbc>
				<eastbc>170</eastbc>
				<northbc>25</northbc>
				<southbc>-15</southbc>
			</bounding>
		</spdom>
		<keywords>
			<theme>
				<themekt>None</themekt>
				<themekey>Geologic Mapping</themekey>
				<themekey>Mars</themekey>
				<themekey>Elysium</themekey>
				<themekey>Paleolake basin</themekey>
			</theme>
		</keywords>
		<accconst>None</accconst>
		<useconst>None</useconst>
		<datacred>David H. Scott, Mary G. Chapman</datacred>
		<native> Version 6.2 (Build 9200) ; Esri ArcGIS 10.4.1.5686</native>
	</idinfo>
	<spdoinfo>
		<direct>Vector</direct>
		<ptvctinf>
			<sdtsterm>
				<sdtstype>String</sdtstype>
				<ptvctcnt>4229</ptvctcnt>
			</sdtsterm>
			<sdtsterm>
				<sdtstype>GT-polygon composed of chains</sdtstype>
				<ptvctcnt>1937</ptvctcnt>
			</sdtsterm>
		</ptvctinf>
	</spdoinfo>
	<spref>
		<horizsys>
			<planar>
				<mapproj>
					<mapprojn>Mars2000 Merc clon0</mapprojn>
					<mercator>
						<stdparll>0.0</stdparll>
						<longcm>-170.0</longcm>
						<feast>0.0</feast>
						<fnorth>0.0</fnorth>
					</mercator>
				</mapproj>
				<planci>
					<plance>coordinate pair</plance>
					<coordrep>
						<absres>0.0001</absres>
						<ordres>0.0001</ordres>
					</coordrep>
					<plandu>meter</plandu>
				</planci>
			</planar>
			<geodetic>
				<horizdn>D Mars 2000 Sphere</horizdn>
				<ellips>Mars 2000 Sphere IAU IAG</ellips>
				<semiaxis>3396190.0</semiaxis>
				<denflat>0.0</denflat>
			</geodetic>
		</horizsys>
	</spref>
	<metainfo>
		<metd>20180510</metd>
		<metc>
			<cntinfo>
				<cntperp>
					<cntper>Michelle Barton</cntper>
				</cntperp>
				<cntaddr>
					<addrtype>physical</addrtype>
					<address>2255 N Gemini Rd</address>
					<city>Flagstaff</city>
					<state>AZ</state>
					<postal>86001</postal>
					<country>US</country>
				</cntaddr>
				<cntvoice>9285567177</cntvoice>
			</cntinfo>
		</metc>
		<metstdn>FGDC Content Standard for Digital Geospatial Metadata</metstdn>
		<metstdv>FGDC-STD-001-1998</metstdv>
		<mettc>local time</mettc>
	</metainfo>
	<Esri><CreaDate>20180510</CreaDate><CreaTime>12011300</CreaTime><ArcGISstyle>FGDC CSDGM Metadata</ArcGISstyle><SyncOnce>TRUE</SyncOnce><DataProperties><itemProps><itemLocation><linkage Sync="TRUE">file://\\gs\flagstaffaz-g astro\archive\projects\GeologicMapping\GEOARCHIVE\I2397\GIS\I2397_Metadata (1)</linkage><protocol Sync="TRUE">Local Area Network</protocol></itemLocation></itemProps><copyHistory><copy source="S:\mbarton\ForMarc\I2397_Elysium_Paleolake_Basin_5M\Documentation\Metadata\I2397_Metadata" dest="\\gs\flagstaffaz-g astro\archive\projects\GeologicMapping\GEOARCHIVE\I2397\GIS\I2397_Metadata (1)" date="20180510" time="12011300"></copy></copyHistory></DataProperties></Esri></metadata>
