}}</ref> Crater counts date Syrtis Major to the [[Geology of Mars#Crater density timeline|early Hesperian epoch]]; it postdates formation of the adjacent Isidis [[impact basin]].<ref name="Hiesinger2004"/>
==Descubrimento e nomeenome==
TheO namenome de Syrtis Major isprocede deriveddo fromnome the'Syrtis classicalmaior'' que os [[AncientRoma Romeantiga|Romanromano]]s nameusaban ''Syrtispara maior'' for theo [[GulfGolfo ofde Sidrasidra]], onna thecosta coastde ofLibia [[Libya]](a (classicalantiga provincia romana de [[Cyrenaica]]).
Syrtis Major wasfoi theo firstprimeiro documentedaccidente surfacexeolóxico featuredocumentado ofdoutro anotherplaneta do [[planetSistema Solar]]. ItFoi wasdescuberto discovered bypor [[Christiaan Huygens]], whoquen includedincluíu itesta inrexión anun drawingdebuxo ofde MarsMarte inque fixo no ano 1659. Syrtis TheMajor featurerecibiu wasorixinalmente originallyo knownnome as thede '''HourglassMara Seado reloxo de area''', butpero hasrecibiría beenmoitos givenoutros differentde names by differentdistintos [[cartographercartografo]]s. InEn 1840, [[Johann Heinrich von Mädler]] compiledconfeccionou un mapa de Marte a mappartir ofdas Marssúas fromobservacións hise observationsdoulle anda called''Syrtis'' theo featurenome de '''Atlantic Canale'''. InNo mapa de [[Richard Proctor]]'s do ano 1867, map''syrtis'' itrecibiría iso callednome thende '''Kaiser Sea''' (afteren honra ó [[Frederik Kaiser]] of thedo [[LeidenObservatorio Observatoryde Leiden]]). [[Camille Flammarion]] called it thechamouno '''Mer du Sablier''' (Frenchen for[[lingua francesa|farncés]] "HourglassMar Seado reloxo de area") whencando heno revisedano Proctor's1876 nomenclaturerevisou ina 1876nomenclatura de Proctor. TheO namenome de "Syrtis Major" wasfoi chosenescollido bypor [[Giovanni Schiaparelli]] whencando hecreou createdun amapa mapde basedMarte onfeito observationsna mademáxima duringaproximación Mars'do closeplaneta approachvermello toá Earth[[Terra]] do inano 1877.<ref>{{citecita booklibro| titletítulo=Mapping Mars: Science, Imagination, and the Birth of a World| firstautor = Oliver|last=Morton| publishereditor=Picador USA| locationlocalización=New York| yearano=2002| isbn=0312245513| pagespáxinas=14–15}}</ref><ref>{{citecita web|url=http://www.uapress.arizona.edu/onlinebks/mars/chap04.htm|titletítulo=The Planet Mars: A History of Observation and Discovery - Chapter 4: Areographers|author=William Sheehan|accessdate dataacceso=200707-09-072007}}</ref>
