\nAflat \u00een centrul Australiei, r\u00e2ul Finke este considerat de cercet\u0103tori cel mai vechi r\u00e2u care curge continuu pe P\u0103m\u00e2nt, potrivit DailyGalaxy.<\/p>\n
\nOamenii de \u015ftiin\u0163\u0103 estimeaz\u0103 c\u0103 are \u00eentre 300 \u015fi 400 de milioane de ani, ceea ce \u00eenseamn\u0103 c\u0103 a \u00eenceput s\u0103 curg\u0103 cu mult \u00eenainte de apari\u0163ia dinozaurilor.<\/p>\n
\nCunoscut sub numele de Larapinta \u00een limba indigen\u0103 Arrernte, r\u00e2ul Finke str\u0103bate MacDonnell Ranges, un peisaj accidentat format \u00een timpul Orogenezei (proces tectonic de formare a lan\u0163urilor muntoase) Alice Springs.<\/p>\n
\nCeea ce \u00eel face remarcabil este traseul s\u0103u transversal, care taie direct forma\u0163iuni de roc\u0103 dur\u0103, \u00een loc s\u0103 le ocoleasc\u0103.<\/p>\n
\nAcest tipar neobi\u015fnuit sugereaz\u0103 c\u0103 r\u00e2ul exista \u00eenainte ca mun\u0163ii s\u0103 se ridice \u015fi \u015fi-a men\u0163inut cursul pe m\u0103sur\u0103 ce relieful s-a \u00een\u0103l\u0163at lent.<\/p>\n
\nGeomorfologul Victor Baker explic\u0103 fenomenul prin conceptul de \u201eanteceden\u0163\u0103\u201d, c\u00e2nd r\u00e2ul erodeaz\u0103 \u00een jos \u00een timp ce terenul se ridic\u0103.<\/p>\n
\nStabilitatea geologic\u0103 a Australiei a jucat un rol esen\u0163ial \u00een conservarea traseului antic al r\u00e2ului.<\/p>\n
\nSpre deosebire de continentele marcate de cutremure frecvente sau de glacia\u0163iuni, Placa Australian\u0103 a r\u0103mas relativ neschimbat\u0103 timp de sute de milioane de ani.<\/p>\n
\nGeologul Ellen Wohl subliniaz\u0103 c\u0103 multe r\u00e2uri str\u0103vechi au disp\u0103rut din cauza activit\u0103\u0163ii vulcanice, glacia\u0163iunilor sau schimb\u0103rilor topografice majore.<\/p>\n
\nAbsen\u0163a unor astfel de evenimente a permis r\u00e2ului Finke s\u0103 evite \u00eengroparea, devierea sau eroziunea masiv\u0103.<\/p>\n
\nPentru a sus\u0163ine v\u00e2rsta estimat\u0103 a r\u00e2ului, cercet\u0103torii au folosit datarea cu izotopi radioactivi \u015fi analize de eroziune.<\/p>\n
\nDe-a lungul unor perioade uria\u015fe de timp, apa las\u0103 semn\u0103turi chimice \u00een rocile expuse, \u00eenregistr\u00e2nd interac\u0163iunea lor cu aerul \u015fi eroziunea.<\/p>\n
\nStudii citate de Live Science indic\u0103 faptul c\u0103 terenul din jur s-a format \u00een aceea\u015fi perioad\u0103 tectonic\u0103, acum 300-400 de milioane de ani.<\/p>\n
\nAceast\u0103 concordan\u0163\u0103 \u00eent\u0103re\u015fte ipoteza c\u0103 r\u00e2ul Finke este cel mai vechi sistem fluvial supravie\u0163uitor care \u00ee\u015fi urmeaz\u0103 \u00eenc\u0103 traseul original.<\/p>\n","protected":false},"excerpt":{"rendered":"
Un r\u00e2u ar putea fi cel mai vechi de pe P\u0103m\u00e2nt \u015fi curge ne\u00eentrerupt de sute de milioane de ani, \u00een ciuda marilor schimb\u0103ri geologice ale planetei.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[510],"tags":[41402,23004],"class_list":["post-244067","post","type-post","status-publish","format-standard","hentry","category-actualitate","tag-dinozaur","tag-rau"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/244067","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=244067"}],"version-history":[{"count":0,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/244067\/revisions"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=244067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=244067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=244067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}