{"id":675656,"date":"2026-02-08T06:26:03","date_gmt":"2026-02-08T06:26:03","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=675656"},"modified":"2026-02-08T06:26:03","modified_gmt":"2026-02-08T06:26:03","slug":"raul-care-curge-in-sus-geologii-au-descoperit-fenomenul-din-spatele-misterului","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=675656","title":{"rendered":"R\u00e2ul care \u201ecurge \u00een sus\u201d. Geologii au descoperit fenomenul din spatele misterului"},"content":{"rendered":"
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R\u00e2urile \u00ee\u0219i croiesc drumul curg\u00e2nd \u00een jos de-a lungul anilor. De obicei, urmeaz\u0103 pantele \u0219i brazdele oric\u0103rui lan\u021b muntos pe care \u00eel \u00eent\u00e2lnesc.<\/p>\n

\u0218i totu\u0219i, r\u00e2ul Green traverseaz\u0103 mun\u021bii pentru a se \u00eent\u00e2lni cu r\u00e2ul Colorado. A s\u0103pat canionul Lodor, ad\u00e2nc de 700 de metri, care se \u00eentinde perpendicular pe lan\u021bul muntos, scrie Science Alert<\/a>.<\/p>\n

R\u00e2ul urmeaz\u0103 acest curs de doar 8 milioane de ani. Mun\u021bii au 50 de milioane de ani. Cum este posibil?<\/p>\n

Fenomenul picur\u0103rii litosferice<\/h2>\n

Geologul Adam Smith de la Universitatea din Glasgow a condus o echip\u0103 pentru a cerceta acest mister. Descoperirea este uluitoare: r\u00e2ul Green nu a trebuit s\u0103 curg\u0103 deloc \u00een sus.<\/p>\n

\u00cen schimb, lan\u021bul muntos a fost cobor\u00e2t \u00eentr-un fenomen cunoscut sub numele de picurare litosferic\u0103.<\/p>\n

O combina\u021bie de imagini seismice \u0219i modelare sofisticat\u0103 a datelor a ajutat echipa s\u0103 ajung\u0103 la aceast\u0103 concluzie.<\/p>\n

\u201eAlte r\u00e2uri din Mun\u021bii Uinta ofer\u0103 dovezi c\u0103 \u00een\u0103l\u021bimea mun\u021bilor s-a schimbat \u00een ultimele c\u00e2teva milioane de ani\u201d, scriu Smith \u0219i echipa sa.<\/p>\n

R\u0103d\u0103cina muntelui a \u201epicurat\u201d \u00een manta P\u0103m\u00e2ntului<\/h2>\n

Datele sugereaz\u0103 c\u0103 r\u0103d\u0103cina Mun\u021bilor Uinta a devenit at\u00e2t de grea \u00eenc\u00e2t a \u201epicurat\u201d \u00een manta lichid\u0103 a P\u0103m\u00e2ntului. Este vorba despre o bucat\u0103 dens\u0103 de minerale la baza litosferei.<\/p>\n

Acest lucru ar fi tras temporar lan\u021bul muntos \u00een jos. Astfel r\u00e2ul Green \u0219i-a putut croi cursul improbabil.<\/p>\n

Ulterior, Mun\u021bii Uinta au crescut cu 400 de metri \u00een jurul r\u00e2ului. S-a format canionul pe care \u00eel avem ast\u0103zi.<\/p>\n

Imagistica seismic\u0103 cite\u0219te dispersia vibra\u021biilor seismice pe m\u0103sur\u0103 ce traverseaz\u0103 P\u0103m\u00e2ntul. \u00cen Mun\u021bii Uinta, imaginile au revelat o bucat\u0103 rece, rotund\u0103, la aproximativ 200 de kilometri sub suprafa\u021b\u0103.<\/p>\n

Aceasta este probabil pic\u0103tura \u00een cauz\u0103.<\/p>\n

Scoar\u021ba sub\u021bire confirm\u0103 teoria<\/h2>\n

Scoar\u021ba de sub ace\u0219ti mun\u021bi este mult mai sub\u021bire dec\u00e2t te-ai a\u0219tepta \u00een mod normal. Acest lucru este o dovad\u0103 \u00een plus c\u0103 pic\u0103tura a smuls straturile inferioare.<\/p>\n

Odat\u0103 ce pic\u0103tura s-a desprins de litosfer\u0103 \u00een urm\u0103 cu aproximativ 2-5 milioane de ani, lan\u021bul muntos a putut s\u0103 se ridice. P\u00e2n\u0103 atunci, r\u00e2ul Green se stabilise definitiv.<\/p>\n

Canionul Lodor r\u0103m\u0103sese acolo. R\u00e2ul Green devenise un afluent al r\u00e2ului Colorado.<\/p>\n

Impactul asupra diviziunii continentale<\/h2>\n

\u201eFuziunea r\u00e2urilor Green \u0219i Colorado cu milioane de ani \u00een urm\u0103 a modificat diviziunea continental\u0103 a Americii de Nord\u201d, explic\u0103 Smith.<\/p>\n

Evenimentul a creat linia care separ\u0103 r\u00e2urile care se vars\u0103 \u00een Pacific de cele care se vars\u0103 \u00een Atlantic. A creat noi limite de habitat pentru fauna s\u0103lbatic\u0103. Acestea au influen\u021bat evolu\u021bia speciilor.<\/p>\n

Descoperirea rezolv\u0103 un puzzle geologic vechi de peste un secol. Demonstreaz\u0103 c\u0103 mun\u021bii nu sunt forma\u021biuni statice, ci se pot ridica \u0219i cobor\u00ee dramatic.<\/p>\n

Fenomenul picur\u0103rii litosferice a mai fost observat \u0219i \u00een alte zone ale lumii. Sub Midwestul SUA, oamenii de \u0219tiin\u021b\u0103 au descoperit recent un fenomen similar.<\/p>\n","protected":false},"excerpt":{"rendered":"

R\u00e2urile \u00ee\u0219i croiesc drumul curg\u00e2nd \u00een jos de-a lungul anilor. De obicei, urmeaz\u0103 pantele \u0219i brazdele oric\u0103rui lan\u021b muntos pe care \u00eel \u00eent\u00e2lnesc. \u0218i totu\u0219i, r\u00e2ul Green traverseaz\u0103 mun\u021bii pentru … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":675657,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/675656"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=675656"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/675656\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/675657"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=675656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=675656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=675656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}