Pergeseran benua: Perbedaan antara revisi

[[Berkas:Antonio Snider-Pellegrini Opening of the Atlantic.jpg|jmpl|300px|Ilustrasi [[Antonio Snider-Pellegrini]] mengenai [[Samudera Atlantik]] yang tertutup dan terbuka (1858).]]

 

 

Wegener mendapati bahwa timur [[Amerika Selatan]] cocok jika dihubungkan dengan barat [[Afrika]], memberi petunjuk bahwa semua benua dahulu pernah bersatu. Wegener mencari bebatuan dan fosil di dua sisi benua yang berbatasan dengan [[Samudra Atlantik]] untuk membuktikan hipotesisnya. Dia berhasil menemukan bukti-bukti tersebut tetapi tidak dapat menjelaskan mekanisme pergerakan benua dan gagasannya ditentang oleh organisasi seperti American Petroleum Society.{{Sfn|Twigger|2014|p=25-16|ps=, "Wegener, from an early age, noticed what every schoolchild notices: South America fits into the right angle of west Africa; in fact the land mass of earth all looks as if it was once joined. Wegener searched for evidence of his theory – finding rocks and fossils that matched on either side of the Atlantic Ocean. He provided the evidence but no mechanism and was opposed heatedly by such august organisations as the American Petroleum Society."}} Hipotesisnya tidak diacuhkan hingga kematiannya pada 1930.{{Sfn|Twigger|2014|p=25|ps=, "Alfred Wegener, a German explorer and scientist, was disbelieved and ridiculed for his continental-drift theory – the theory, put forward in 1912, that the world was fissured, like an infant’s skull, and yet that these fissures were actually fruitful, fructifying with molten magma deep under the sea, expanding, sliding over each other. Wegener was ignored from his untimely death in Greenland in 1930 untul the 1950s, a warning shot to those who would propose a theory that looks right but can’t be easily explained."}}

 

Pada tahun 1960-an, ditemukan bahwa magma berada di sepanjang garis [[Tektonika lempeng|lempeng tektonik]], menandakan dasar laut bergeser seperti yang diperkirakan Wegener.{{Sfn|Twigger|2014|p=26|ps=, "The discovery in the 1960s that the sea floor really did spread as Wegener had speculated, with magma bubbling up along tectonic plate lines, finally brought respectability to a theory that had been derided and lampooned. Scientists agreed that circulating hot liquid centre of the earth was how the plates, with the continents sitting on top of them, moved. Just as rice in a pan of boiling water will circulate, so the surface of the earth was in constant movement, shoved by the circulating movement of the magma below."}}

 

== Referensi ==

{{Citebook|last=Twigger|first=Robert|date=2014|url=https://www.worldcat.org/oclc/883962326|title=Red Nile : A Biography of the World's Greatest River|location=New York|publisher=St. Martin's Press|isbn=978-1-250-05233-9|edition=satu AS|oclc=883962326|ref={{Sfnref|Twigger|2014}}|url-status=live}}

 

 

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