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Interior Bumi

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PLATE : dalam pengertian geologi adalahpotongan besar tubuh batuan yang bersifat

solid dan rigid

TEKTONIK  berasal dari bahasa Yunani yangberarti “to built” 

TEKTONIK LEMPENG : menjelaskan bahwapermukaan bumi tersusun atas lempeng-lempeng

TEORI TEKTONIK LEMPENG :Menjelaskan bahwa lapisan terluar bumiterbagi atas beberapa lempeng-lempeng besardan kecil yang bergerak relatif satu sama lain.

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 Abraham Ortelius (1596) mencetuskan suatuide yang menganggap bahwa Benua Amerikatelah terpisah dari Benua Eropa olehperistiwa gempabumi dan banjir

Perkembangan Teori Tektonik Lempeng

1912 : Alfred Lothar Wegener, mencetuskan teori “Continental Drift” , menyatakan bahwa superkontinen PANGEA mulai terpecah sejak 200 juta ma,

 Alexander Du Toit, kemudian menambahkan bahwaPANGEA awalnya terpecah menjadi LAURASIA diutara dan GONDWANA di selatan, kemudian keduapecahan tersebut terpecah lagi menjadi beberapalempeng yang sekarang kita kenal (EURASIA, AUSTRALIA, dsb)

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Perkembangan Teori Tektonik Lempeng

1924 : Alfred Lothar Wegener , menyatakanbahwa benua mengapung di atas lantaisamudra yang pasif.

Hess (1962) dan Dietz (1961) mengusulkan

konsep “Sea floor Spreading”, bahwa lantaisamudra (kerak samudra) yang baru terbentuk pada “mid oceanic Ridge” 

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4 Faktor penting yang mendasari

Perkembangan Teori Tektonik Lempeng

(1) demonstration of the ruggedness and youth of the ocean floor;

(2) confirmation of repeated reversals of theEarth magnetic field in the geologic past;

(3) emergence of the seafloor-spreadinghypothesis and associated recycling of oceanic

crust;(4) precise documentation that the world'searthquake and volcanic activity isconcentrated along oceanic trenches andsubmarine mountain ranges.

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4 Faktor penting yang mendasari

Perkembangan Teori Tektonik Lempeng

(1) demonstration of the ruggedness and youth of the ocean floor;

(2) confirmation of repeated reversals of theEarth magnetic field in the geologic past

(3) emergence of the seafloor-spreadinghypothesis and associated recycling of oceanic

crust;(4) precise documentation that the world'searthquake and volcanic activity isconcentrated along oceanic trenches andsubmarine mountain ranges.

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 Anomali magnetik pada Lempeng Samudra

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(1) demonstration of the ruggedness and youth of the ocean floor;

(2) confirmation of repeated reversals of theEarth magnetic field in the geologic past

(3) emergence of the seafloor-spreadinghypothesis and associated recycling of oceanic

crust;(4) precise documentation that the world'searthquake and volcanic activity isconcentrated along oceanic trenches andsubmarine mountain ranges.

4 Faktor penting yang mendasari

Perkembangan Teori Tektonik Lempeng

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(1) demonstration of the ruggedness and youth of the ocean floor;

(2) confirmation of repeated reversals of theEarth magnetic field in the geologic past

(3) emergence of the seafloor-spreadinghypothesis and associated recycling of oceaniccrust;

(4) precise documentation that the world's

earthquake and volcanic activity isconcentrated along oceanic trenches andsubmarine mountain ranges.

4 Faktor penting yang mendasariPerkembangan Teori Tektonik Lempeng

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EULERIAN POLE

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TRIPLE JUNCTION

Triple Junction adalah suatu titik / tempatpertemuan tiga lempeng tektonik 

Berdasarkan pada jenis-jenis bataslempeng, terdapat beberapa (16) typetriple junction, misal R-R-R (ridge-ridge-

ridge), RTF (ridge-trench-transform)

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