Copy Of 5b.waktu Geologi I

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Waktu Geologi

• Satuan Waktu dalam Geologi 106 tahun umur relatif • Umur (geologi) suatu batuan umur absolut Penentuan Umur • Umur relatif: Hukum Super posisi, Fossil, HukumCrosscutting (potong memotong).

Umur relatif berdasarkan Hkm. Superposisi (Umur A > B > C )



C B



A

Penentuan Umur relatif berdasarkan Fosil

»

Hkm.Cross Cutting

Umur Absolut  Pentarikhan berdasarkan waktu paruh peluruhan Unsur radioaktif (dinyatakan dalam angka): KAr, C14 dll  Paleo magnet batuan  Asam Amino  Dll

Pembagian waktu Geologi    

Kurun (eon) Masa (era) Zaman (period) Kala (epoch)

Skala WaktuGeologi

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