Kivimite vanus
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Transcript of Kivimite vanus
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Kivimite vanus
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Kivimite suhteline vanus
• Kivimite suhteline vanus näitab, millised kivimid tekkisid varem, millised hiljem
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Kivimite absoluutne vanus
• Kivimite absoluutne vanus näitab kivimi vanust selle tekkimisest
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Geoloogiline ajaarvamine
• Geoloogiline ajaarvamine e. geokronoloogiline skaala on maakoore kihtide tekkimise järjekorra ja aja kindlaksmääramise süsteem
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Geoloogilise ajaarvamise ühikud
• Eoon on geoloogilise ajaarvamise suurim ühik.
• Aegkond on geokronoloogilise skaala hierarhias eoonist järgmine väiksem üksus
• Ajastu on geoloogilise ajaarvamise suuruselt kolmas ühik eooni ja aegkonna järel.
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Ürgeoon
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Agueoon
• Krüogeen
• Ediacara
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Krüogeen
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Ediacara
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Fanerosoikum
• Vanaaegkond
• Keskaegkond
• Uusaegkond
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Vanaaegkond
• Kambrium
• Ordoviitsium
• Silur
• Devon
• Karbon
• Perm
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Kambrium
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Ordoviitsium
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Silur
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Devon
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Karbon
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Perm
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Keskaegkond
• Triias
• Juura
• Kriit
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Triias
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Juura
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Kriit
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Uusaegkond
• Paleogeen
• Neogeen
• Kvaternaar
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Paleogeen
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Neogeen
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Kvaternaar
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Lingid
• http://www.ut.ee/BGGM/eluareng/
• http://et.wikipedia.org/wiki/Geokronoloogiline_skaala
• http://en.wikipedia.org/wiki/Geologic_time_scale
• http://www.egeos.ee/
• http://www.gi.ee/stratigraphy/