Geokronoloogiline skaala

Geokronoloogiline skaala on ajaskaala, mis jagab geoloogilise aja ehk Maa ajaloo väiksemateks geokronoloogilisteks ning geokronomeetrilisteks üksusteks. Skaala on välja töötatud peamiselt fossiilide leviku uurimise alusel.

<td width="15%" height="12"> EOON 
<td width="15%" valign="middle"> AEGKOND 
<td width="15%"> AJASTU 
<td width="15%"> AJASTIK 
<td width="10%"> Algus (miljonit aastat tagasi) 
<td width="15%" height="14">.

<td width="15%" valign="middle">.
<td width="15%">. 
<td width="15%">. 
<td width="15%" rowspan="34" bgcolor="#FFAEAE">Fanerosoikum
<td width="15%" rowspan="7" valign="middle" bgcolor="#FDE3B3">Kainosoikum

Uusaegkond

<td width="15%" rowspan="2" bgcolor="#FFE1E1"> Kvaternaar

<td bgcolor="#FFE1E1"> Holotseen 
<td width="10%" bgcolor="#FFE1E1"> 0,0115 

<td width="15%" bgcolor="#FFE1E1"> Pleistotseen 
<td bgcolor="#FFE1E1"> 2,588 

<td width="15%" rowspan="2" bgcolor="#FFE1E1"> Neogeen

<td width="15%" bgcolor="#FFE1E1"> Pliotseen 
<td width="10%" bgcolor="#FFE1E1"> 5,332 
<td width="15%" bgcolor="#FFE1E1"> Miotseen 
<td width="10%" bgcolor="#FFE1E1"> 23,03
<td width="15%" rowspan="3" bgcolor="#FEEFD3"> Paleogeen
<td width="15%" bgcolor="#FEEFD3"> Oligotseen 
<td width="10%" bgcolor="#FEEFD3"> 33,9 ± 0,1 
<td bgcolor="#FEEFD3"> Eotseen 
<td width="10%" bgcolor="#FEEFD3"> 55,8 ± 0,2 
<td bgcolor="#FEEFD3"> Paleotseen 
<td width="10%" bgcolor="#FEEFD3"> 65,5 ± 0,3
<td width="15%" rowspan="8" valign="middle" bgcolor="#EDCDD9"> <p align="center">Mesosoikum
<p align="center">Keskaegkond <td width="15%" rowspan="2" bgcolor="#F4E3EA"> Kriit 
<td width="15%" bgcolor="#F4E3EA"> Hilis-Kriit 
<td width="10%" bgcolor="#F4E3EA"> 99,6 ± 0,9 
<td width="15%" bgcolor="#F4E3EA"> Vara-Kriit 
<td width="10%" bgcolor="#F4E3EA"> 145,5 ± 4,0
<td width="15%" rowspan="3" bgcolor="#EFD3DD">Juura 
<td width="15%" bgcolor="#EFD3DD">Hilis-Juura 
<td width="10%" bgcolor="#EFD3DD">161,2 ± 4,0 
<td width="15%" bgcolor="#EFD3DD">Kesk-Juura 
<td width="10%" bgcolor="#EFD3DD">175,6 ± 2,0 
<td width="15%" bgcolor="#EFD3DD">Vara-Juura 
<td width="10%" bgcolor="#EFD3DD">199,6 ± 0,6
<td width="15%" rowspan="3" bgcolor="#F4E3EA"> Triias
<td width="15%" bgcolor="#F4E3EA"> Hilis-Triias 
<td width="10%" bgcolor="#F4E3EA"> 228,0 ± 2,0 
<td width="15%" bgcolor="#F4E3EA"> Kesk-Triias 
<td width="10%" bgcolor="#F4E3EA"> 245,0 ± 1,5 
<td width="15%" bgcolor="#F4E3EA"> Vara-Triias 
<td width="10%" bgcolor="#F4E3EA"> 251,0 ± 0,4
<td width="15%" rowspan="19" bgcolor="#FFE8E8">Paleosoikum

Vanaaegkond
<td width="15%" rowspan="3" bgcolor="#FFE8E8">Perm 
<td width="15%" bgcolor="#FFE8E8">Loping 
<td width="10%" bgcolor="#FFE8E8">260,4 ± 0,7 
<td width="15%" bgcolor="#FFE8E8">Guadalup 
<td width="10%" bgcolor="#FFE8E8">270,6 ± 0,7 
<td width="15%" height="20%" bgcolor="#FFE8E8">Cisural
<td width="10%" bgcolor="#FFE8E8">299,0 ± 0,8
<td width="15%" rowspan="2" bgcolor="#FFDFDF">Karbon  
<td width="15%" height="20%" bgcolor="#FFDFDF">Pennsylvania
<td width="10%" bgcolor="#FFDFDF">318,1 ± 1,3 
<td width="15%" height="20%" bgcolor="#FFDFDF">Mississippi
<td width="10%" bgcolor="#FFDFDF">359,2 ± 2,5
<td width="15%" rowspan="3" bgcolor="#FFE8E8">Devon 
<td width="15%" height="20%" bgcolor="#FFE8E8">Hilis-Devon
<td width="10%" bgcolor="#FFE8E8"> 385,3 ± 2,6 
<td width="15%" height="20%" bgcolor="#FFE8E8">Kesk-Devon
<td width="10%" bgcolor="#FFE8E8">397,5 ± 2,7 
<td width="15%" height="20%" bgcolor="#FFE8E8">Vara-Devon
<td width="10%" bgcolor="#FFE8E8">416,0 ± 2,8
<td width="15%" rowspan="4" bgcolor="#FFDFDF">Silur  

<td width="15%" height="20%" bgcolor="#FFDFDF">Přidoli
<td width="10%" bgcolor="#FFDFDF">418,7 ± 2,7 
<td width="15%" height="20%" bgcolor="#FFDFDF">Ludlow
<td width="10%" bgcolor="#FFDFDF">422,9 ± 2,5 
<td width="15%" height="20%" bgcolor="#FFDFDF">Wenlock
<td width="10%" bgcolor="#FFDFDF">428,2 ± 2,3 
<td width="15%" height="20%" bgcolor="#FFDFDF">Llandovery
<td width="10%" bgcolor="#FFDFDF">443,7 ± 1,5
<td width="15%" rowspan="3" bgcolor="#FFE8E8">Ordoviitsium
<td width="15%" height="20%" bgcolor="#FFE8E8">Hilis-Ordoviitsium
<td width="10%" bgcolor="#FFE8E8">460,9 ± 1,6 
<td width="15%" height="20%" bgcolor="#FFE8E8">Kesk-Ordoviitsium
<td width="10%" bgcolor="#FFE8E8">471,8 ± 1,6 
<td width="15%" height="20%" bgcolor="#FFE8E8">Vara-Ordoviitsium
<td width="10%" bgcolor="#FFE8E8">488,3 ± 1,7
<td width="15%" rowspan="4" bgcolor="#FFDFDF">Kambrium
<td width="15%" height="20%" bgcolor="#FFDFDF">Furong
<td width="10%" bgcolor="#FFDFDF">499
<td width="15%" height="20%" bgcolor="#FFDFDF">Kolmas ajastik
<td width="10%" bgcolor="#FFDFDF">510
<td width="15%" height="20%" bgcolor="#FFDFDF">Teine ajastik
<td width="10%" bgcolor="#FFDFDF">521
<td width="15%" height="20%" bgcolor="#FFDFDF">Terre-Neuve
<td width="10%" bgcolor="#FFDFDF">542,0 ± 1,0
<td width="15%" rowspan="12" valign="middle" bgcolor="#9DFF9D"> Proterosoikum

Agueoon
<td width="15%" rowspan="4" valign="middle" bgcolor="#CCFFCC">Neoproterosoikum
<td width="15%" height="20%" rowspan="2" valign="top" bgcolor="#CCFFCC"> Ediacara
<td width="15%" rowspan="12" valign="middle"> –
<td width="10%" valign="top" bgcolor="#CCFFCC">600 
<td width="10%" rowspan="2" bgcolor="#CCFFCC">850 
<td width="15%" height="20%" valign="top" bgcolor="#CCFFCC">Krüogeen
<td width="15%" height="20%" valign="top" bgcolor="#CCFFCC">Ton
<td width="10%" bgcolor="#CCFFCC">1000
<td width="15%" rowspan="3" valign="middle" bgcolor="#E8FFE8">Mesoproterosoikum
<td width="15%" height="20%" valign="top" bgcolor="#E8FFE8">Sten
<td width="10%" bgcolor="#E8FFE8">1200 
<td width="15%" height="20%" valign="top" bgcolor="#E8FFE8">Ectas
<td width="10%" bgcolor="#E8FFE8">1400 
<td width="15%" height="20%" valign="top" bgcolor="#E8FFE8">Calymm
<td width="10%" bgcolor="#E8FFE8">1600
<td width="15%" rowspan="5" valign="middle" bgcolor="#CCFFCC">Paleoproterosoikum
<td width="15%" height="20%" valign="top" bgcolor="#CCFFCC">Stather
<td width="10%" bgcolor="#CCFFCC">1800 
<td width="15%" height="20%" valign="top" bgcolor="#CCFFCC">Orosir
<td width="10%" rowspan="2" bgcolor="#CCFFCC">2050 
<td width="15%" height="20%" rowspan="2" valign="top" bgcolor="#CCFFCC">Rhyac
<td width="10%" bgcolor="#CCFFCC">2300 
<td width="15%" height="20%" valign="top" bgcolor="#CCFFCC">Sider
<td width="10%" bgcolor="#CCFFCC">2500
<td width="15%" rowspan="4" valign="middle" bgcolor="#C4C4FF"> Arhaikum

Ürgeoon
<td width="15%" height="20%" valign="top" bgcolor="#E1E1FF"> Neoarhaikum
<td width="15%" rowspan="4" align="center" valign="middle">  – 
<td width="15%" rowspan="4" align="center" valign="middle">–
<td width="10%" valign="middle" bgcolor="#E1E1FF">2800
<td width="15%" height="20%" valign="top" bgcolor="#E1E1FF">Mesoarhaikum
<td width="10%" valign="top" bgcolor="#E1E1FF">3200 
<td width="15%" height="20%" valign="top" bgcolor="#E1E1FF">Paleoarhaikum
<td width="10%" valign="top" bgcolor="#E1E1FF">3600 
<td width="15%" height="20%" valign="top" bgcolor="#E1E1FF">Eoarhaikum
<td width="10%" valign="top" bgcolor="#E1E1FF">ca 4500   

 Vaata ka 
Eesti kronostratigraafiline skaala

 Välislingid 
Stratigraafia ja geokronoloogiline skaala on pidevas arengus – Ivar Puura, Tõnu Meidla.
Geokronoloogiline skaala Eesti Stratigraafia Komisjoni kodulehel.

Kategooria:Stratigraafia
Kategooria:Skaalad