வார்ப்புரு:புவியியல் காலக்கோட்டு காலஅளவுகோல்
&lt;timeline&gt;
 ImageSize  = width:800 height:120
 PlotArea   = left:65 right:15 bottom:20 top:5
 AlignBars  = justify
 
 Colors =
   id:neogene   value:rgb(0.99215,0.8,0.54)
   id:paleogene value:rgb(1,0.7019,0)
   id:cretaceous   value:rgb(0.5,0.764,0.1098)
   id:jurassic      value:rgb(0.302,0.706,0.5) 
   id:triassic    value:rgb(0.403,0.765,0.716) 
   id:permian   value:rgb(0.404,0.776,0.867) 
   id:carboniferous     value:rgb(0.6,0.741,0.855)
   id:devonian  value:rgb(0.6,0.6,0.788)
   id:silurian  value:rgb(0.694,0.447,0.714)
   id:ordovician      value:rgb(0.976,0.506,0.651)
   id:cambrian  value:rgb(0.984,0.5,0.373)
   id:neoproterozoic    value:rgb(0.792,0.647,0.583)
   id:mesoproterozoic    value:rgb(0.867,0.761,0.533)
   id:paleoproterozoic    value:rgb(0.702,0.698,0.369)
   id:eoarchean    value:rgb(0.5,0.565,0.565)   
   id:paleoarchean    value:rgb(0.6,0.592,0.569)   
   id:mesoarchean    value:rgb(0.698,0.65,0.6)   
   id:neoarchean    value:rgb(0.796,0.804,0.784)   
   id:ediacaran     value:rgb(0.918,0.847,0.737)   
   id:cryogenian    value:rgb(0.863,0.671,0.667)
   id:tonian        value:rgb(0.796,0.643,0.424)  
   id:stratherian   value:rgb(1,1,0.8)   # light yellow
   id:calymmian     value:rgb(1,1,0.8)   # light yellow
   id:orosirian     value:rgb(1,1,0.8)   # light yellow
   id:rhyacian      value:rgb(1,1,0.8)   # light yellow
   id:siderian     value:rgb(1,1,0.8)   # light yellow
   id:ectasian      value:rgb(1,1,0.8)   # light yellow
   id:stenian      value:rgb(1,1,0.8)   # light yellow
   id:cenozoic   value:rgb(1,1,0)
   id:mesozoic   value:rgb(0.5,0.6784,0.3176)
   id:paleozoic  value:rgb(0.5,0.7098,0.835)
   id:phanerozoic value:rgb(0.7019,0.886,0.819)
   id:proterozoic value:rgb(0.8,0.85,0.568)
   id:archean   value:rgb(0.6,0.6784,0.6745)
   id:hadean value:rgb(0.4,0.4,0.4)
   id:precambrian value:rgb(0.9,0.9,0.9)
   id:black  value:black
   id:white  value:white
 
 Period      = from:-4567.17 till:0
 TimeAxis    = orientation:horizontal
 ScaleMajor  = unit:year increment:500 start:-4500
 ScaleMinor  = unit:year increment:100 start:-4500
 
 Define $markred = text:&quot;*&quot; textcolor:red shift:(0,3) fontsize:10
 
 PlotData=
   align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 
   bar:supereon
 
   from: start till: -542 text:[[Precambrian]] color:precambrian
 
 
   bar:eon
 
   at:      0   align:right  $markred
   at:   -542   align:left   $markred shift:(2,3)
   from: -542   till:    0   text:[[Phanerozoic]]  color:phanerozoic   
   from:-2500   till: -542   text:[[Proterozoic]]  color:proterozoic   
   from:-3800   till: -2500  text:[[Archean]]      color:archean   
   from: start  till: -3800  text:[[Hadean]]       color:hadean
 
 
   bar:era
 
   from:  -65.5 till:    0   text:[[Cenozoic|C~z]] shift:(0,1.5)        color:cenozoic        
   from: -251   till:  -65.5 text:[[Mesozoic|Meso~zoic]] shift:(0,1.5)  color:mesozoic        
   from: -542   till: -251 text:[[Paleozoic|Paleo~zoic]] shift:(0,1.5)  color:paleozoic 
   from: -1000  till:  -542  text:[[Neoproterozoic|Neoprote-~rozoic]] shift:(0,1.8) color:neoproterozoic   
   from:-1600   till:  -1000  text:[[Mesoproterozoic]] color:mesoproterozoic  
   from:-2500   till: -1600  text:[[Paleoproterozoic]] color:paleoproterozoic 
   from:-2800   till: -2500  text:[[Neoarchean|Neo-~archean]] shift:(0,1.5)     color:neoarchean       
   from:-3200   till: -2800  text:[[Mesoarchean|Meso-~archean]] shift:(0,1.5)   color:mesoarchean      
   from:-3600   till: -3200  text:[[Paleoarchean|Paleo-~archean]] shift:(0,1.5) color:paleoarchean     
   from:-3800   till: -3600  text:[[Eoarchean|Eoar-~chean]] shift:(0,0.5) color:eoarchean fontsize:6       
   from:start   till: -3800  color:white
 
   bar:period
 
   fontsize:6
   from:   -23.03 till:    0    color:neogene
   from:  -65.5 till:   -23.03  color:paleogene
   from: -145.5   till:  -65.5  color:cretaceous
   from: -199.6   till: -145.5  color:jurassic
   from: -251   till: -199.6    color:triassic
   from: -299   till: -251      color:permian
   from: -359.2   till: -299    color:carboniferous
   from: -416 till: -359.2      color:devonian
   from: -443.7 till: -416      color:silurian
   from: -488.3   till: -443.7  color:ordovician
   from: -542   till: -488.3    color:cambrian
 
   from: -630   till:  -542  text:[[Ediacaran|Ed.]] color:ediacaran
   from: -850   till:  -630  text:[[Cryogenian|Cryo-~genian]] color:cryogenian shift:(0,0.5)
   from: -1000  till:  -850  text:[[Tonian|Ton-~ian]] color:tonian shift:(0,0.5)
   from: -1200  till:  -1000 text:[[Stenian|Ste-~nian]] color:mesoproterozoic shift:(0,0.5)
   from: -1400  till:  -1200 text:[[Ectasian|Ect-~asian]] color:mesoproterozoic shift:(0,0.5)
   from: -1600  till:  -1400 text:[[Calymmian|Calym-~mian]] color:mesoproterozoic shift:(0,0.5)
   from: -1800  till:  -1600 text:[[Statherian|Stath-~erian]] color:paleoproterozoic shift:(0,0.5)
   from: -2050  till:  -1800 text:[[Orosirian|Oro-~sirian]] color:paleoproterozoic shift:(0,0.5)
   from: -2300  till:  -2050 text:[[Rhyacian|Rhy-~acian]] color:paleoproterozoic shift:(0,0.5)
   from: -2500  till:  -2300 text:[[Siderian|Sid-~erian]] color:paleoproterozoic shift:(0,0.5)
   from: start  till:  -2500 color:white
 &lt;/timeline&gt;
 
 &lt;timeline&gt;
 ImageSize  = width:800 height:100
 PlotArea   = left:65 right:15 bottom:20 top:5
 AlignBars  = justify
 
 Colors =
   id:quaternary value:rgb(0.9,0.9,0.5)
   id:neogene   value:rgb(0.99215,0.8,0.54)
   id:paleogene value:rgb(1,0.7019,0)
   id:cretaceous   value:rgb(0.5,0.764,0.1098)
   id:jurassic      value:rgb(0.302,0.706,0.5) 
   id:triassic    value:rgb(0.403,0.765,0.716) 
   id:permian   value:rgb(0.404,0.776,0.867) 
   id:carboniferous     value:rgb(0.6,0.741,0.855)
   id:devonian  value:rgb(0.6,0.6,0.788)
   id:silurian  value:rgb(0.694,0.447,0.714)
   id:ordovician      value:rgb(0.976,0.506,0.651)
   id:cambrian  value:rgb(0.984,0.5,0.373)
   id:cenozoic   value:rgb(1,1,0)
   id:mesozoic   value:rgb(0.5,0.6784,0.3176)
   id:paleozoic  value:rgb(0.5,0.7098,0.835)
   id:phanerozoic value:rgb(0.7019,0.886,0.819)
   id:black  value:black
   id:white  value:white
   id:darkgreen value:rgb(0,0.35,0)
 
 
 Period      = from:-542 till:0
 TimeAxis    = orientation:horizontal
 ScaleMajor  = unit:year increment:100 start:-500
 ScaleMinor  = unit:year increment:10  start:-540
 
 Define $markred   = text:&quot;*&quot; textcolor:red   shift:(0,3) fontsize:10
 Define $markgreen = text:&quot;*&quot; textcolor:darkgreen shift:(0,3) fontsize:10
 
 PlotData=
   align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 
   bar:eon
   at:      0   align:right  $markred 
   at:   -542   align:left   $markred shift:(2,3)
   from: -542   till:    0   text:[[Phanerozoic]] color:phanerozoic
 
   bar:era
   at:      0   align:right  $markgreen
   at:    -65.5 align:left   $markgreen shift:(2,3)
   from:  -65.5 till:    0   text:[[Cenozoic]] color:cenozoic
   from: -251   till:  -65.5 text:[[Mesozoic]] color:mesozoic
   from: -542   till: -251   text:[[Paleozoic]] color:paleozoic
 
   bar:period fontsize:8
   from: -2.588  till: 0 color:quaternary
   from: -23.03    till:  -2.588     text:[[Neogene|Neo-~gene]] shift:(0,0.5) color:neogene
   from: -65.5  till:  -23.03   text:[[Paleogene|Paleo-~gene]] shift:(0,0.5) color:paleogene
   from: -145.5   till:  -65.5 text:[[Cretaceous]] color:cretaceous
   from: -199.6   till: -145.5   text:[[Jurassic]] color:jurassic
   from: -251.4   till: -199.6   text:[[Triassic]]   color:triassic
   from: -299   till: -251.4   text:[[Permian]]      color:permian
   from: -359.2   till: -299   text:[[Carboniferous]] color:carboniferous
   from: -416 till: -359.2   text:[[Devonian]]        color:devonian
   from: -443.7 till: -416 text:[[Silurian|Sil-~urian]] shift:(0,0.5) color:silurian
   from: -488.3   till: -443.7 text:[[Ordovician]] color:ordovician
   from: -542   till: -488.3   text:[[Cambrian]]   color:cambrian
 &lt;/timeline&gt;
 
 &lt;timeline&gt;
 ImageSize = width:800 height:100
 PlotArea  = left:65 right:15 bottom:20 top:5
 AlignBars = justify
 
 Colors =
   id:quaternary value:rgb(0.9,0.9,0.5)
   id:neogene   value:rgb(0.99215,0.8,0.54)
   id:paleogene value:rgb(1,0.7019,0)
   id:cenozoic   value:rgb(1,1,0)
   id:holocene   value:rgb(1,1,0.702)
   id:pleistocene  value:rgb(1,0.922,0.384)
   id:pliocene     value:rgb(1,0.922,0.675)
   id:miocene      value:rgb(1,0.871,0)
   id:oligocene    value:rgb(0.918,0.776,0.447)
   id:eocene       value:rgb(0.918,0.678,0.263)
   id:paleocene    value:rgb(0.92,0.576,0.005)
   id:black  value:black
   id:white  value:white
   id:darkgreen value:rgb(0,0.35,0)
 
 Period     = from:-65.5 till:0
 TimeAxis   = orientation:horizontal
 ScaleMajor = unit:year increment:10 start:-60
 ScaleMinor = unit:year increment:1  start:-65
 
 Define $markgreen = text:&quot;*&quot; textcolor:darkgreen  shift:(0,3) fontsize:10
 
 PlotData=
   align:center textcolor:black fontsize:8 mark:(line,black) width:25 shift:(0,-5)
 
   bar:era
   at:     0  align:right $markgreen 
   at: start  align:left  $markgreen shift:(2,3)
   from:start  till:  0    text:[[Cenozoic]] color:cenozoic
 
   bar:period
   from: -2.588 till: 0   text:[[Quaternary|Q.]] color:quaternary
   from: -23.03   till:  -2.588   text:[[Neogene]] color:neogene
   from:start  till: -23.03   text:[[Paleogene]] color:paleogene
 
   bar:epoch
   from: -0.1  till:  0  color:holocene
   from: -2.588  till: -0.1  text:[[Pleistocene|P]] color:pleistocene
   from: -5.332    till: -2.588  text:[[Pliocene|Plio-~cene]] shift:(0,1) color:pliocene fontsize:7
   from:-23.03    till: -5.332    text:[[Miocene]] color:miocene
   from:-33.9    till:-23.03    text:[[Oligocene]] color:oligocene
   from:-55.8    till:-33.9    text:[[Eocene]]     color:eocene
   from:start  till:-55.8    text:[[Paleocene]]    color:paleocene
 &lt;/timeline&gt;
 
 &lt;center&gt;&lt;small&gt;மில்லியன் ஆண்டுகள்&lt;/small&gt;&lt;/center&gt;&lt;noinclude&gt;
 [[பகுப்பு:புவியியல்]]