aitihaasik bhoovijnyaaan

aitihaasik bhoovijnyaaan (Historical geology) ke antargat bhoovijnyaaan ke siddhaanton ka upayog karke pruthvi ke itihaas ki punarrachana ki jaati hai aur use samajhne ki koshish ki jaati hai. aitihaasik bhoovijnyaaan un prakriyaaon par apna dhyaan keindrit karta hai jo pruthvi ki satah tatha upasatah ko badalate hain. yeh stariki (stratigraphy), sanrachana-bhoovijnyaaan tatha pailiontolauji (paleontology) aadi ka upayog karke in ghatnaaon ke kram ko nirdhaarit karta hai. aitihaasik bhoovijnyaaan vibhinn bhoovaijnyaaanik kaalon mein viksit paadapon evam jantuon par bhi dhyaan keindrit karta hai. beesaveen shataabdi ke poorvaardh mein rediyosakriyta evam anya rediyomaapi kaalanirdhaaran takaneekon ke vikaas se aitihaasik bhoovijnyaaan ko bahut sahaayata mili.

kisi sthaan ke bhoovaijnyaaanik itihaas ki achhi jaankaari se aarthik bhoovijnyaaan ke kshetr mein bahut madad milti hai. aarthik bhoovijnyaaan, oorja evam kachche maal ki khoj evam nishkarshan ka vigyaan hai. isi prakaar, aitihaasik bhoovijnyaaan ki gahari samajh ke dvaara paryaavaraneeya bhoovijnyaaan (Environmental geology) mein bahut madad milti hai, jaise bhookamp evam jvaalaamukhi aadi ke baare mein jaankaari.

sankshipt itihaas

ion (eon) mahaakalp (era) kalp (period) yug (epoch) aarambh
Phanerozoic Cenozoic Quaternary Holocene 0.0117
Pleistocene 2.558
Neogene Pliocene 5.333*
Miocene 23.030*
Paleogene Oligocene 33.9*
Eocene 56.0*
Paleocene 66.0*
Mesozoic Cretaceous Late Cretaceous 100.5*
Early Cretaceous c. 145.0
Jurassic Late Jurassic 163.5 ± 1.0
Middle Jurassic 174.1 ± 1.0*
Early Jurassic 201.3 ± 0.2*
Triassic Late Triassic c. 235*
Middle Triassic 247.2
Early Triassic 252.2 ± 0.5*
Paleozoic Permian 298.9 ± 0.2*
Carboniferous Pennsylvanian 323.2 ± 0.4*
Mississippian 358.9 ± 0.4*
Devonian 419.2 ± 3.2*
Silurian 443.4 ± 1.5*
Ordovician 485.4 ± 1.9*
Cambrian 541.0 ± 1.0*
Proterozoic Neoproterozoic Ediacaran Precambrian c. 635*
Cryogenian 850
Tonian 1000
Mesoproterozoic Stenian 1200
Ectasian 1400
Calymmian 1600
Paleoproterozoic Statherian 1800
Orosirian 2050
Rhyacian 2300
Siderian 2500
Archean Neoarchean 2800
Mesoarchean 3200
Paleoarchean 3600
Eoarchean 4000
Hadean 4567