bhaumiki ka itihaas

bhaumiki ka itihaas bahut puraana hai. shaayad 'pruthvi ki utpatti' sambandhi vichaaron ko sabse pehla bhoovaijnyaaanik vichaar kaha ja sakta hai.

  • san 1749 mein gaargis-looi leklark (Georges-Louis Leclerc) ne pradarshit kiya ki pruthvi ki aayu baaibal mein varnit aayu se kai guna adhik hai.
  • skautalaind ke bhoovijnyaaani James hattan (James Hutton) ka drudh mat tha ki jin prakramon ne pruthvi ko ab tak badla hai ve hi ab bhi ise badal rahe hain.
  • unneesaveen shati mein bhoovijnyaaan ke kshetr mein bahut pragati hui. san 1815 mein William smith ne vishv ka pratham bhoovaijnyaaanik maanachitr banaaya. ismein unhone 'straata' ke apne gyaan ka upayog kiya.
  • Charles lel (Charles Lyell) us samay ke sabse vikhyaat shaikshik bhoovaijnyaaanik the. unhone bataaya ki bhinn-bhinn straata, bhinn-bhinn jeevaashmon se sanbandhit hain.
  • daarvin ke samay tak adhikaansh bhoovaijnyaaanik gyaan jeevaashmon ke adhyayan se praapt gyaan hi tha. isaliye daarvin ke vikaasavaad ne aadhunik bhoovaijnyaaanik chintan mein mahatvapoorn bhoomika nibhaai.
  • beesaveen shati mein bhoovaijnyaaanik pruthvi ki aayu aur adhik bataane lage. jahaaain pehle million varshon ki baat hoti thi, ab 'billion varshon' ki baat hone lagi. vaiganar (Wagner) ke 'mahaadveepeeya shift' ke siddhaant ko bal mila.

baahari kadiyaaain