kaayaantarit shail

roopaantarit chattaan ke ek prakaar (kvaartajaait)

aagneya evam avasaadi shailon mein taap aur daab ke kaaran parirvatan ya roopaantaran ho jaane se kaayaantarit shail (metamorphic rock) ka nimaarn hota hain. roopaantarit chattaanon (kaayaantarit shail) pruthvi ki papadi ke ek bade hissa se bani hoti hai aur banaavat, raasaayanik aur khanij sanyojan dvaara inko vargeekrut kiya jaata hai|[1]

anukram

metamaurfik khanij

ve khanij jo bahut uchch daab aur taapamaan par metamaurfism ki prakriya ke dvaara nirmit hote hai unhe ham metamaurfik khanij kehte hai| in khaneejo ko ham soochakaank khanij bhi kehte hai ji ki is prakaar hai-- silimenaait, kyaneete, stauralite, andaalausite aur kuchh gaarnet bhi shaamil hain.

ye khanij bhi metamaurfik shelo me paae jaate (olivines, paairaukseens, aaainfiboles, maaikaaj, feldaspaars aur kvaurtj,) hai par ye sabhi metamaurfism ki prakriya ke dvaara nahi bante ye sabhi khanij aagneya chattaanon me kristalijeshan prakriya ke dauraan bante hai|tatha in sabhi khaneejo par metamaurfism ki prakriya ka koi asar nahi hota (uchch daab aur adhik taapamaan) |metamaurfism ki vo prakriya jiske kaaran khanijo me badlaav aata hai use ऱaeeikristalijeshan kehte hai|

adhik daab aur taapamaan ki vajah se khaneejo paramaanuon aur aayanon me parivartan hone lagta hai jiske kaaran roopaantarit shail ka nirmaan hota hai aur is prakriya ko ऱaeeikristalijeshan ya metamaurfism kehte hai|

belabootedaar (foliyeshan) roopaantarit chattaan Norway

belabootedaar (foliyeshan)

kaayaantarit shail me part nirmaan hi belabootedaar (foliyeshan) kahalaata hai (laatin sabd fauliya se liya gaya jiska arth hota hai pattiya) aur yeh tab utpann hota hai jab koi chahattan ऱaeeikristalijeshan ke dauraan apni aksh ke samaantar chhoti rah jaati hai|jiski vajah se chahattane mud jaati hai aur unke modo par vibhinn prakaar ke rang utpann ho jaate hai jo ki un khaneejo ke rang hote hai jinki vajah se un modo ka nirmaan hota hai|banaavat ko belabootedaar aur gair - belabootedaar shreniyon mein vibhaajit kiya ja sakta hai|belabootedaar (foliyeshan) shail antar tanaav ka nateeja hai jiske kaaran shailon ik satah me aa jaati hai aur kabhi kabhi shailon me daraar bhi pad jaati hai |udaaharan ke liye, slet belabootedaar roopaantarit chattaan hai, ek prakaar ki sheest se utpann|gair belabootedaar shailon me plenar paitarn naheen hota hai.|vo chahattane jinke andar sabhi disaao se daab lagta hai vo belabootedaar (foliyeshan) prakat nahi karti aur vo chahattane me bhi belabootedaar (foliyeshan) nahi hota jinke andar kisi khanij ki kami hoti hai|enake (metamaurfism) andar ik aur kriyaavidhi hoti hai jiske anusaar bager taral avastha me aae chahattaano ke andar raasauynik prakriya ho jaati hai|

metamaurfism ke prakaar

  • kaaaintaikt metamaurfism - chahattaano ke andar megma ke sampark me aane se badlaav hota hai|is prikraya me sabse adhik badlaav chahattan ki baahari stah ko hota hai aur sabse kam sabse bheetari satah ko kyoki baahari stah poori tarah se megma ke sampark me hoti hai aur andar waali stah ka sampark sabse kam hota hai|
misseessippiyn sangamaramar big kottonavood kainiyn mein, vasatach pahaadon, yoota
  • kshetreeya metamaurfism

iske antargat chahattaano me badlaav daab aur adhik taapamaan ki vajah se hota hai aur is daab ki utpatti kisi chahattan ka bahut bhaari chahattan ke neeche hone se hoti hai|upar waali chahattan ka bhar neeche waali chahattan par padta hai aur isi vajah se uchch daab utpann hota hai|kabhi kabhi tektonik pleto ki takkaro se utpann daab aur taapamaan bhi is metamorfism ka kaaran banta hai|

kaayaantarit shail ke prakaar

  • sangamaramar
  • kvaartjaait
  • nees
  • sheest
  • faailaait[2]

sangamaramar

sangamaramar ik daanedaar metamaurfik chahattan hai yeh choona patthar ke ऱaeeikristalijeshan ke baad utpann hoti hai| sangamaramar kailshaait se bna hota hai (caco3) kuchh aur khanij jo sangamaramar me hote hai is prakaar hai

  • olivin
  • serapaantine
  • gaaranet
  • aaainfiboles

kvaartajaait

kvaartajaait ik daanedaar metamaurfik chahattan hai jo bahut uttam kvaaliti ke kvaurtj se bani hoti hai aur iske andar kvaurtj ke kan is prakaar se hote hai ki agar is par koi bhaari daab lgaya jaae to ye chhote chhote kaindo me bhikhr jaaega|yeh baluaa patthar ke ऱaeeikristalijeshan ke baad utpann hota hai|

nees

nees chahattane ghatak khaneejo ke alagaav ke kaaran bani parato se utpann hoti hai|yeh mukhtya kvaurtj va feldaspaar khanij se bani hoti hai|

sheest

is chahattan ke andar har praat (faayleshan) ek doosare ke smaantar hoti hai|aur ye chahattan maaikaaj khanijo ke kaaran banti hai| sheest chahattane do prakaar ka hoti hai

  • nimn dar ki sheest
  • uchch dar ka sheest

slet

slet bahut hi adhik daanedaar chahattane hoti hai iainki parate ik doosare ke samaantar hoti hai jiska kaaran inke bante sameya lga uchit dvaav hota hai ye mukhtya maaika, klaurit ki bani hoti hai|

yeh bhi dekhein

sandarbh

  1. Blatt, Harvey and Robert J. Tracy, Petrology, W.H.Freeman, 2nd ed., 1996, p.355 ISBN 0-7167-2438-3
  2. http://mowr.gov.in/index3.asp?sslid=816&subsublinkid=792&langid=2

baahari link