aroyo ojitto roopeekaranam

nyoo meksikkoyile albukarkkinu sameepam thurannukattappetta oru mayoseen geological roopeekaranamaanu aroyo ojitto roopeekaranam. rioo grande thadatthiloode rioo grande poornnamaayum samyojippichathin sesham rioo grande villalinte albookerk thadatthil avashishtangal nikshepichathaayi ithu rekhappeduthunnu.
vivaranam.
siyera naasimiyento, saan juvan thadam, thekkukizhakkan colarado peedabhoomi enniva ozhukunna aruvikalil ninnu nikshepikkunna avashishtangal chernnathaanu aroyo ojitto roopeekaranam. iva kooduthalum mithamaayatho moshamaayi tharamthirichatho aaya arcosic manalkkall, madstoon, complomate ennivayaanu. mukalile kidakkakal parukkan kooduthal moshamaayi krameekarichathumaanu. sero konejo roopeekaranathilaanu eee roopeekaranam sthithicheyyunnathu, koodaathe seja roopeekaranam ithu kramarahithamayi marikadakkunnu. aroyo ojittoyude motham kanam ekadesham aanu.
eee roopeekaranathe navajo drow, loma baarban, pikuda peak memper (aarohana straattigraaphik kramatthil) enningane thirichirikkunnu. thekk kizhakode ozhukunna niravadhi nadikal nikshepikkunna chila samyojitha lensukalum chelikkallukalum ulla ilam thavitt muthal ilam manja manalkkall vare navajo drow amgathil adangiyirikkunnu. yoonittil 8.11 ± 0.05 dasalaksham varsham (maa) praayamulla oru bassault ozhukkum rioo puerco thaazhvarayile oru agniparvvatha ventum (sero colorado) navajo droikkullil athinte aditharayulla aarr-aarr praayam 7.1 ± 0.40 maa aanu.
loma baarban amgathinu navajo droick samaanamaanengilum ithu kooduthal moshamaayi tharamthirikkappedukayum idaykkide mankallukal adangukayum cheiyunnu. bearhead raiyolaitile peralta tuff amgathinu samaanamaayi 6.8 muthal 7.1 maa vare praayamulla agniparvvatha tefra ithil adangiyirikkunnu. navajo drow amgavumaayulla praayatthile saamyam rund amgangalude interfingerine soochippikkunnu.
pikuda kodumudiyile amgangalil bhooribhaagavum chuvanna manal kalarnnathum arcosic manalkkallumaan. munbu seja roopeekaranathinu niyogichirunna kidakkakal ithil adangiyirikkunnu, ennaal ippol avaa ringons paleosurfacinu thaazheyaanennu ariyappedunnu, ithu oru pradhana praadeshika anuroopathayalla. pikuda kodumudikkaduthulla complomate eksposharukalude perilaanu ithu ariyappedunnathu. eee amgam kanathil ninnu vyathyasthamaan. eee amgam adisthaana loma baarban amgathekkaal parukkanaan, athinte sanbarkkam kizhakode kramarahithamaakunnu.
anweshanathinte charithram.
1937ll kirk bryan franklin mccan chernnu santa phee roopeekaranathinte "madhya chuvanna amgatthinte" mukal bhaagath yoonittin nalkia kidakkakal ulppeduthiyirunnu. 1999ll connell coinvestigettarukalum chernnaanu eee yoonittine aadyamaayi nirvachichathu. ithine type lokkeshan ennum namakaranam cheythu (type sekshan nirvachichittilla). navajo drow, loma baarban, seja amgangal enningane roopeekaranam vibhajichu. yadhaarthathil nirvachichathupole, (upekshikkappetta) paandadiliyon roopeekaranathinu niyogichittulla kwaattenari kidakkakal ozhike, annu nirvachichathupole vadakkupadinjaaran albookerk thadatthile siya roopeekaranathekkaal cheruppamulla ellah stharangalum eee roopeekaranathil ulppedunnu. sero konejo siya roopeekaranathil ninnu verthirikkunna kaaryamaaya poruthakkedu (1 muthal 1.6 emm. eiii vare avashishta nikshepanatthile edavelaykku anusrithamaayi) ullathinaal siya roopeekaranathile sero konejo amgathe aroyo ojittoyilekku maattaan tedford bargoon shupaarsha cheythu.
2007-ll viliams kolum aroyo ojitto roopeekaranam upekshikkaan shupaarsha cheythu, kaaranam eee peru kramarahithamayi upayogikkunnu, kaaranam eee roopeekaranam ringons paleosurface ennu perittathinushesham oru pradhana pradeshathe anuroopathayillaayma vyapippichu. avar ringons paleosurfacinu mukalilulla seja amgathe formation rankilekku sthaanakkayattam nalkukayum santa phee grouppinte aadyakaala upavibhaagangale oormmippichukondu aroyo ojittoyile bakkiyulla amgangale anoupachaarika "madhya chuvapp" formationilekku maattukayum cheythu. adutha varsham seja roopeekaranam (athine addeham santa anaa messa, atrisco amgangal enningane vibhajichu) prothsaahippikkunnathi yojichukondu conell prathikarichu, sero konejo roopeekarana rankilekku prolsaahippikkukayum madhyabhaagathe aroyo ojittoyaayi nilanirthukayum cheythu, navajo drow, loma baarban, pikuda peak amgangal enningane vibhajichu.

