
seox kwaartsait

minesota, southu dakota, ayowa ennivayude vibhajanathinu chuttumulla pradeshathu kaanapedunna oru proterosoic kwaartsaittaanu seox kwaartsait, ithu american aikyanaadukalude madhya padinjaaran, thekkupadinjaaran bhaagangaliludaneelamulla mattu paara unitukalumaayi bandhappettirikkunnu. neytha nadikalude nikshepangalaal roopappettathaanu ithu, athinte parasparabandhitha unitukal vadakke american krettaninte annathe thekkan bhaagathe nishkriya marjin ulkkollunna oru valia avashishta vejine nirvachikkumennu karuthappedunnu. manushyacharithrathil, samathala indiakkaar aachaaraparamaaya paippukal kothiyedukkaan upayogichirunna kaatlanait allengil paippeston ithu nalki. europiarude varavode, ithu nirmmaana kallinayi valareyadhikam khananam cheyyappedukayum thekkan dakottayile seox vellachaattathile niravadhi pramukha gadanakalil upayogikkukayum madhya padinjaarinu chuttumulla nirmmaana sthalangalilekku ayaykkukayum cheythu. 1978 januvari 5 nuu charitraparamaaya sthalangalude deseeya rajisttaril ulppeduthiya jasper stoon kambaniyilum kwaariyilum jasper, minnesottayil seox kwaartsait khananam cheyyappedukayum thudarunnu. jasper, minnesottayil school, pallikal, mattu niravadhi pothu, swakaarya gadanakal ennivayulppede noottaandile niravadhi kwaartsait kettidangal adangiyirikkunnu, avaa mikkavarum upekshikkappettu.
bhoomishaasthram.
seox kwaartsait chuvapp muthal pink vare niramulla proterosoic kwaartsaittaanu. thekkupadinjaaran minnesota, thekkukizhakkan, thekk-madhya thekkan dakota, vadakkupadinjaaran ayowa, vadakkukizhakkan nebrascayude oru cheria bhagam ennividangalil vilavedukkunna kattiyulla straattigraaphik unitaanithu (~ 3000 meter). viskonsiniludaneelamulla mattu manalkkall, kwaartsait unitukal (rib parvatham, baraboo, baaran, waterloo, flambue ennividangalil), thekkukizhakkan ayowa, thekkan nebrasca, vadakkan-madhya nyoo meksikoo, thekkukizhakkan-madhya arizona (oorttega, masatsal, deadman kwaartsait) ennivayumaayi ithu bandhappettirikkunnu.
vadakkupadinjaaran ayovayile oru raiyolaitinte euranium-ledu dettingil ninnu 2280 ± 110 Ma num, pipestonile seox kwaartsaittinte vaikalyathinte pottasyam-aargan theeyathi muthal 1120 Ma num idayilaanu athinte praayam. 1760 ± 10 maa vareyulla extrapolation correlative unitukal vazhi athinte praayam nannayi niyantrikkaan kazhiyum. 1640 ±40 emm. eiii. seox kwartsaittum athinte parasparabandhitha yoonittukalum nikshepikkappetta eee kaalaghattatthe baraboo edavela ennu vilikkunnu, athil uyarnna aapekshika samudranirappu vadakke amerikkayude valiyoru bhagam ulkkollunnu.
quarts arenait gadanayulla, mulappicha nadeethada nikshepangal upayogichaanu seox kwaartsait roopappettathu, paarayude 95 sathamaanavum vrithaakruthiyilullathum, nertthathum idatharavumaaya (0.125-0.5 mm) manal valippamulla quarts daanyangal kondaanu. nadikal thaarathamyena aazham kuranja charivil thekkukizhakkayi ozhukunnathaayi vishwasikkappedunnu. athinte adisthaana koottaayma uravidathinu kooduthal sameepamulla neytha aruvi nikshepangalaanennu karuthappedunnu, yoonittinte mukal bhaagath samudra swaadheenam undakaan saadhyathayund-eee vyaakhyaanathe visconsinile baaraaboovil athinte parasparabandhitha yoonittin mukalil samudra avashishtangalude (shellukalum banded irumbu roopeekaranangalum) thelivukal pinthunaykkunnu. koodaathe, eee yoonittil kaatlanait allengil paippston ennariyappedunna kaliman kallukalude ~ 1 meter kidakkakal adangiyirikkunnu, kaaranam eee kidakkakal pradeshathe thaddeshavaasikal pipe boulukal kothivaykkaan upayogichirunnu. seox kwartsaittum athinte parasparabandhitha yoonittukalum vadakke american kraattaninte annathe thekkan nishkriya marjin ulkkollunna orukaalathe vipulamaaya avashishta vejinte bhaagangalaanennu karuthappedunnu.
seox kwaartsait mannolippine angeyattam prathirodhikkunnu, koodaathe mikka phenerosoic samayathum oru topographic uyarnna roopathilaanu. paramavadhi samudranirappu kaalayalavil ithu phanerosoic kadalukalaal vellathinadiyilaayi, thudarnnulla mannolipp eee avashishta unitukale neekkam cheythu. ekkaaranathaal, seox kwartsaittinu mukalil irikkunna oreyoru bhoomishaasthra unitukal cretatius yugathilppettavayaan, vadakke amerikkayude valiyoru bhagam cretatius interior seaway kondu moodappettirikkumbol ithu nikshepikkappedunnu.
innathe seox kwaartsaittinte pala puranthallalukalum quaternary samayat glacial mannolipp moolam thurannukattappettu. ivayil chilath cosmogenic radionuclydeukalaaya beryllium-10, aluminium-26 ennivayumaayi bandhappettathaan, ithu laurentide aise sheett ethra kaalam munbu mukalile madhya padinjaaril ninnu pinvaangiyenn nirnnayikkunnu. kuranjathu 500,000 varshangalkk munbaanu thekkupadinjaaran minnesota avasaanamaayi himapalikalaal moodappettirunnathennu eee theeyathikal kaanikkunnu.
kettidangalil upayogikkuka.
seox kwaartsait upayogichu niravadhi maalikakalum mattu sradheyamaaya kettidangalum nirmmichittundu. ivayil ulppedunnu
orupakshe ettavum asaadhaaranamaaya nirmmaanatthil seox kwartsaittum petrified maravum ulppettirikkaam

