
louis shale

levis shale hii paschim united statesmadhil eka bhoogarbhiy rachana aahe. teey cretaceous kalavadhichya uttaradhatil campanion teey mastrictian tappyanparyantche jivashma jatan karate.
varnan.
levis shale hii eka olive-grey sagari shale aahe jyat chikanmaticha dagad, gaal, valukashma aanee chunkhadiche kahee patal thurr aahet. teey cretatiuschya uttaradhat pashchimekadil aateel samudramargat jamaa jhaale hote. bighorn khore, hiravya nadichya khore, powder nadee khore, sann juan khore aanee pawan nadichya khonyat nirmiti pike baher yetat. 
sann juan khonyat, khonyachya uttarekadil bhagat yaa rachanechi jaadi jastit jaast aahe, parantu khonyachya dakshin bhagat tee baher padate. haah pattikaritya khonyatiilaw sarvat unch sagari kavach aahe aanee kharaa kavach nasoon valukamay gaal aahe. nirmitichya varchya bhagat heurphanito bentonite bedd aahe, joou prushthbhagachya prushthbhagavar dirghkal olakhala jaato parantu alikadech nyu meksikochya rejinajaval pikato asey aadhalale. haah bedd varchya "baculites skotee" biostrategraphic zonmadhye aahe aanee tyache radiometric vay 75.76 ± 0.34 dashalaksh varshe aahe.
hiravya nadichya khonyat, rachana dekhil 600 meetarparyant jaad aahe aanee dadd valukashma sadasyadvare varchya aanee khalchya shale sadasyanmadhye vibhagali gelee aahe. dadd valukashma sadasyamadhye "hyperpychnites" heey gaal asatat, jeey nadichya tribhuj pradeshatil purachya panyane jamaa hotat jyamadhye itake gaal asatat qee teey sagari panyapeksha jaast daat asate aanee satatchya asvachchatechya pravahapramane vagate. heey pudhe jaananya kinarpattichya aadhi panbudichya pankha mhanoon levis shelchya jamaa honyashi susangat aahe.
jivashma.
jivashmanmadhye nirmiti tulanene qamee aahe. tathapi, yaa nirmitimadhye amonitesche jivashma "baculites clinolobates", "baculites esper" aanee "raibosera" aahet.
aarthik bhoogarbhshastra.
sann juan khonyatiilaw levis shale haah aitihasikdrushtya naisargik vayucha eka kirkol srot rahila aahe. tathapi, hydraulic fracturingdware yaa nirmitiche utpadan vadhavanyat rus vadhat aahe. 1990 purvi levis shelmadhye keval sola vihiri purn jhalya hotya, tarr 1997 paryant 101 hoon adhik vihiri purn jhalya hotya.
"jaleey fracture dravyanaivaji carbon dioxide aanee valucha vapar karoon hydraulic fracturecha eka prakar asalelya "dry frack" chee chachani sann juan khonyachya levis shelmadhye karnyat aalee aahe.
tapasacha itihas.
yaa rachanela charles whitman cross, aaa. yanni naav dile hote.see. spensor aanee see.doubleu. koloradochya phorta luisjavalil baherchya bhagansathi 1899 madhye purington.