
maadisan group

padinjaaran american aikyanaadukalile paarakkettukalulla parvathapradeshangalilum valia samathalapradeshangalilum mississippiyan kaalaghattatthile carbonate paarakalude kattiyulla sreniyaanu maadisan chunnaambukallu. parakal oru pradhana jalasambharaniyaayum chila sthalangalil enna sambharaniyaayum pravartthikkunnu. madison athinte thulyamaaya stharangalum padinjaaran thekkan dakottayile karutha kunnukal muthal padinjaaran mondaana, kizhakkan idaho vareyum canada-yunaittad stetts athirthi muthal padinjaaran collado, graant kaanyan oof arizona vareyum vyaapichukidakkunnu.
praayavum naamakaranavum.
maadisan group ennaanu maadisan audyogikamaayi ariyappedunnathu. mondaanayil, athinte kanam athunna sthalathu, groupine mission malayidukku roopeekaranamaayum lodjpol roopeekaranamaayum vibhajichirikkunnu. karutha kunnukalile pahasappa chunnaambukallu, ledville chunnaambukallu (colorado), gwensi chunnaambukallu (vyoming), grand malayidukkile redu vaal chunnaambukallu ennivayaanu madisoninu thulyamaaya perukal. maadisan grouppinte mukal bhagam, vadakkan dakotta vadakkan mondaanayudeyum uparithalathile chaals roopeekaranam, saadhaaranayaayi nirvachichirikkunnathupo maadisan chunnaambukallinu thulyamalla.
maadisan chunnaambukallukalil bhooribhaagavum ekadesham 359 muthal 326 dasalaksham varshangalkk munbu mississippiyan kaalatthinte aadyakaalam muthal madhyakalam vare (tournaisian muthal visiyan gattangal vare) nikshepichirunnu. kinderhookian, osagian, meramatian ghattangalil maadisan sthaapikkappettathaayi pazhaya vadakke american upayogam pattikappedutthunnu.
maadisan chunnaambukallu" enna padam aadyamaayi peel (1893) upayogichappol oru tharam pradeshamo perinte uthbhavamo nirddeshichittilla, ennaal yadhaartha srishti moonnu forkkukalude visthruthiyil shradha kendreekarichathinaal, eee peru maadisan nadiyile mondaanayile puramthallalukalumaayi bandhappettirikkam. gibson reservoirude vadakku bhaagath seey/4 secondil oru reference sekshan nirddeshichittundu. 36, tii. 22 enn., aarr. 10 vaatt., patricks basin kwad, tettan qoo., mondaana.
litholaji.
chunnaambukallukalum dolomiteukalum madisonil aadhipathyam pulartthunnu. paara valare layikkunnathinaal, ithu palappozhum guhakalum kaarst bhooprakrithiyum vikasippikkunnu. madisonil vikasippichedutha oru guhayude udaaharanamaanu levis aandu clark guhakalaaya mondaana. maadisanile sambannamaaya phoosil parakal soochippikkunna aazham kuranja samudra pashchaathalatthilaanu parakal nikshepichathu. villisttan thadatthil, oolaitt sholukal vikasippikkaan mathiyaya aazham kuranja vellamaayirunnu; avaa pinneedu ennayude sambharanikalayi maari. 
missouri nadiyude theerathulla parvathangalude kavaadangalile chaaraniratthilulla paarakkettukalaaya mondaana maadisan chunnaambukallaanu roopappedunnathu.
upavibhagangal.
mondaana, vyoming, manittoba ennividangalil mukalil ninnu adithattu vare inipparayunna roopangal amgeekarikkappedunnu
thaazhepparayunna upavibhagangal (formation raankinte) suscatchevanil mukalil ninnu adithara vare amgeekarikkappettirikkunnu