
vinnesheek shale

vinnesheek shale (vaastavaaniki vinnesheek loggerstat) anedi ayovaloni madhya ordovician (darrivillion-yugam) bhougolika nirmaanam. eee nirmaanam ayovaloni decora sameepamlo unna decora bilaniki parimitam cheyabadindi. 2005loe matrame kanugonabadinappatiki, vinnesheek shale ippatike daani silaajaala asaadhaaranamaina samrakshanaku prasiddhi chendindi. shale oka pratyaekamaina paryaavarana vyavasthanu samrakshistundi, vinnesheek biota, idhi united stateslo atyanta adbhutamaina ordovician loggerstatten. silaajaalalo atyanta puraatanamaina euripterid, "pentecopterus", alaage "ivovagnathus" mariyu "archaeognathus" vanti bhaarii konaadaantlu unnaayi.
bhoogarbha shaastram.
vinnesheek shale anedi muduru buudida rangu nundi aakupaccha-godhuma rangu isuka shale yokka sannani mariyu bhougolikamgaa sajaateeyamaina packagy. drill core dayta garishta mandam 38 meterlugaa anchanaa vesindi, ayithe chaalaa praantaalalo daani mandam 18-27 meterlu matrame. eee shale pyrite mariyu sendriya carbontho nindi untundi. idhi kevalam decora nirmaanamloo undhi, ayovaloni decara sameepamlo 5.6 kimmy (3.5 maillu) vedalpu gala sambhaavya prabhava bilam. bilam lopala, shale ekkuvagaa impact bresiato kuudina chaalaa mandamaina paerulaeni unit meeda untundi. bilam erpadina prabhavam shakopi erpade nikshepana tarvaata mariyu St nikshepanaku mundu sambhavinchindi. peater isukaraayi, aaa rendu nirmaanaala madhya vinnesheek shelnu brocket chestundi. seyint. peater isukaraayi vinnesheek shale nundi oka ananukuulata dwara vaeru cheyabadindi, idhi isukaraayi nikshepana samayaniki bilam nimpuloo ekkuva bhaagam ksheeninchindani suuchistumdi. eee lakshanam praarambhamlo gurtinchabadaledu, mariyu vinnesheek shale modata seyint yokka upa vibhagamga nammabadindi. peater isukaraayi.
boreholes kakunda, eguva ayova nadhi vembadi konni sannani avtkropla vadda matrame eee shale andubaatulo untundi. 2010loe nirminchina taatkaalika anakatta, shale yokka 4 meterla viramam nundi aneka silaajaala sekaranaku veelu kalpinchindi. silaajaalu pradhanamgaa biomineralized shellu ledhaa carbonatius filmlugaa samrakshinchabadataayi, ivi saadhaaranamgaa takkuva mruduvaina kanajaala samrakshanhatho kuudina kathinamaina bhaagaalanu suuchistaayi. ayinappatikee, konni "serasiocaris" namuunaalu phosphatised gut kantentlanu kaligi untaayi, mariyu mruduvaina bromalitelu apatite nirmanaluga samrakshinchabadataayi. shale yokka nikshepana vaataavaranam oka prasaantamaina samudra pareevaahaka praantam ledhaa nadeemukhamgaa oka anaxic, takkuva-ganta samudra mattamtho punarnirminchabadutundi.
vayassu mariyu chemostratigraphy.
vinnesheek shale kii radiometric dating ledhu mariyu sameepamloni nirmaanaalatoo ativyaapti chendutunna shilaja padaarthaalu takkuvagaa unnaayi, idhi khachitamaina vayassu anchanaalanu kashtataram chestundi. paina unna St. peater isukaraayi daani conodant jantujaalam aadhaaramgaa yugamlo chivari darrivillion. vinnesheek shale itara nirmaanaalatoo konni vargeekaranalanu matrame panchukuntundi, avi "multiistodus subdentus" mariyu "archaeognathus primus". eee rendu konadontlu modata missauri madhya nundi eguva-darivillion dutch town nirmaanam varaku prasiddhi chendaayi. mid-darivillion prapancha dasha uttara america biostratigraphy chivari viterokian praantiiya dasaku anugunamgaa untundi. ivovagnathus grandis" maadirigaane unna conodant padaartham kooda cyberia nundi telisindi.
vinnesheek shale yokka darrivillion yuganiki drill korla nundi pattika cheyabadina chemostratigraphy pokadala maddatu undhi. sendriya "δ" 13c viluvalu shale paiki velladamlo kramamga saanukuula dhorani undhi. idhi prapanchavyaaptamgaa gamaninchabadina chemostrategraphic sanghatana ayina mid-darivillion isotope carbon viharam (mdis) yokka diguva bhaagamtho sahasambandham kaligi undavacchu. medisku mundu diguva-darivillion pratikuula isotope carbon vihaarayaatra (eldinis) untundi, idhi decora prabhavam samayamlone sambhavinchi undavacchu. idhe vidhamaina pratikuula parytananu choopinche itara shilaja pradaesaalu sumaru 465-467 Ma vayassu kaligi untaayi. antekakunda, uttara america mariyu baltic samudram chuttoo aneka itara madhya-ordovician prabhava craters adhe samayamlo decora prabhavam sambhavinchi undavacchu. grahasakalam prabhavalu mariyu ulka samruddhi loe eee chinna perugudala, "ordovician ulka sanghatana", bahusha ell-condrite maatru grahasakalam vichchinnam kaaranamgaa sambhavinchindi. idhi goppa ordovician jeevavaividhyam sanghatana (gobe) thoo anusandhaaninchabadi undavacchu, idhi madhya-ordovician kaalamlo janthu vaividhyamlo pedda perugudala.
vinnesheek shalelo kanipinche medisku mariyu saanukuula vihaarayaatraku madhya sambandham prashninchabadindi. chinna sendriya carbon isotope vihaarayaatralu prapanchavyaaptamgaa jarige sanghatanala kante sthaanika paryaavarana ledhaa paryaavarana paristhitulachae prabhaavitamavutaayi. antekakunda, prati vyavadhilo aneka vihaarayaatralu jarugutaayi, kabatti vinnesheek rikaardu pratyaekamgaa medais mariyu eldinistoe sahasambandham kaligi undani anukovadaniki etuvanti kaaranam ledhu. decora prabhavam, prapanchavyaaptamgaa itara prabhavalu mariyu gob madhya sambandhaalu kooda khachitamaina vayassu anchanaalapai aadharapadatam kosam vimarsinchabaddaayi. medais mariyu vinnesheek vihaarayaatrala madhya paraspara sambandham gurinchi vimarsalu pratyaamnaaya vivaranalaku pora lopala pratyaksha aadharalu levane vaadanatoe pratighatinchabaddaayi. "pratyaksha biostratigraphic ativyaapti laenappatikee, vinnesheek shale yokka biostratigraphic anusandhaanaaniki maddatu ichhe madhya-darivillion silaajamgaa multiistodus subdentus pradarsinchabadindi, idhi saaruupya chemostratigraphy unna praantaalaku maddatu istundi.
paleobiota.
vinnesheek biota anie piluvabade vinnesheek shale yokka shilaja padaartham chaalaa ordovician shilaja pradaesaalatoe polchinappudu vilakshanamainadi. trilobites, echinoderms, brachiopods, bryozovans ledhaa pagadalu vanti benthic jantuvula (samudra mattamlo tama jeevitaalanu gadipevi) silaajaalu chaalaa takkuva. badulugaa, vinnesheek biota loe nectonic jantuvulu (ivi bahiranga neetilo eetha kodataayi) ledhaa nectobenthic jantuvulu (ivi samudra mattaniki daggaragaa eetha kodataayi) untaayi. atyanta saadhaarana janthu avasheshaalu conodant muulakaalu mariyu bromalitelu, ivi varusaga 50 saatam kante ekkuva mariyu 25 saatam kante ekkuva kolukunna silaajaalu. konni bromalitelalo conodant muulakaalu undevi, mariyu bromalitelu bahusha euripterids ledhaa pedda konodantla dwara tayaaru cheyabaddaayi. itara silaajaalalo cheliseretlu, bivalved crustatianlu, algay, linguloid brachiopods, oke gastropod namuunaa mariyu saayudha agnaathanlu (davada laeni chepalu) nundi thala kavachalu unnaayi.