
24-isopropylcolsteyn

prathyeka sponchukal, prottistukal, samudra aalgakal enniva ulppaadippikkunna oru jaiva thanmathrayaanu 24-isopropyl collustain. neoproterosoic paarakalil eee thanmatra uyarnna samriddhiyil thirichariyunnathu cambrian spodanasamayathu jeevante druthagathiyilulla vaividhyavalkkaranathinum vikiranathinum munbulla multisellular jeevante saannidhyam prathifalippikkunnuvennu vyaakhyaanikkappettindu. eee parivartthana kaalaghattatthil phenerosoic, ekakosha jeevikalude thudakkathil innu bhoomiyil nilavilulla pala parinaama vamshaavalikalum srishtikkunnathinaayi parinamichu. purathana paarakalile 24-isopropyl collustain eee drutha vaividhyavalkkarana sambhavathin munbulla sponchukalude saannidhyathe soochippikkunnuvennu vyaakhyaanikkunnath multisellular jeevithathinte parinaamathekkurichum jeevashaasthrathinte samyojanathekkurichum ulla parambaraagatha daaranaye end-neoproterosoic kaalaavasthayile maattangalilekku maattunnu. ennirunnaalum, samudra aalgakalude parigananakaleyum bhoomishaasthraparamaaya samayathinullil jaiva thanmaathrakalude maattathe adisthaanamaakki 24-isopropyl kolasteynine sponchukalumaayi bandhippikkunnathirethi niravadhi vaadangalundu. prathyekichu raiseriyan prottistukalil 24-isopropyl collustain kandethiyathukondu soochippikkunnathu eee biomarker sponchukal kandethaan svanthamaayi upayogikkaan kazhiyillennu. proterosoic-phenerosoic parivartthanatthil maarikkondirikkunna aagola jaiva bhooraasaayanika chakrangalude pashchaathalatthil 24-isopropyl kolasteyninte saannidhyam vyaakhyaanikkunnath sajeevamaaya gaveshana mekhalayaayi thudarunnu.
24-isopropyl collustain.
precambrian sponchukalkkulla raasa vaadangal.
24-isopropyl collustain (chithram 1, idathu) sii30eiiichhch54 enna raasa soothravaakyavum molecular maas 414.76 jii/molum ulla oru sii30 stireynaanu. eee thanmaathraykk sii 24 ll isopropyl bhaagamulla oru collustain asthikoodamundu, ithu 24-isopropyl collustrollinte bhoomishaasthraparamaayi sthirathayulla roopamaanu. bandhappettathum pradhaanappettathumaaya oru thanmatra 24-enn-propyl collustain aanu (chithram 1, valath), collustain asthikoodathodoppam, ennaal sii 24 ll enn-propyl bhagam undu.
failam poriferaykkullil demosponchia classile oru prathyeka koottam sponchukalaanu 24-isopropyl collustain dhaaraalamaayi uthppaadippikkunnathu. mattu tanmatra phosilukaleppole, paarakalil 24-isopropyl kolasteyninte saannidhyam demosponch paarayude nikshepa anthareekshathilo athinadutho vasikkunnundo ennu soochippikkaam. 24-isopropyl kolasteyninte uyarnna samriddhikal omaanile hoofk supergroupil ninnu precambrian paarakalil kandethiyittundu, ithu cambrian spodanathinu munbulla sponchukalude saannidhyathe soochippikkunnu. ennirunnaalum, 24-isopropyl collustain uthppaadippikkunna oreyoru jeevikal sponchukal mathramalla, athinaal eee biomarkerinte thirichariyal demosponchinte saannidhyavumaayi savisheshamaayi bandhappettirikkunnil.
samudra pelagophite aalgakal pradhaanamaayum 24-enn-propylcolastain uthppaadippikkumbol, avaa 24-isopropyl collustain uthppaadippikkukayum cheiyunnu. paarakalumayulla 24-isopropyl kolasteyninte rund saadhyamaaya uravidangalaaya demosponch, aalgakal enniva 24-isopropyl collustain, 24-enn-propyl collustain ennivayude anupatham kanakkileduthu verthirikkaam. pala paarakalilum eee anupatham 0.2-0.3 aanu. ennirunnaalum, omaanil ninnulla paarakalil, steraanukalude anupatham 0.52-16.1 aanu, sharashari moolyam 1.51 aanu, ithu sponch jaivavasthukkalude inputtine shakthamayi soochippikkunnu. cambrian samayat eee uyarnna moolyangal aprathyakshamaakukayum 24-isopropyl kolasteynum 24-enn-propyl kolasteynum thammilulla anupatham proterosoic-phenerosoic parivarthanatthinaayi praaya-nirddishta proxy upayogikkukayum cheiyunnu.
molecular klokkukalile sameepakaala gaveshanangal 24-isopropyl collustroll uthppaadippikkaanulla kazhivu demosponchilum aalgakalilum swathanthramaayi vikasichathayi vaadikkunnu. ennirunnaalum, neoproterosoic samayat sponchukalil biosynthesis neratthe vikasichathaayum phenerosoic vare aalgakalil biosynthesis nadathaanulla kazhivu undaayirunnillennum thonnunnu. shariyaanenkil, eee phalangal purathana paarakalile 24-isoprophyl kolasteyninte uyarnna alavu sponchukalude saannidhyathe prathifalippikkunnuvennu vyaakhyaanikkunnathil shaasthranjarkku kooduthal aathmavishwaasam nalkum.
precambrian sponchukalude nireekshanangal.
cambrian spodanathinu munbulla sponch parinaamatthinte adhika thelivukal thekkan austreliyayil ninnulla bioclastic paaykkstonukalil ninnu kandethiyittundu. aavarthichulla grindingiloodeyum photographyiloodeyum gaveshakar eee paaraykkullil adangiyirikkunna ~ 1 milleemettar vyaasamulla parasparabandhitha chaanalukalulla asamamaya gadanakalude 3D modalukal nirmmichu. tonnelukalude sankeernamaaya shringhala fangasukalumaayo aalgakalumaayo poruthappedunnillenna thonnunnu, avaa aadima sponchukalaanennu gaveshakar thaalkkaalikamaayi abhiprayappettu. eee vyaakhyaanam vivaadaparamaanu, kaaranam mattu sponch fosilukalude aadya roopeekaranathinu munbulla gadanakalum gadanakalum orotta avashishta shreniyil maathrame sambhavikkunnulloo.
prathyaaghaathangal.
snehikkumbol "thudangiyava."(2009) marinovan cap carbonatinu thaazheyulla paarakalil ~ 635 ema (dasalakshakkanakkinu varshangalkk munbu) enna thothil sponchukalude saannidhyam undennu vaadikkunna antcliffe (2013) biomarker vahikkunna paarayude praayam 645 emaikkum ~ 580 emaikkum edayilaanennu kanakkakkunnu. ettavum aduthide, svarnnam "thudangiyava."(2016) 24-isoproyilkolsteyn adangiya paarakalude praayam ~ 650 Ma num 540 Ma num edayilaanennu ezhuthunnu. ellah saahacharyangalilum, 24-isoproyilkolsteyn adangiya paarakalude praayam ~ 541 ema cambrian spodanathinu mumbullathaanennu kanakkukal sammathikkunnu.
~ 540 emaic munbulla sponchukalude saannidhyam multisellular jeevikalude parinaamatthilum biosphere neoproterosoic kaalaavasthayumaayi bandhippikkunnathilum aazhathilulla prathyaaghaathangal undaakkunnu. cambrian spodanathinu munbulla kalavastha vyathiyaanavum thudarnnulla jeevajaalangalude vaividyavalkkaranavum snoball erthu episodukalude kaaranagal, banded irumbu roopeekaranangalude nikshepam, anthareeksha ooksijante uyarchayude randaam ghattam enniva manasilakkunnathumaayi sankeernamaayi bandhappettirikkunnu. prathyekichum, sponchukalude saannidhyam neoproterosoic kaalaghattatthinte avasaanathil samudrangalil ettavum kuranja ooo 2 ulladakkam layikkunnathinekkurichum euxynic canfield samudrathil ninnu aadhunika ooksijan adangiya aazhathilulla samudrathilekkulla parivarthanathekkurichum chodyangal uyarthunnu. ennirunnaalum, sponchukalkku athijeevikkaan valare kurachu oo 2 aavasyamaanennu thonnunnu, athinaal precambrianil avayude saannidhyam proterosoic oo 2 alavil sakthamaaya niyanthranangal nalkilla.
munnariyippukal.
24-isopropyl collustain demosponchinte biomarkeraayi vyaakhyaanikkunnathire niravadhi yukthikalundu

