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Kopernikivskij period period geologichnoyi istoriyi Misyacya sho nastav pislya eratosfenivskogo i trivaye doteper Buv vidilenij dlya poznachennya chasu utvorennya krateriv iz yaskravimi promenyami podibnih do kratera Kopernik Iz chasom taki promeni znikayut i tomu yih mayut lishe molodi krateri Inshih detalej poverhni protyagom periodu na Misyaci majzhe ne z yavilosya oskilki jogo nadra buli vzhe nadto holodni dlya masshtabnoyi geologichnoyi aktivnosti Krater Kopernik Vidno dobru zberezhenist harakternu dlya krateriv kopernikivskogo perioduPoverhnya Morya Doshiv peretyata promenyami Kopernika sam krater vidno na gorizonti Tiho krater kopernikivskogo periodu sho maye najviraznishu na Misyaci promenevu sistemuChitkij kraj kopernikivskogo kratera oznaka malogo viku Datuvannya pochatku periodu duzhe nepevne Ce pov yazane ne lishe z problematichnistyu viznachennya viku krateriv a j z tim sho v riznih vipadkah promeni znikayut iz riznoyu shvidkistyu Jmovirno nizhnyu mezhu periodu treba provoditi v intervali 1 25 2 2 mlrd rokiv tomu Shirokogo rozpovsyudzhennya nabuli ocinki 1 1 ta 2 1 mlrd rokiv tomu Ye pidstavi provoditi cyu mezhu na vidmitci 0 75 mlrd rokiv tomu trivalist potmyaninnya porid pid diyeyu viprominyuvannya i v takomu vipadku vik kratera Kopernik ne bude kopernikivskim Vtim ye dani sho zgadana trivalist mozhe variyuvati v mezhah 0 25 2 3 mlrd rokiv a chas isnuvannya promeniv she silnishe Vidilennya cogo periodu zaproponuvali v 1962 roci Yudzhin Shumejker ta Robert Hakman zasnovniki suchasnogo podilu istoriyi Misyacya na periodi Viznachennya nizhnoyi mezhiKopernikivskij period zazvichaj viznachayut yak chas utvorennya krateriv yaskravi promeni yakih zbereglisya doteper Odnak po pershe vik krateriv viznachiti vazhko a po druge yaskravist promeniv zalezhit ne lishe vid viku kratera a j vid skladu jogo vikidiv ta pidstilayuchoyi poverhni Promeni krateriv utvoreni chastkovo vikinutoyu z nih rechovinoyu a chastkovo miscevim gruntom z nevelikoyi glibini sho opinivsya na poverhni pri padinni ciyeyi rechovini napriklad vikidami vtorinnih krateriv Grunt iz glibini spochatku svitlishij za poverhnevij a z chasom tmyanishaye pid diyeyu sonyachnogo vitru ta kosmichnih promeniv Okrim togo promeni znishuyut naslidki meteoritnogo bombarduvannya peremishuchi regolit Yaksho promin utvorenij vikidami togo zh skladu sho poverhnya pid nim to vin znikne vidnosno shvidko Yaksho zh vin utvorenij svitlimi materikovimi porodami vikinutimi na temnu morsku poverhnyu kosmichne viprominyuvannya ne zdatne ostatochno jogo znishiti Vin mozhe zniknuti lishe vid meteoritnogo bombarduvannya sho zajmaye bilshe chasu za deyakimi ocinkami gt 3 mlrd rokiv Hocha kopernikivskij period nazvano za im yam kratera Kopernik jogo pochatok ne priv yazanij do utvorennya cogo kratera Sered promenyastih krateriv Kopernik ye vidnosno starim jogo promeni ne duzhe yaskravi ale ne najstarshim Vik Kopernika ocinyuyut priblizno u 800 mln rokiv cya cifra otrimana z doslidzhen zrazkiv porid pohodzhennya yakih shopravda ne zovsim vpevneno pov yazuyut z udarom sho stvoriv cej krater Bilsh davnimi promenyastimi kraterami ye ta Avtolik Dlya zrazkiv porid yaki jmovirno nalezhat do vikidiv cih krateriv otrimano znachennya viku 1 3 ta 2 1 mlrd rokiv vidpovidno Za deyakimi ocinkami Avtolik odin iz najstarshih krateriv iz promenyami i ce stalo osnovoyu dlya propoziciyi vvazhati chas jogo utvorennya pochatkom cogo periodu Za inshimi danimi isnuyut i she starshi promenyasti krateri blizko 3 mlrd rokiv Okrim togo deyaki doslidzhennya vkazuyut na te sho promeni Avtolika ta Aristilla vzhe dosyagli optichnoyi zrilosti ne zdatni dali tmyaniti pid diyeyu viprominyuvannya i takim chinom te sho voni zbereglisya doteper rezultat ne stilki molodosti cih krateriv skilki yih utvorennya u svitlih porodah Nazvani problemi viznachennya pochatku periodu prizveli do propoziciyi zasnovuvati jogo viznachennya ne na yaskravosti promeniv a na optichnij zrilosti poverhni Cej variant tezh pov yazanij z deyakimi trudnoshami zokrema z tim sho chas dosyagnennya ciyeyi zrilosti vidomij z nizkoyu tochnistyu Odnak vidmicheno sho vikidi Kopernika majzhe zrili i otzhe cej chas nenabagato bilshij za jogo vik sho stanovit 0 8 mlrd rokiv Za inshimi danimi ci vikidi vzhe zovsim zrili a zgadanij chas menshij za vik kratera i stanovit 0 75 mlrd rokiv U takomu vipadku kopernikivskij period pochavsya vzhe pislya utvorennya Kopernika Vtim ye dani sho chas dosyagnennya optichnoyi zrilosti variyuye duzhe silno za cimi danimi vin zalezhit vid himichnogo skladu gruntu i dlya porid moriv stanovit blizko 0 25 mlrd rokiv a dlya porid visochin 2 3 mlrd Identifikaciya ob yektiv kopernikivskogo vikuInfrachervonij znimok Misyacya pid chas zatemnennya Molodi krateri viglyadayut yaskravimi tochkami stari ne pomitni Najyaskravishij krater Tiho Golovna oznaka za yakoyu misyachni krateri zazvichaj vidnosyat do kopernikivskih nayavnist yaskravih promeniv Okrim togo ci krateri dobre zberezheni yih krayi duzhe chitki todi yak u starih krateriv voni zgladzheni ta zrujnovani meteoritnim bombarduvannyam sho prizvodit zokrema do zmenshennya glibini Veliki krateri eratosfenivskogo periodu zazvichaj tezh dobre zberezheni ale vzhe ne mayut promeniv Vazhlivij sposib viznachennya viku detalej poverhni nebesnih til zasnovanij na pidrahunku krateriv sho nakopichilisya na cih detalyah za chas yih isnuvannya Koncentraciya krateriv diametrom 1 km na dilyankah kopernikivskogo viku stanovit lt 750 sht mln km2 dlya poverhni moriv ta lt 1000 sht mln km2 dlya poverhni krateriv Okrim togo vik krateriv mozhna ociniti za infrachervonimi sposterezhennyami pid chas misyachnogo zatemnennya poverhnya molodih krateriv oholodzhuyetsya povilnishe nizh inshi dilyanki i ci krateri lishayutsya garyachimi tochkami Ce naslidok togo sho tam she nema tovstogo sucilnogo teploizolyuyuchogo sharu dribnih ulamkiv Tak krater Tiho pid chas zatemnen prinajmni na 50 teplishij za okolici Dlya eratosfenivskih krateriv cej efekt znachno menshij Stupin podribnenosti rechovini sho vkrivaye krater mozhna viznachati i za radiolokacijnimi danimi Ob yekti sho utvorilisya protyagom perioduU kopernikivskomu periodi misyachnij landshaft zminyuvavsya malo Detali relyefu sho todi z yavilisya zajmayut lishe kilka vidsotkiv misyachnoyi poverhni Ce v pershu chergu krateri vid udariv kosmichnih til Nadra Misyacya buli vzhe nadto holodni dlya intensivnoyi geologichnoyi aktivnosti j utvorennya moriv u comu periodi majzhe pripinilosya Duzhe malo bulo j proyaviv tektonichnih procesiv Odnak vidomo bilshe desyatka morskih dilyanok yaki sudyachi z nizkoyi koncentraciyi krateriv mogli z yavitisya same todi Mozhlivo takij vik mayut i deyaki vulkanichni krateri napriklad u krateri Shredinger Do tektonichnih ob yektiv kopernikivskih chasiv nalezhat dribni grabeni i mozhlivo deyaki gryadi ta lopatepodibni ustupi U comu zh periodi utvorilisya taki yak Ina svoyeridni ob yekti nevidomogo pohodzhennya Do najbilshih krateriv kopernikivskogo periodu nalezhat sam Kopernik Tiho Stevin Cukki Karpenter Filolaj Hajn na vidimomu boci Misyacya ta Sharonov O Dej Dzhekson Vavilov ta Robertson na zvorotnomu Kopernikivskimi ye vsi misyachni krateri diametrom do 50 m bo starshi krateri takih rozmiriv uzhe zrujnovani Karta detalej misyachnoyi poverhni sho utvorilisya v kopernikivskomu periodi D Vilgelms Geologichna sluzhba SShA 1987 Chorne krateri zhovte yih vikidi chervone morya Vidimij bik Zvorotnij bikPrimitkiChikmachev V I Glava 3 13 Tiho i ego okrestnosti Puteshestviya k Lune Red sost V G Surdin Moskva Fizmatlit 2009 S 166 175 ISBN 978 5 9221 1105 8 Tanaka K L Hartmann W K Chapter 15 The Planetary Time Scale The Geologic Time Scale F M Gradstein J G Ogg M D Schmitz G M Ogg Elsevier Science Limited 2012 P 275 298 ISBN 978 0 444 59425 9 DOI 10 1016 B978 0 444 59425 9 00015 9 Wilhelms D Chapter 13 Copernican System 1 1987 United States Geological Survey Professional Paper 1348 z dzherela 14 travnya 2013 Wilhelms D Chapter 14 Summary 2 1987 P 280 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lyutogo 2015 Procitovano 4 lyutogo 2015
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