{"id":33632,"date":"2019-04-01T05:34:37","date_gmt":"2019-04-01T02:34:37","guid":{"rendered":"https:\/\/bilimvegelecek.com.tr\/?p=33632"},"modified":"2019-04-15T06:07:00","modified_gmt":"2019-04-15T03:07:00","slug":"66-milyon-yil-oncesinden-bir-enstantane","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2019\/04\/01\/66-milyon-yil-oncesinden-bir-enstantane","title":{"rendered":"66 milyon y\u0131l \u00f6ncesinden bir enstantane"},"content":{"rendered":"

Sonun ba\u015flang\u0131c\u0131 bug\u00fcn Kuzey Dakota olarak bilinen b\u00f6lgedeki i\u00e7 denizin sular\u0131n\u0131 dev dalgalar halinde kabartan \u015fiddetli bir sars\u0131nt\u0131yla kendini g\u00f6sterdi. Ard\u0131ndan, sfer\u00fcl denen minik cam taneleri g\u00f6ky\u00fcz\u00fcnden ya\u011fan sa\u00e7malar gibi topra\u011f\u0131 d\u00f6vmeye ba\u015flad\u0131. Bu cam ya\u011fmuru \u00f6ylesine \u015fiddetliydi ki karay\u0131 kaplayan bitki \u00f6rt\u00fcs\u00fcn\u00fc ate\u015fe verdi. Sulardaki bal\u0131klar, solunga\u00e7lar\u0131n\u0131 t\u0131kayan cam taneleri y\u00fcz\u00fcnden nefes alamaz oldular. Y\u00fckselen sular 10 metre y\u00fcksekli\u011finde sudan bir duvar olu\u015fturup nehirlerin a\u011fz\u0131na vard\u0131\u011f\u0131nda y\u00fczlerce tatl\u0131 su bal\u0131\u011f\u0131 kumdan k\u0131y\u0131lara savruldu ve suyun ak\u0131\u015f\u0131 ge\u00e7ici s\u00fcreli\u011fine tersine d\u00f6nd\u00fc. Sular\u0131n \u00e7ekilmesiyle karaya vuran bal\u0131klar \u00e7ap\u0131 be\u015f milimetreyi bulan cam tanelerinin ya\u011fmuru alt\u0131nda ezilirken kimi de kendini bal\u00e7\u0131\u011f\u0131n i\u00e7ine g\u00f6mebildi\u011fi kadar g\u00f6md\u00fc. \u0130nce bir kum gibi tepelerine ya\u011fan ta\u015f ve cam ya\u011fmuru 10 ila 20 dakika daha devam ettikten sonra bunu k\u0131y\u0131lar\u0131 sular alt\u0131nda b\u0131rakan ikinci bir dalga izledi. Bal\u0131klar bu defa \u00e7ak\u0131l, kum ve ince tortudan olu\u015fmu\u015f bir tabakayla 66 milyon y\u0131l boyunca m\u00fch\u00fcrlenecek \u015fekilde kapland\u0131lar.
\n<\/span>Birbiri \u00fczerine y\u0131\u011f\u0131lm\u0131\u015f bal\u0131klar, kavrulmu\u015f a\u011fa\u00e7 g\u00f6vdeleri, kozalak dallar\u0131, \u00f6l\u00fc memeliler, mozazor kemikleri, b\u00f6cekler, bir <\/span>Triceratops<\/span><\/i> g\u00f6vdesi, ammonit denen salyangoz benzeri deniz kafadanbacakl\u0131lar\u0131 ve dinoflagellal\u0131lar olarak adland\u0131r\u0131lan deniz mikroorganizmalar\u0131ndan olu\u015fan bu harman, paleontolog Robert DePalma taraf\u0131ndan, Kuzey Dakota\u2019daki Hell Creek Olu\u015fumu\u2019nda ge\u00e7irdi\u011fi alt\u0131 y\u0131l\u0131n sonunda g\u00fcn y\u00fcz\u00fcne \u00e7\u0131kar\u0131ld\u0131. S\u00f6z konusu ke\u015fif, DePalma\u2019n\u0131n akl\u0131n\u0131 2013 yaz\u0131nda ger\u00e7ekle\u015ftirdi\u011fi kaz\u0131dan bu yana kurcalayan bir d\u00fc\u015f\u00fcnceyi do\u011frulam\u0131\u015f oldu. Buna g\u00f6re DePalma karada ya\u015fayan dinozorlar\u0131n sonunu getiren g\u00f6kta\u015f\u0131 \u00e7arpmas\u0131ndan hemen sonra topra\u011f\u0131 kaplayan bir ceset y\u0131\u011f\u0131n\u0131n bir yerlerde g\u00f6m\u00fcl\u00fc olmas\u0131 gerekti\u011fini d\u00fc\u015f\u00fcnm\u00fc\u015ft\u00fc. Kretas \u00c7a\u011f\u0131\u2019n\u0131n sonuna tekab\u00fcl eden ve K-T s\u0131n\u0131r\u0131 ad\u0131 verilen bu \u00e7arpman\u0131n D\u00fcnya \u00fczerindeki ya\u015fam\u0131n %75\u2019inin sonunu getirdi\u011fi d\u00fc\u015f\u00fcn\u00fcl\u00fcyor.
\n<\/span>\u201cK-T s\u0131n\u0131r\u0131 ile ba\u011flant\u0131l\u0131 oldu\u011fu tespit edilmi\u015f, ilk toplu k\u0131y\u0131m kurban\u0131 b\u00fcy\u00fck organizmalar k\u00fcmesiyle kar\u015f\u0131 kar\u015f\u0131yay\u0131z\u201d diyor Florida Do\u011fa Tarihi M\u00fczesi\u2019nin paleontoloji k\u00fcrat\u00f6r\u00fc DePalma, ve ekliyor: \u201cD\u00fcnya\u2019n\u0131n K-T s\u0131n\u0131r\u0131yla ili\u015fkili kesitlerinden hi\u00e7birinde, farkl\u0131 ya\u015flarda ve hayatlar\u0131n\u0131n farkl\u0131 evrelerinde olup da ayn\u0131 g\u00fcn, ayn\u0131 anda \u00f6lm\u00fc\u015f bu kadar fazla say\u0131da t\u00fcr\u00fcn bir arada g\u00f6r\u00fclebilece\u011fi bir tabloya rastlanmam\u0131\u015ft\u0131r.\u201d
\n<\/span>Gelecek hafta <\/span>Proceedings of the National Academy of Sciences <\/span><\/i>dergisinde yay\u0131mlanacak olan makalede DePalma ile ABD ve Avrupa\u2019dan jeolog meslekta\u015flar\u0131, hem Tanis ad\u0131 verilen bu b\u00f6lgenin ayr\u0131nt\u0131l\u0131 tasvirini sunacak, hem de buray\u0131 Meksiko\u2019daki Yukatan Yar\u0131madas\u0131\u2019nda 66 milyon y\u0131l \u00f6nce meydana gelen g\u00f6kta\u015f\u0131 \u00e7arpmas\u0131na ba\u011flayan kan\u0131tlardan bahsedecekler. Yukatan\u2019daki \u00e7arpma arkas\u0131nda Chicxulub ad\u0131 verilen ve okyanus taban\u0131nda bulunan devasa bir krater b\u0131rakm\u0131\u015f, erimi\u015f kayalar ve g\u00f6kta\u015f\u0131 tozlar\u0131n\u0131n olu\u015fturdu\u011fu kilometreler uzunlu\u011fundaki \u015feritler atmosfer boyunca yay\u0131lm\u0131\u015ft\u0131. Nihayetinde D\u00fcnya\u2019y\u0131 ku\u015fatan bu toz bulutu yery\u00fcz\u00fcndeki son kitlesel yokolu\u015fu ba\u015flatt\u0131.
\n<\/span>Berkeley \u00dcniversitesi yery\u00fcz\u00fc ve gezegen bilimlerinden emekli profes\u00f6r Mark Richards DePalma ve ekibinin buldu\u011fu kal\u0131nt\u0131y\u0131 \u201cAdeta Kretas sonundan kalma bir bu\u00e7uk metre kal\u0131nl\u0131\u011f\u0131nda bir m\u00fcze\u201d \u015feklinde tan\u0131ml\u0131yor. Mark Richards ve yine Berkeley \u00dcniversitesi\u2019nde g\u00f6revli Walter Alvarez, bundan 40 y\u0131l \u00f6nce, Kretas sonundaki kitlesel yokolu\u015fa bir kuyrukluy\u0131ld\u0131z ya da g\u00f6kta\u015f\u0131 \u00e7arpmas\u0131n\u0131n neden oldu\u011funu ileri s\u00fcren ilk isimlerdi. \u0130kili bu sefer DePalma ve Hollandal\u0131 meslekta\u015f\u0131 Jan Smit taraf\u0131ndan cam ya\u011fmuru ve tsunami benzeri dalgalar\u0131n g\u00f6merek sakl\u0131 tuttu\u011fu y\u0131\u011f\u0131n\u0131 yerinde incelemek \u00fczere davet edildiler. Tektit ad\u0131 verilen bu tanecikler, atmosferde \u00e7arpman\u0131n etkisiyle eriyen ta\u015flardan olu\u015fuyor.<\/span><\/p>\n

Tsunami\u0307 mi\u0307 sey\u00e7 mi\u0307?
\n<\/b>Richards ve Alvarez \u00f6ncelikle bal\u0131klar\u0131n tipik bir tsunami ile karaya vurup g\u00f6m\u00fclm\u00fc\u015f olamayacaklar\u0131n\u0131 belirlediler; zira devasa dalgan\u0131n Bat\u0131 \u0130\u00e7deniz Yolu\u2019nun bu bilinmeyen koluna, 3000 kilometre \u00f6tede ger\u00e7ekle\u015fen \u00e7arpmadan en az 10-12 saat sonra ula\u015fm\u0131\u015f olmas\u0131 gerekiyordu -\u015fayet daha \u00f6nce s\u00f6n\u00fcmlenmemi\u015fse. Mant\u0131k \u015fuydu: Tektitler \u00e7arpmadan 45 dakika ila bir saat sonra ya\u011fmaya ba\u015flam\u0131\u015f olsa, deniz yata\u011f\u0131n\u0131n harekete ge\u00e7mesinden \u00f6nce \u00e7amurlu topraktaki oyuklar\u0131 olu\u015fturmu\u015f olmalar\u0131 imkans\u0131zd\u0131.
\n<\/span>Dolay\u0131s\u0131yla alternatif senaryo, 10 ila 11 \u015fiddetindeki bir depreminkine denk sismik dalgalar\u0131n \u00e7arpmay\u0131 izleyen 10 dakika i\u00e7inde kendini g\u00f6sterdi\u011fi, bunun da i\u00e7denizde sey\u00e7 ad\u0131 verilen, deprem s\u0131ras\u0131nda bir k\u00fcvetin i\u00e7indeki suyun \u00e7alkalanmas\u0131na benzer \u015fekilde, konumunu de\u011fi\u015ftirmeyen bir dalga yaratm\u0131\u015f oldu\u011fu y\u00f6n\u00fcnde de\u011fi\u015ftirildi. Nitekim b\u00fcy\u00fck depremler karayla \u00e7evrili su k\u00fctlelerinde sey\u00e7 denen bu hareket bi\u00e7imini s\u0131kl\u0131kla yarat\u0131r; Richards\u2019\u0131n belirtti\u011fine g\u00f6re genellikle de fark edilmezler. \u00d6rne\u011fin 2011\u2019de, Japonya\u2019n\u0131n Tohoku b\u00f6lgesinde ger\u00e7ekle\u015fen 9 \u015fiddetindeki depremden 30 dakika sonra, 8000 kilometre \u00f6tede Nove\u00e7\u2019te bulunan bir hali\u00e7te yakla\u015f\u0131k 2 metre y\u00fcksekli\u011finde sey\u00e7ler olu\u015fmu\u015ftu.
\n<\/span>Richards\u2019\u0131n ifadesiyle sismik dalgalar \u00e7arpmadan 9 ila 10 dakika sonra ortaya \u00e7\u0131km\u0131\u015f ve k\u00fc\u00e7\u00fck k\u00fcre ya\u011fmuru ba\u015flamadan evvel suyun \u00e7alkalanmas\u0131n\u0131 sa\u011flam\u0131\u015f olmal\u0131. K\u00fcrelerin yumu\u015fak \u00e7amur yap\u0131s\u0131ndaki karada huni bi\u00e7imli oyuklar a\u00e7t\u0131\u011f\u0131 ve bunlar\u0131n i\u00e7ini doldurdu\u011fu a\u00e7\u0131kt\u0131. Y\u0131llard\u0131r bu tektitlerin yol alma bi\u00e7imi hakk\u0131nda kafa yoran Alvarez, uzaydan d\u00fcnyaya do\u011fru balistik bir y\u00f6r\u00fcnge izlediklerini, terminal faz ivmelerinin ise saatte 100 ila 200 mile ula\u015ft\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcn\u00fcyor. Genel kanaat at\u0131k ya\u011fmurunun \u015fiddetinin b\u00fct\u00fcn bir Amerika k\u0131tas\u0131 boyunca yang\u0131nlara sebep oldu\u011fu y\u00f6n\u00fcnde.
\n<\/span>\u201cChicxulub \u00e7arpmas\u0131ndan kaynaklanan tsunamiler b\u00fcy\u00fck br kesinlikle belgelenmi\u015f durumda; bilinmeyen nokta, bunlar\u0131n i\u00e7denizlere ne \u00f6l\u00e7\u00fcde ula\u015ft\u0131\u011f\u0131yd\u0131. Mark g\u00f6zlemlerine ba\u015flad\u0131\u011f\u0131nda \u00e7ok \u00e7arp\u0131c\u0131 bir \u015fey fark etti: \u00c7arpma alan\u0131ndan yay\u0131lan sismik dalgalar atmosferden d\u00f6k\u00fclen at\u0131k ya\u011fmuruyla ayn\u0131 zamana denk gelmi\u015f olmal\u0131yd\u0131. \u0130\u015fte as\u0131l ayd\u0131nlamay\u0131 sa\u011flayan bilgi bu oldu.\u201d
\n<\/span>Buradan yola \u00e7\u0131karak en az iki devasa sey\u00e7in, muhtemelen 20 dakika arayla ger\u00e7ekle\u015ferek karay\u0131 sulam\u0131\u015f ve ard\u0131nda 2 metre kal\u0131nl\u0131\u011f\u0131nda bir fosil y\u0131\u011f\u0131n\u0131 b\u0131rakm\u0131\u015f oldu\u011funu s\u00f6ylemek m\u00fcmk\u00fcn. Bunlar\u0131n en tepesinde de iridyumdan zengin bir kil tabakas\u0131 yer al\u0131yor. \u0130ridyum yery\u00fcz\u00fcn\u00fcn nadir elementlerinden, ancak g\u00f6kta\u015f\u0131 ve kuyrukluy\u0131ld\u0131zlarda bolca bulunuyor. Kretas \u00c7a\u011f\u0131\u2019n\u0131n sonunu, Tersiyer \u00c7a\u011f\u0131\u2019n\u0131n (Paleojen olarak da bilinir) ba\u015flang\u0131c\u0131n\u0131 imleyen ve K-T s\u0131n\u0131r\u0131 (Kretas-Tersiyer s\u0131n\u0131r\u0131 anlam\u0131nda) olarak bilinen tabaka bu.<\/span><\/p>\n

\u0130ri\u0307dyum
\n<\/b>Alvarez ve Nobel \u00f6d\u00fcll\u00fc babas\u0131 Luis Alvarez, d\u00fcnyan\u0131n \u00e7e\u015fitli noktalar\u0131ndaki 66 milyon y\u0131ll\u0131k kaya\u00e7larda tespit edilen iridyumun ne anlama geldi\u011fini 1979\u2019da ilk ifade eden isimler olmu\u015flard\u0131. \u0130kili hem K-T s\u0131n\u0131r\u0131ndaki iridyumun hem kitlesel yokolu\u015fun g\u00f6kta\u015f\u0131 veya kuyrukluy\u0131ld\u0131z \u00e7arpmas\u0131ndan kaynakland\u0131\u011f\u0131n\u0131 ileri s\u00fcrm\u00fc\u015ft\u00fc.
\n<\/span>\u015eimdiki bilgiler \u0131\u015f\u0131\u011f\u0131nda \u00e7arpman\u0131n deniz taban\u0131ndaki kaya yata\u011f\u0131n\u0131 eritip asteroidi unufak etmi\u015f, toz ve erimi\u015f kayalar\u0131 stratosfere yollam\u0131\u015f oldu\u011fu s\u00f6ylenebilir. Ard\u0131ndan bunlar r\u00fczgarlar arac\u0131l\u0131\u011f\u0131yla gezegenin d\u00f6rt bir yan\u0131na ta\u015f\u0131nd\u0131 ve g\u00fcne\u015fi aylarca, hatta belki de y\u0131llarca g\u00f6lgede b\u0131rakt\u0131. G\u00f6kten ya\u011fan at\u0131klar sadece tektitlerden ibaret de\u011fildi; \u00e7arpman\u0131n etkisiyle kristal yap\u0131s\u0131 deforme olmu\u015f kuartz par\u00e7alar\u0131 da bu ak\u0131ma kat\u0131ld\u0131. Tuzla buz olmu\u015f meteordan d\u00f6k\u00fclen iridyumlu toz partik\u00fclleri ise \u00e7arpman\u0131n ard\u0131ndan yery\u00fcz\u00fcne d\u00fc\u015fen ve Kretas\u2019\u0131 sonland\u0131ran son bile\u015fen olmal\u0131.
\n<\/span>\u201cO zamanlar kitlesel yokolu\u015fu a\u00e7\u0131klamak \u00fczere \u00e7arpma hipotezini ileri s\u00fcrd\u00fc\u011f\u00fcm\u00fczde dayand\u0131\u011f\u0131m\u0131z tek nokta anormal derecede y\u00fcksek d\u00fczeydeki iridyumdu. Bu bir anlamda g\u00f6kta\u015f\u0131n\u0131n ya da kuyrukluy\u0131ld\u0131z\u0131n parmak izidir\u201d diyor Alvarez. \u201cOdur budur eldeki kan\u0131tlar b\u00fcy\u00fcd\u00fck\u00e7e b\u00fcy\u00fcd\u00fc. Fakat b\u00f6ylesi bir \u00f6l\u00fcyata\u011f\u0131 bulmay\u0131 a\u00e7\u0131k\u00e7as\u0131 hi\u00e7 beklemiyordum.\u201d
\n<\/span>Meteor hipotezinin temel bile\u015feni Meksika\u2019n\u0131n Yukatan Yar\u0131madas\u0131 a\u00e7\u0131klar\u0131nda bulunan ve tam da yokolu\u015fla ayn\u0131 zamana tarihlenen, Karayiplere g\u00f6m\u00fcl\u00fc haldeki Chicxulub krateriydi. D\u00fcnyan\u0131n \u00e7e\u015fitli yerlerindeki K-T s\u0131n\u0131r\u0131 alanlar\u0131nda, s\u0131k\u0131\u015fm\u0131\u015f haldeki kuartz yap\u0131lara ve cam sfer\u00fcllere de rastland\u0131. Tanis\u2019teki ke\u015fif ise do\u011frudan g\u00f6kta\u015f\u0131 \u00e7arpmas\u0131n\u0131n \u00fcretti\u011fi, olay an\u0131ndan hemen sonra hayat\u0131n\u0131 kaybeden hayvanlar\u0131 da i\u00e7ermesi bak\u0131m\u0131ndan t\u00fcr\u00fcn\u00fcn ilk \u00f6rne\u011fi.
\n<\/span>Alvarez heyecan\u0131n\u0131 \u015fu s\u00f6zlerle aktar\u0131yor: \u201cAn itibariyle kar\u015f\u0131m\u0131zda Robert DePalma\u2019n\u0131n Kuzey Dakota kaz\u0131s\u0131ndan \u00e7\u0131kan, muhte\u015fem oldu\u011fu kadar beklenmedik bir ke\u015fif var. \u00c7arpman\u0131n sonu\u00e7lar\u0131na dair son derece ayr\u0131nt\u0131l\u0131 bilgiler sunuyor. Benim a\u00e7\u0131mdan heyecan verici ve sevindirici bir geli\u015fme.\u201d<\/span><\/p>\n

Tekti\u0307tler
\n<\/b>Hollanda\u2019daki Vrije \u00dcniversitesi\u2019nden emekli sediment jeolojisi profes\u00f6r\u00fc Jan Smit de Tanis\u2019teki ekibe kat\u0131lan isimlerden; kendisinden uzmanl\u0131k alan\u0131 \u00e7er\u00e7evesinde kehribara g\u00f6m\u00fcl\u00fc haldeki tektitleri incelemesi istenmi\u015f.
\n<\/span>\u201cKaz\u0131 alan\u0131na 2015 yl\u0131nda gittim. DePalma g\u00f6zlerimin \u00f6n\u00fcnde d\u00f6rt metre uzunlu\u011funda, kehribar kapl\u0131 bir k\u00fct\u00fck \u00e7\u0131kard\u0131 topraktan. Kehribar, tektitlerin ilk bi\u00e7imleriyle korunmas\u0131n\u0131 sa\u011flayan bir jel g\u00f6revi g\u00f6r\u00fcr. Nitekim bu a\u011fa\u00e7lardaki re\u00e7ine de tektitleri b\u00fct\u00fcn\u00fcyle kaplam\u0131\u015f ve %1 dahi de\u011fi\u015fmelerine izin vermeden nas\u0131lsa \u00f6yle kalmalar\u0131n\u0131 sa\u011flam\u0131\u015ft\u0131. Tarihlendirmelerini yapt\u0131\u011f\u0131m\u0131zda K-T s\u0131n\u0131r\u0131yla birebir \u00f6rt\u00fc\u015ft\u00fcklerini g\u00f6rd\u00fck. Ger\u00e7ekten b\u00fcy\u00fck bir ke\u015fif bu!\u201d
\n<\/span>Smit bal\u0131k solunga\u00e7lar\u0131ndaki tektitlerin de bir ilk oldu\u011funu s\u00f6yl\u00fcyor:\u00a0<\/span>\u201cKa\u015f\u0131kbal\u0131klar\u0131 y\u00fczerken besin par\u00e7ac\u0131klar\u0131n\u0131 yakalamak \u00fczere a\u011f\u0131zlar\u0131 a\u00e7\u0131k hareket ederler. B\u00f6ylece t\u0131pk\u0131 k\u00f6pekbal\u0131\u011f\u0131 ya da balinalarda oldu\u011fu gibi minik partik\u00fcller solunga\u00e7lar\u0131na tak\u0131l\u0131r. Yakalad\u0131klar\u0131 \u015feyler aras\u0131nda g\u00f6r\u00fcnen o ki tektitler de var. Kendi ba\u015f\u0131na muhte\u015fem bir olay bu. Demek ki y\u0131\u011f\u0131n halinde karada biriken bu bal\u0131klar \u00e7arpma an\u0131n\u0131n ilk kurbanlar\u0131ndand\u0131.\u201d
\n<\/span>Smit kal\u0131nt\u0131lar aras\u0131ndaki <\/span>Triceraptops <\/span><\/i>g\u00f6vdesinin ve hadrozorun da \u00e7ok \u00e7arp\u0131c\u0131 oldu\u011funu, buradan dinozorlar\u0131n \u00e7arpma an\u0131na dek hayatta olduklar\u0131n\u0131n anla\u015f\u0131labilece\u011fini belirtiyor.
\n<\/span>\u201cSadece Meksika K\u00f6rfezi\u2019ndeki kal\u0131nt\u0131lardan yola \u00e7\u0131karak bu sonu\u00e7lara varmam\u0131z olanaks\u0131z olurdu. \u015eimdiyse elimizde zamanla daha da de\u011fer kazanacak bir ke\u015fif var. Pek \u00e7ok de\u011fi\u015fik a\u00e7\u0131dan incelenmeleri gerekiyor. Kariyerimin son demlerinde gelen bir arma\u011fan bu.\u201d<\/span><\/p>\n

Kaynak
\n<\/b>Robert Sanders, \u201c66 million-year-old deathbed linked to dinosaur-killing meteor\u201d, Berkeley News, 29 Mart 2019.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Sonun ba\u015flang\u0131c\u0131 bug\u00fcn Kuzey Dakota olarak bilinen b\u00f6lgedeki i\u00e7 denizin sular\u0131n\u0131 dev dalgalar halinde kabartan \u015fiddetli bir sars\u0131nt\u0131yla kendini g\u00f6sterdi. Ard\u0131ndan, sfer\u00fcl denen minik cam taneleri g\u00f6ky\u00fcz\u00fcnden ya\u011fan sa\u00e7malar gibi topra\u011f\u0131 d\u00f6vmeye ba\u015flad\u0131. Bu cam ya\u011fmuru \u00f6ylesine \u015fiddetliydi ki karay\u0131 kaplayan bitki \u00f6rt\u00fcs\u00fcn\u00fc ate\u015fe verdi. Sulardaki bal\u0131klar, solunga\u00e7lar\u0131n\u0131 t\u0131kayan cam taneleri y\u00fcz\u00fcnden nefes alamaz oldular. […]<\/p>\n","protected":false},"author":184,"featured_media":33631,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,4419,232],"tags":[4742,4452,4740,4741],"class_list":["post-33632","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","category-paleontoloji","category-yerbilimleri","tag-chicxulub-krateri","tag-goktasi-carpmasi","tag-k-t-siniri","tag-kretas-sonu-kitlesel-yokolusu"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t