Lokacin Triassic

Arfafawa

A cikin zamanin Mesozoic muna da lokuta da yawa wanda aka raba wannan lokacin ilimin kasa. Yau zamuyi magana akansa Triassic. Rabuwa ne ga ma'aunin lokacin ilimin ƙasa na waɗannan lokutan uku wanda aka raba Mesozoic. Ya fara kimanin shekaru miliyan 251 da suka gabata kuma ya ƙare kimanin shekaru miliyan 199 da suka gabata. Waɗannan ranakun farawa da ƙarewa ba daidai bane amma ana alamta su da mahimman abubuwa daga mahangar ƙasa da ƙirar halitta. A wannan yanayin zamu sami yawan ƙarancin Permian-triassic da na triassic-jurassic.

A cikin wannan labarin zamu maida hankali kan bayanin dukkan halaye, ilimin halittu da yanayin Triassic.

Babban fasali

Assarewar Triassic

Wannan lokacin yafi bayyana da bayyanar dinosaur na farko. Waɗannan dabbobin sun sami wakilcin siffofin kafa biyu, abinci mai cin nama, da ƙarami. Koyaya, a ƙarshen Triassic sun riga sun sami haɓaka mai yawa kuma ee sun zama mafi rinjaye a ƙarshen duniya. Extensionaddamar da dinosaur ɗin ya zo ga ɓarkewar wasu rukuni na dabbobin da suka gabata kamar su tsoffin archosaurs da yawancin dabbobi masu rarrafe waɗanda suka bazu a wannan lokacin.

Triassic ilimin ƙasa

Yanayin Triassic

A wannan lokacin kusan dukkan ƙasashen duniyarmu sun tattara ne a cikin nahiya ɗaya da ake kira Pangea. Wannan nahiyar tana da siffar C kuma daga gabas akwai Tekun Tethys kuma kewaye dashi akwai Tekun Panthalassa. Wannan teku ana daukarta a matsayin teku ta duniya tunda ta mamaye duniya baki daya.

A waɗannan lokutan akwai abubuwa da yawa a cikin teku mai zurfi waɗanda aka adana a wannan lokacin kuma waɗanda suka ɓace ta hanyar ƙaddamar da farantin tekun ta hanyar motsi da ke haifar da haɓakar igiyar ruwan allon duniya. Wannan shine dalilin da yasa ba a san abubuwa da yawa game da buɗe teku ko yayin Triassic.

Nahiyar Pangea ta fara rarrabuwa a wannan lokacin musamman a lokacin marigayi Triassic. Kuma shine wannan lokacin shine An kasa shi zuwa zamani guda uku da aka sani da Triananan Triassic, Middle Triassic, da Upper Triassic. Wannan shine yadda aka raba yankin na Super tsakanin Laurasia da Gondwana. Bangaren farko ya fahimci dukkan nahiyar Asiya, Arewacin Amurka da Turai. Kashi na biyu na manyan kasashen sun hada da Afirka, Larabawa, Indiya, Ostiraliya, Antarctica, da Kudancin Amurka.

Babban yankin yana tafiya a hankali a hankali a lokacin Triassic. Anan ne babban yankin ya fara nuna alamun farko na rabuwa a manyan bangarorin biyu. Abubuwan da aka fara samowa a bayan teku sun haifar da ɓarkewar da ke haifar da rabuwar farko na manyan ƙasashe. Wannan rashin jituwa shine wanda ya haifar da farkon matsalar Pangea kuma hakan ya iya raba abin da yau muka sani da New Jersey daga Maroko.

A wannan lokacin matakin tekun ya dan tashi kadan duk da cewa adadin wuraren da suka bulla har yanzu yana da girma sosai. Kuma shine cewa tekun Tethys ya samar da rami mai faɗi wanda ya zama hanyar mamaye jirgin ruwa.

Yanayin Triassic

Dabbobin Triassic

Sauyin yanayi na wannan lokacin gabaɗaya yayi zafi da bushe. Wadannan manyan zafin sune sanadin asali da fadada hamada da masu kaura. Tun da Pangea babba ne, tasirin iyakokin teku yana da iyakancewa. Kuma shine cewa teku yayi aiki a matsayin mai daidaita yanayin duniya. Sabili da haka, a cikin yankunan da ke cikin ƙasa zamu iya fuskantar canje-canje kwatsam a cikin zafin jiki tunda babu kusanci da tekun wanda zai iya daidaita yanayin zafin saboda aikin ruwan tekun.

Yanayin nahiya ya kasance na zamani ne sosai a wannan lokacin tare da lokacin bazara mai zafi da damuna mai tsananin sanyi. Tun da teku ba ta iya aiki a matsayin mai kula da yanayin zafi ba, akwai tsauraran yanayin zafin jiki da yawa a kowane yanayi na shekara. Wataƙila akwai damuna mai ƙarfi a cikin yankin Ecuador, kodayake babu wata alamar glaciation a kusa ko a kowane sandunan. A zahiri, a wannan lokacin yankuna na Polar a bayyane suke suna da yanayi mai yanayi. Wannan yanayin ya zama cikakke don iya samar da dukkanin halittu masu kama da jini wanda jininsu yayi sanyi.

Flora da fauna

Fadada Dinosaur

Kamar yadda muka ambata a baya, matakin teku ya ɗan tashi kaɗan yayin Triananan Triassic. A ƙarshen wannan lokacin akwai halaka mai yawa wanda conodonts da dabbobi masu rarrafe suka ɓace. A cikin wannan halaka 20% na dabbobin ruwa sun ɓace kodayake duk waɗannan rukunin za'a iya dawo dasu a lokacin Jurassic. Mafi yawan wadanda suka mutu sakamakon yaduwar dinosaur sun kasance jinsin halittu masu rarrafe da dabbobi masu yawa.

Kamar yadda ake tsammani a cikin yanayi, akwai dabbobi da tsirrai waɗanda ke cin gajiyar ɓarkewar wasu jinsunan, tunda duk wannan na iya zama masu farautar halitta. Idan ba su da masu farautar dabi'a, yawan su na iya bunkasa cikin sauri. Wadannan wadanda suka ci gajiyar halaka a duniya sune dinosaur masu saurin fadada, galibi a lokacin Jurassic, kuma sun mamaye mazaunan ƙasa a duk cikin zamanin Mesozoic.

Dabbobi masu rarrafe da zasu iya rayuwa daga fadada dinosaur sune ichthyosaurs da plesiosaurs. Shaidun kimiyya sun nuna cewa akwai kwasa-kwasan halakar da yawa yayin Triassic. Wani ya kasance a farkon lokacin kuma wani a karshen. Lokaci na waɗannan ɓarna a cikin tekuna ba gaba ɗaya ya bayyana ga kimiyya ba amma akwai abubuwan da ke haifar da ƙarancin Triassic waɗanda har yanzu ba a san su ba.

Daya daga cikin manyan binciken da aka gudanar a arewa maso yammacin Arizona a shekarar 2002 ya kasa nuna canje-canje kwatsam a muhalli ko yanayin zafi, don haka da yiwuwar cewa musabbabin lalacewar ya kasance yanayi ne gaba daya. A waɗannan lokutan conifers da sauran rukunin wasannin motsa jiki sune waɗanda suka maye gurbin tsire-tsire na tsire-tsire tare da tsaba waɗanda suka yaɗu kuma suka mamaye mazaunan ƙauyuka a waɗannan lokutan.

Ina fatan cewa tare da wannan bayanin zaku iya ƙarin koyo game da lokacin Triassic.


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  1.   David m

    Mai ban sha'awa. Me yasa kace a cikin Triassic teku ba zai iya aiki azaman mai kula da yanayin zafi ba?

  2.   Francis Anthony m

    Narke duniyar da ta gabata, wanda ba a iya misaltuwa, adadin miliyoyin shekaru, mun yarda ko ba mu yarda da shi ba, duwatsu ko burbushin halittu suna gayyatar mu mu yi tafiya zuwa abubuwan da suka gabata.