Menene lokacin ilimin ƙasa kuma yaya ake auna shi?

A lokuta da dama watakila ka karanta maganganun na a cikin sakonnin na "Lokacin ilimin ƙasa". Ba za a iya amfani da ma'aunin da muka saba aiki da shi ba don yin magana game da ilimin ƙasa da kuma canjin duniya ko kuma duniya. Ka tuna cewa ma'aunin ɗan adam wanda muke aiki akai-akai kusan shekaru 100 ne ga kowane mutum. Koyaya, lokaci bashi da ma'ana ga tsarin ilimin ƙasa. Wannan shine inda zamu tattauna game da lokacin ilimin ƙasa.

Nazarin Duniya yana buƙatar samun sikelin girma wanda zai iya kewaye dukkan hanyoyin ilimin ƙasa kamar yadda suka faru a zahiri. Sabili da haka, a yau zamuyi magana akan lokacin ilimin ƙasa. Shin kuna son sanin yadda masanan ilimin lissafi ke sanyawa da kuma kwanan watan abubuwan da suka shafi kasa a duniyar mu?

Ma'anar lokacin ilimin ƙasa

Don matse dukkan bayanan ilimin ƙasa muna amfani da wannan lokacin ilimin ƙasa. Lokacin da muke magana, alal misali, game da samuwar duwatsu masu ƙyalƙyali, muna magana ne game da cushe kayan aiki ta ƙarfin matsi. Wannan horon ba ya faruwa a cikin kwanaki, makonni, ko watanni. Yana da ƙari, Ba ya faruwa a cikin shekaru 100. Tsarin samuwar dutsen mai danshi kamar dutsen ƙura yana ɗaukar dubban shekaru. 'Yan Adam ba ƙaramin ƙyaftawa ba ne a cikin tarihin ilimin ƙasa.

Don gabatar da dukkan hanyoyin ilimin ƙasa a mizanin da zamu iya aiki akan shi, muna amfani da Aeons, Geological Ages, period and erachs. Sabanin lokacin al'ada wanda muke amfani dashi don aiki, lokacin ilimin ƙasa ba shi da tsayayyen lokaci. Wannan ya faru ne saboda akwai shimfidawa a tarihin Duniya inda wasu manyan abubuwan da suka faru suka faru. An taƙaita waɗannan abubuwan a cikin lsamuwar dutse, zaizayar kasa, yawan gushewa, da dai sauransu.

Tare da duk waɗannan halaye da jagororin, zamu iya ayyana lokacin ilimin ƙasa kamar lokacin da ya faro tun daga samuwar duniya da ci gabanta (kimanin shekaru biliyan 4,5 da suka gabata) har zuwa yanzu. A takaice, sai kace kalandar Duniya ce.

Sikeli da abubuwan da suka shafi kasa

Masana ilimin ƙasa da sauran masana kimiyya suna amfani da wannan ma'aunin lokacin. Na gode mata, Zasu iya sanya lokaci da kwanan wata ga mahimman abubuwan da suka faru a Duniya. A cikin duwatsu akwai inda zaku sami ƙarin bayani game da abin da ya faru a duniyarmu tsawon waɗannan shekaru biliyan 4,5.

Har zuwa karni na XNUMX Duniya ana tsammani tana da fewan shekaru dubu ne kawai. Gaskiyar ilimin ƙasa ya zo tare da gano tasirin rediyo ta hanyar Marie Curie a cikin ƙarni na XNUMX. Godiya ga wannan ya kasance yana yiwuwa ya zuwa yau duwatsu na ɓawon burodi na ƙasa da faduwar meteorites.

Idan muna son magana game da lokacin ilimin ƙasa, ba za mu iya amfani da raka'a lokaci kamar shekaru ko ƙarnika ba. Hanya mafi amfani ita ce rarraba lokaci ta manyan abubuwan ilimin ƙasa. A takaice, yana magana ne akan manyan canje-canje da duwatsu da rayayyun halittu suka sha wahala tun asalin duniyarmu.

Yanayin kasa

A lokacin ilimin geologic, mafi girman lokacin amfani shine eon. An rarraba wannan yanayin zuwa zamani, lokuta, zamanai, da matakai. Dukan tarihin duniya ya kasu kashi biyu zuwa manyan shekaru. Na farko shine Precambrian, inda Duniya ta kafa kimanin shekaru biliyan 4,5 da suka wuce. Ya ƙare kimanin shekaru miliyan 570 da suka gabata. Yanzu muna cikin Phanerozoic Aeon. Waɗannan eons ɗin suna da girma sosai, saboda haka muna buƙatar ƙananan lambobin lokaci.

Zamuyi karatu mai zurfi kowane bangare na ma'aunin lokacin binciken kasa:

Eon

Shine mafi girma duka a ma'aunin lokaci. Ana auna shi ne duk bayan shekaru biliyan 1.000. Hanya daga Precambrian zuwa Phanerozoic na faruwa ne saboda warwatsewar babban yankin da ake kira Pannotia. Phanerozoic yana nufin "rayuwa mai ganuwa." Ya kasance akwai rayuwa kafin farkon wannan lokacin, amma wannan shine inda suka fi rikitarwa da haɓaka.

Era

Zamanin ba daidaitaccen yanki bane. Yana hada muhimman canje-canjen yanayin kasa ko halittar da duniyar ta wahala tun bayan samuwar ta. Kowane zamani yana farawa ne da muhimmin abu. Misali, Mesozoic yana farawa ne da bayyanar tsuntsayen farko da dabbobi masu shayarwa.

Zamanin lokacin ilimin ƙasa shine: Azoic, Archaic, Proterozoic, Paleozoic (tsohuwar rayuwa), Mesozoic (matsakaiciyar rayuwa), da Cenozoic (rayuwar kwanan nan). Tunda zamanin yayi yawa a cikin lokaci, ana buƙatar rage rarrabuwar don ƙarin daidaito.

Lokaci

Game da rabe-raben zamani ne. Kowane lokaci alama ce ta al'adun ƙasa ko bayyanar halittar da ke zama alama. Misali, a zamanin Cambrian babban yankin da ake kira Pangea ya balle.

Zamanin

Zamanin shine rabo na lokaci. A kowane tarihin al'adun gargajiya ana yin rikodin su akan ƙarami. Misali, a cikin Paleocene akwai rabuwar Turai da Arewacin Amurka. Kodayake a cikin taswira da yawa na lokacin ilimin ƙasa lokacin ƙarshe da aka rubuta shine Holocene, Duniya ta riga ta wuce shi. Yanzu muna cikin Anthropocene. Wannan shine farkon zamanin da aka ayyana ta hanyar aikin mutum.

Anthropocene

Babu makawa cewa dan Adam ya samu babban sakamako a Duniya. Fiye da duka, daga juyin juya halin masana'antu zuwa yau, canjin duniya ya kasance gabaɗaya. Tsarin halittu na yau da kullun wanda mutum bai canza shi ba yayi qaranci. An Adam ya sami damar shiga da fasalta yanayin filin da ke kusan kowane ɓangaren duniya.

Manyan canje-canje a kan sikelin duniya kamar canjin yanayi ana haifar da hayaƙin iskan gas daga ayyukanmu. Kamar yadda yake tare da ozone layer, wanda ya dawwama a tsaye, mun sami nasarar kusan kawo shi cikin 'yan shekarun da suka gabata. Muna magana ne game da ci gaban da ya faru cikin kusan shekaru 300. Yawan mutanen duniya a cikin shekara ta 1750 bai kai mazauna biliyan ba. Koyaya, a yau, mun fi biliyan 7,5. Ana sa ran cewa a shekara ta 2050 za mu kusan biliyan 10.

Kamar yadda kake gani, ma'aunin ilimin kasa yana da matukar mahimmanci don yin burbushin halittu da kuma fahimtar asalin duniyar tamu. Kuma ku, kuna da masaniya game da lokacin ilimin ƙasa?