Respuesta :
The times in the past when continental glaciers covered large parts of Earth’s land surface were the ice age. That was a period of colder global temperatures and recurring glacial expansion capable of lasting hundreds of millions of years.The Ice Ages began 2.4 million years ago and lasted until 11,500 years ago.
The times in the past when continental glaciers covered large parts of Earth’s land surface was the Ice Age.
Further Explanations:
Ice Age was a long period on the Earth’s Surface and atmosphere marked by the reduction of temperature that resulted in the formation of ice sheets and alpine glaciers.Ice age is marked by the glacial period that is individual pulse within a cold climate. During the Ice, thehemispheres were covered with sheets of ice.
Earth is being marked by almost five ice ages namely Huronian, late Paleozoic, Andean- Saharan, Cryogenian,and the latest one Quaternary Ice age. Well established earliest ice age rocks are called Huronian that is expected to be formed around 2 billion years ago during Proterozoic eon.Cryogenianhas existed around 700 million years ago while the late Paleozoic age existed around 300 million years ago.
Though the glacial period ended 8,000 years ago but its effect is felt still today as its weight was so great that it led to the deformation of earth’s crust and mantle. During deglaciation sea level also rose and that resulted in the sudden shifting of the hydration system and coastline.
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Grade: High School
Subject: Geography
Chapter: Ice Age
Keywords:Ice Age, ice sheets, alpine glaciers, hemispheres, Huronian, late Paleozoic, Andean- Saharan, Cryogenian, Quaternary Ice age, Proterozoic eon.