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Earth's current icehouse state is known as the Quaternary Ice Age and began approximately 2.58 million years ago. [17] However, an ice sheet has existed in Antarctica for approximately 34 million years. [17] Earth is now in a clement interglacial period that started approximately 11,800 years ago. [17]
Shows the pattern of temperature and ice volume changes associated with recent glacials and interglacials. An interglacial period (or alternatively interglacial, interglaciation) is a geological interval of warmer global average temperature lasting thousands of years that separates consecutive glacial periods within an ice age.
A less severe cold period or ice age is shown during the Jurassic-Cretaceous (150 Ma). There have been five or six major ice ages in the history of Earth over the past 3 billion years. The Late Cenozoic Ice Age began 34 million years ago, its latest phase being the Quaternary glaciation, in progress since 2.58 million years ago.
This area was covered by an ice field during the last ice age, and preliminary data from Hall’s research suggest the ice had collapsed back to its center by around 18,000 years ago.
Over time, this developed into the concept that they were all part of a much longer ice age. [citation needed] The concept that the Earth is currently in an ice age that began around 30 million years ago can be dated back to at least 1966. [12] As a geologic time period, the Late Cenozoic Ice Age was used at least as early as 1973. [13]
Researchers say the planet seem naturally on track to escape an ice age for the next 50,000 years, an unusually long period of warmth.
The first sea ice-free September could occur as early as the 2030s, the study found. Arctic sea ice has been declining for decades but has shrunk at an even faster rate in the past 20 years.
Ice Age: The Meltdown, a 2006 sequel; Ice Age: Dawn of the Dinosaurs, a 2009 sequel; Ice Age: A Mammoth Christmas, a 2011 TV special; Ice Age: Continental Drift, a 2012 sequel; Ice Age: The Great Egg-Scapade, a 2016 TV special; Ice Age: Collision Course, a 2016 sequel; The Ice Age Adventures of Buck Wild, a 2022 spin-off