Was there a single ice age, or did multiple glaciations occur, possibly even dozens? To answer this, we must consider the available evidence.
Evolutionary scientists generally agree that the Ice Age occurred between roughly 2.6 million and 11,700 years ago. This entire period, marked by the dominance of ice sheets in the higher latitudes, is referred to as the Pleistocene. In the context of evolutionary chronology, it is situated within the Quaternary period, lying between the Pliocene (part of the Tertiary) and the Holocene, which represents the current epoch.
It is widely accepted that the Ice Age was divided into alternating glacials and interglacials. A glacial represents the main phase of the Ice Age, characterised by the dominance of ice sheets and glaciers in cooler continental regions, such as Poland. In contrast, interglacials were transitional periods occurring between two glacials. These periods were historically considered much shorter, typically lasting around 10,000 years, while glacials extended for roughly 90,000 years. Consequently, the entire cycle was thought to span about 100,000 years. However, between 2.6 million and 1 million years ago, it was believed that this cycle lasted only around 40,000 years.1
The Ice Age – a history of research
It is worth exploring the origins of the concept of the Ice Age, including the idea of multiple ice ages. In the 18th century, scientists studying landforms and deposits in post-glacial areas deduced that large ice sheets must have once covered the Earth. Upon closer inspection of these deposits, however, they found that glacial materials were interrupted by narrow layers of sand and gravel. By the early 20th century, the consensus was that only four ice ages had occurred, a view that remained dominant for around 60 years. Yet, in the 1970s, a new theory emerged, proposing the existence of additional ice ages, with the claim being supported by newly gathered evidence.2
Today, most scientists agree that there were approximately 30 distinct ice ages, interspersed with interglacials. However, substantial evidence suggests that there may have been only one Ice Age. What is the nature of this evidence?
Evolutionists vs. the Ice Age
Evolutionary scientists, in their study of evidence from the Ice Age, strive to reconstruct the Earth’s climate history. A key part of this involves unraveling the mystery of how ice sheets initially formed. In other words, what triggered the Ice Age, and which processes were involved? Contrary to what might be assumed, explaining the Ice Age is far from simple, especially given the complex principles that govern meteorological phenomena. It continues to be an unresolved puzzle.
While the Milankovitch cycles, particularly the variations in Earth’s orbital eccentricity (approximately every 100,000 years) and axial tilt (roughly every 40,000 years), are frequently cited as a potential explanation, this theory itself introduces further questions.3
If these cycles have been occurring for millions of years, why did Earth’s climate only cool enough to trigger an Ice Age around 2.6 million years ago? Furthermore, what caused the dominant climatic influence to shift about 1 million years ago from the 40,000-year axial tilt cycle to the 100,000-year orbital eccentricity cycle? These questions remain without clear answers.
The meteorology of the Ice Age
Most crucially, scientists have yet to determine the exact meteorological processes responsible for the formation of ice sheets several kilometres thick. A research meteorologist by the name of Michael J. Oard suggests that the formation of massive glaciers across vast continental areas required two key conditions: cooler temperatures and abundant snowfall.4 He proposes that both of these factors could have been triggered by increased volcanic activity, both on land and in the oceans.
Oard contends that only a global flood, accompanied by intense tectonic activity, could account for the beginning of the Ice Age. In this scenario, volcanic eruptions would have heated the oceans, leading to significant water evaporation into the atmosphere. This water vapour would then have travelled to higher latitudes, where it would have fallen as heavy snowfall, contributing to the formation of glaciers.5 As the oceans gradually cooled, they would no longer have been able to provide the necessary amount of water vapour, meaning that the Ice Age could have occurred only once.6
Other evidence
Glacial till
Glacial till is a type of sedimentary rock formed from material gathered by glaciers, which is frozen, carried to their edges, and eventually deposited when the glaciers melt. Its presence marks the extent of ice sheets or glaciers. In Poland, glacial till is found across nearly the entire country, with the exception of the southern mountain regions.
One might expect that, over the course of multiple, prolonged ice ages, glacial till would have been transported across vast distances, perhaps several thousand kilometres. However, research has shown that the sediments deposited are mainly local, originating from nearby bedrock. This indicates not only that there was a single Ice Age, but also that it likely lasted for a relatively brief period.7
Animals found frozen in ice
Another line of evidence comes from fossils. It is well-documented that many species, including mammoths, became extinct due to climate changes following the Ice Age.8 Yet, if this is true, why does it appear that these animals managed to survive throughout all the interglacials (the periods between ice ages) over the past 2.6 million years? Furthermore, there is no evidence of any significant evolutionary changes during the Pleistocene interglacials. Given this, why did these species only become extinct after the final climatic warming of the Holocene?
Furthermore, animal fossils are seldom found in the Pleistocene interglacial layers. During these interglacials, one would expect these animals to have recolonised regions that had been left uncovered by the retreating ice sheets for tens of thousands of years. This implies that the ice sheets and glaciers did not retreat as far north as they do today, when only Greenland and Antarctica remain ice-covered.9
Conclusion
The answer to the questions raised may lie in the idea that there was only one Ice Age. Throughout this period, ice sheets underwent cycles of retreat (regressions) and advance (transgressions). What evolutionists view as distinct glaciations, separated by interglacials, might actually represent different phases within a single Ice Age. This Ice Age could have been divided into stadials, when the ice advanced, and interstadials, when it partially retreated. Additionally, some evidence points to both the causes and the relatively brief duration of the Ice Age, which appears to align with the biblical account of a global flood.10
By the way, we recommend reading the articles:
- Were Dinosaurs Cold-Blooded?
- A Scientist’s Fraudulent Embryo Drawings
- The Evolutionary Roots of Racism
- The Problem of Evil: Where Was God?
- Does the Bible Explain the Ice Age?
Footnotes
- Oard, M. J., ‘Only One Ice Age’, Answers in Genesis, 1 October 2004, https://answersingenesis.org/environmental-science/ice-age/only-one-ice-age/.
- Ibid.
- Buis, A., ‘Milankovitch (Orbital) Cycles and Their Role in Earth’s Climate’, NASA Global Climate Change, 27 February 2020, https://climate.nasa.gov/news/2948/milankovitch-orbital-cycles-and-their-role-in-earths-climate/.
- Oard, M. J., ‘The Genesis Flood Caused the Ice Age’, Answers in Genesis, 1 October 2004, https://answersingenesis.org/environmental-science/ice-age/genesis-flood-caused-the-ice-age/.
- Ibid.
- Oard, M. J., Only One Ice Age, op. cit.
- Ibid.
- Geggel, L., ’10 Extinct Giants That Once Roamed North America’, Live Science, 15 August 2015, https://www.livescience.com/51793-extinct-ice-age-megafauna.html.
- Oard, M. J., Only One Ice Age, op. cit.
- The Bible, New King James Version, 1982, Genesis 7–8.
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