An ice age is a very long time period, millions of years, during which major portions of the earth are covered in ice and glaciers. There have been five major ice ages recorded throughout history. We are presently in the midst of an ice age that began over two million years ago....
What is a glacial period? What is a continental glacier? What is glacial rock dust? What is the head of a glacial valley called? How is glacial till formed? What is glacial archaeology? What is Dinosaur Ridge? What is an alpine glacier?
We are currently in a relatively warmer part of that ice age, described as aninterglacial period, which began 11,700 years ago. This geological epoch is known as theHolocene. Over billions of years, the Earth has experienced numerous glacial and interglacial periods and has had five major ice...
Now, the climate continues to warm for a while because there is a lag effect,but gradually, as the concentration of greenhouse gases goes down, Earth starts to cool again and eventually you slip back into an ice age. Um, however, for the latest interglacial period, the one we're in now...
What is the Bering Strait land bridge?The Last Glacial PeriodThe last Ice Age last from about 115,000 to 11.700 years ago (in rough estimates). Because the glaciers in the Northern Hemisphere trapped so much water on the land the overall level of the global ocean dropped significantly....
an ice age can last for several thousand, or even millions of years. In our current times, the earth is warming, andicebergs are shrinking as a result of global warming. However, we are still technically in what is known as an "warm interglacial period" because of the presence of two ...
As always, this is a labour of love, but it aligns with an important message I share all the time– it is time to pay attention to the information that matters, and what is going on in our world matters. The shiny stuff (political scandals, celebrity nonsense, and ...
The field is a major academic discipline, and is also important for mineral and hydrocarbon extraction, knowledge about and mitigation of natural hazards, some engineering fields, and understanding past climates and environments. Geological evolution The geology of an area evolves through time as rock...
Oddly uncorrelated with atmospheric temperature or CO2, huh? In fact, three of the four most recent occured in the seventies, a time known for its cooling. Two of the top five occured around the period of the little ice age. What is normal? One other thought. I have often asked, vis ...
The area is characterized by a Mediterranean climate types marked by mild and humid winters, hot and dry summers and a relative long period of aridity each year which impose an effective and severe drought on the plants. Rainfall patterns and the oceanity are extremely varied, and this explain...