The M+G+R Foundation

12,900-11,500 Y.A. = The Younger Dryas

The Younger Dryas were known as the return to cold conditions from 12,900-11,500 years ago. Paleoclimatic data shows this through pollen data that indicate that forests which had recently developed in Europe during the aborted warming following the ice ages were suddenly replaced again by artic shrubs, herbs and grasses, and Greenland ice cores indicate a local cooling of about 6 degrees C during this event.

10,000 Y.A.= Holocene

Following the Younger Dryas is the present warm epoch, known geologically as the Holocene Interglacial.

The Holocene started suddenly around 11,500 years ago. Greenland ice cores recorded a striking sudden cooling event about 8,200 years ago. This cooling event gave cool, dry conditions that lasted about 200 years, before there was a rapid return to conditions warmer and moister than today. In addition, this cooling shows up in records from North Africa across southern Asia as a phase of arid conditions due to failure of summer monsoon rains. Furthermore, the cold and aridity also looks like it hit northernmost South America, Eastern North America, and parts of North Western Europe.

1250-1850 AD= The Little Ice Ages

Following the Holocene there was a "Medieval Warm Period" which was followed by a longer span of considerably colder climates, often termed the "Little Ice Age" which was when the global mean temperature may have been 0.5 Ð1.0 degrees C colder than today.

Paleoclimatic evidence shows that Alpine glaciers moved into lower elevations, rivers that rarely freeze today were often completely ice-covered in the winter time, and precipitation patterns also changed in many regions.

Excerpt from:


The M+G+R Foundation
About Us and Frequently Asked Questions



HOME PAGE - Español

HOME PAGE - Portugues


Our Research Department

To Search for Information Within Our Domain Click Here

Document Indexes: - Sorted by Title - Sorted by File Name

Future Use

Please Note: If the above dated image does not appear on this document, it means that you are not viewing the original document from our servers. Should you have reason to doubt the authenticity of the document, we recommend that you access our server again and click on the "Refresh" or "Reload" button of your Browser to view the original document.

If you wish to contact The M+G+R Foundation, please Click Here