Tag

Stalagmites

All articles tagged with #stalagmites

Caves Unveil Green Sahara From 8,000 Years Ago
science1 month ago

Caves Unveil Green Sahara From 8,000 Years Ago

Scientists analyzing stalagmites from caves south of the Atlas Mountains in southern Morocco find rainfall persisted from 8,700 to 4,300 years ago, signaling a greener Sahara; uranium-thorium dating and oxygen isotope analysis tie the wetter period to tropical moisture plumes, and archaeological records show Neolithic communities expanding there as grazing lands widened.

Ancient Maya Collapse Linked to Prolonged Drought, New Cave Evidence Shows
science8 months ago

Ancient Maya Collapse Linked to Prolonged Drought, New Cave Evidence Shows

Chemical analysis of stalagmites from a Mexican cave revealed that during the Maya collapse (871-1021 CE), there were eight droughts lasting over three years, with the longest lasting 13 years, likely contributing to societal decline. This detailed climate data aligns with archaeological evidence of halted monument construction and societal upheaval, providing new insights into the role of climate stress in the Maya civilization's decline.