Blog Posts Tagged "paleoclimate"

A Glimpse into the Pleistocene

When you think of an Ice Age what do you imagine? Perhaps you think of a scene of the Earth covered in ice, with mammoths and other types of megafauna roaming the land? This image is representative of the Pleistocene Epoch, a period in geologic time ranging from approximately 2.5 million to 12,000 years ago.

Busy days for the Micropaleo folks on the JR!

Since drilling operations began on June 4th, we started looking at sediment samples recovered from approximately 4,000 m water depth in the Gulf of Alaska. After almost two weeks of drilling, we have recovered several hundred meters of sediment, which will be used to reconstruct the environmental conditions of the northeastern Pacific and the adjacent land during the last 4 million years.

Long-term Climate Change and Milankovitch Cycles

The Earth’s climate has varied drastically throughout geologic time. It’s hard to imagine that global climate can swing from being completely ice-free, as it was approximately 56 million years ago during the Paleocene-Eocene Thermal Maximum, to an Ice Age in a relatively short (geologically speaking) time frame.

Exp359. JOIDES. 22nd Oct. Why these deepths ?

The drill string was lowered to the seafloor with the RCB in the afternoon for a seafloor depth of 528 mbrf.

The plan for hole U1466B is to drill down to 314m and then to RCB core to the 1010 m target .