Creating a chronology of the Murrumbidgee River

And now for something a little different. In June and July this year,  I found myself at a conference on paleoclimate, landscapes, vegetation, humans and ended up bumping along dirt roads in a mini bus visiting many curious locations with a very interesting bunch of researchers. How old our our rivers and landscapes? How did climate change affect that landscape? Where did all the dust and water come from and where did it go? Below are some photos of two locations where researchers such as Page, Nanson and Price (1996) gathered dates showing five phases of paleochannel activity along the  Murrumbidgee area of the Riverine Plain of southeastern Australia. The first two phases suggest greater fluvial activity and reduced dust activity followed by seasonal snow melts and increased peak flows after the last Glacial Maximum and the build up of source bordering aeolian dunes. Finally the present flow regime was established around 12,000 years ago.  Researchers continue to gather dates and look for environmental proxies (such as pollen and fossils) to help create a more detailed picture of what was happening and this information helps inform how we manage our water systems and groundwater, helps create a context for the movement of humans and other species across the landscape and other intriguing things.

Read more about it from here:

PAGE, K., NANSON, G. and PRICE, D. (1996), Chronology of Murrumbidgee River palaeochannels on the Riverine Plain, southeastern Australia. J. Quaternary Sci., 11: 311–326

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s