Category: Method & Theory

By Timothy Allan

March 19, 2020

Sourcing with pXRF (portable X-Ray Fluorescence)

“Sourcing” is the study of associating artifacts with their geologic origin in order to infer human transport of materials. This field of research has revealed networks of trade and exchange among indigenous peoples in pre-contact times. But how do researchers figure out the actual source? One method is with Portable X-Ray Fluorescence (pXRF) analysis. These

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By Corey Cookson

April 4, 2019

Where does the Obsidian we find come from?

Obsidian is a volcanic glass that was used by pre-European contact people all over North America. Known for its natural sharpness, ancient peoples sought the material for making tools for cutting and slicing. Additionally, it is easier to flintknap than the harder and more readily available materials local to Alberta. As many of our readers

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By Corey Cookson

February 18, 2019

Ground Penetrating Radar

Ground-Penetrating Radar (GPR) is the process of sending radiowaves through the ground. As these radiowaves pass through the ground, any change in the subsurface materials will cause some energy to be reflected back to towards the surface while the remaining energy continues deeper. This information is recorded by a receiver which records the time it

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By Madeline Coleman

August 28, 2018

Muddy Lab Secrets

The mud we slog through in the field doesn’t always stay in the field. It’s wrapped around a lot of the artifacts we find, and ends up in our sample bags. Once we get back from the field, we start the process of washing all the artifacts. As the sediment is brushed away, some of

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By Corey Cookson

April 10, 2018

Features of a Flake

Back in 2015 I was dropped off by a helicopter in the middle of a large muskeg to assess a cutblock for Alberta-Pacific Forest Industries. After trudging my way through the swamp to the cutblock, I found a very prominent but small hill. I put my shovel in the ground and I found one large,

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By Reid Graham

April 4, 2018

We Know How Old Stone Points Are, Right?

Back in September of 2017, I found what would probably be one of the coolest artifacts that I will ever find in my field survey career. My coworker Vince and I got up one fateful morning and set out on our four hour quad ride into one of the most beautiful areas in Northern Alberta:

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By Teresa Tremblay

November 27, 2017

The View From Out Here

We took this photo in the fall of 2016 while completing fieldwork for Sundre Forest Products’. It’s of the Clearwater River valley as seen from a site we found that year. The site was easily identified because artifacts were eroding out of the steep valley wall and the ATV trails that cross the landscape. From

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By Britt Romano

August 28, 2017

Index to Alberta Homestead Records 1870 to 1930

Many people are interested in researching their family history and genealogy. The Index to Alberta Homestead Records are an excellent place to start your research. The following blog will give instructions on how to use the Index. If you wish to learn what the homestead records are, or how they can help archaeologists, please check

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By Britt Romano

August 14, 2017

The Alberta Homestead Process

Homestead records are a valuable research tool for archaeologists, historians and for people researching their own family history or genealogy. If you want to see how homestead records can help archaeologists please read our previous blog post. Before I explain how to use these records, I will give a brief description of the homesteading process

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By Britt Romano

July 3, 2017

How Homestead Records Can Help Archaeology: An Example from Peace River

In the summer of 2016, while doing some work on behalf of Northern Sunrise County near Peace River, Tree Time archaeologists, recorded a cabin as an archaeological site. Although the cabin had clearly been renovated in the late 20th century with wood paneling and plastic sheeting, the cabin showed signs of earlier construction. The cabin

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