XRF on Soils

[ru...@sfu.ca]

Hi all and I will search through the catalogue of discussions here as well. I am looking for guidance to do pXRF with my Tracer 5i on soils/sediments taken with a percussion corer made by JMC. I am interested in minimal impact to archaeological sites and using my Tracer to scan the materials taken from my corer to potentially find signatures of a suite of elements associated with possible human burials ( Na, K, P, S, Ca, Mg, Mn, Fe, Cu, Zn, Co and Se). 

I have taken a few test cores from a shell midden site here on the west coast of Canada, set my Tracer to spectrometry mode and adjust power to 15kV and 40 amps. Scanning the material in the core produces scatter and not so good readings, but I cut the core open and scanned right on the material and got good results. 

Anyone else doing anything like this? and or have ideas and suggestions? 

Rudy

SFU Archaeology

[Lee Drake]

Hi Rudy,

Attaching a couple papers. Depending on how you calibrate Brent et al 2017 might be relevant as it handles measuring in wet soil (eg unprepared conditions). 

The key elements I would aim for would be P and S from the 15 keV scan - both related to nutrient recycling. Being a shell midden, I’d be less inclined to look at Ca, and it might add a lot of S as well. 

A github repo (R based) has a shiny app that you can use to upload spectra data (preferably CSV files but PDZ might work depending on how data was collected), assign depths, and even apply an age model. It’s a bit finicky, but you can try it out here: 

https://github.com/leedrake5/CloudCore

- Lee

--
Visit the pXRF for Cultural Heritage website at:
https://sites.google.com/site/pxrfgroup/
---
You received this message because you are subscribed to the Google Groups "pXRF for Cultural Heritage" group.
To unsubscribe from this group and stop receiving emails from it, send an email to pxrf+uns...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/pxrf/e3fc8027-f8be-4e34-b18a-c7d06cabd762n%40googlegroups.com.

[Rudy Reimer]

Thanks Lee! I will look into this. I talk ed with Bruce this morning and between the 2 of you I have a better handle on this. 

Huy chexw a,

Rudy Reimer Yumks

Canada Research Chair in Indigenous Community Archaeology

Assistant Professor 

Department of Archaeology

Simon Fraser University

ta new̓yap Siy̓ám̓ ta new̓yap Siyáy̓, en stl’i7 kwins kw’enmantúmi wit Rudy Reimer kwi en sna Yumḵs kwi en kwshámin Skwxwu’7mesh U’xwumixw, tiná7 chen tl’a Ch’iyáḵmesh iy ta Sen̓áḵw Chen kw’enmantúmiyap. To each of friends and respected ones, I first would like to thank you. My English name is Rudy Reimer, my Sḵwx̱wú7mesh Úxwumixw (Squamish Nation) ancestral name is Yumks. Sen̓áḵw and Ch’iyáḵmesh is where my ancestral name comes from. To each of you, I give you my thanks.  

---

From: px...@googlegroups.com <px...@googlegroups.com> on behalf of Lee Drake <b.lee...@gmail.com>
Sent: July 16, 2024 9:31 AM
To: px...@googlegroups.com <px...@googlegroups.com>
Subject: Re: [pxrf] XRF on Soils

 

You received this message because you are subscribed to a topic in the Google Groups "pXRF for Cultural Heritage" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/pxrf/Ipbm3ZA0Ho0/unsubscribe.
To unsubscribe from this group and all its topics, send an email to pxrf+uns...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/pxrf/CAEvfoRRTf6h6p2qzWgbYi3HfLqanH3BWZ5qiHqvk7mKWfdv3Dw%40mail.gmail.com.