Sense check on model

[Chris Chinnock (Chris)]

Hi all, 

Ive got a set of dates from a post med possible retting pit. I have two dates one from each of the first two fills, and then 7 samples were taken from an organic rich layer that possibly marks the end of us of the pit. I have put them together in a sequence reflecting their stratigraphic relationship. However, I wasnt sure whether to 'Combine' the samples from the single context on the assumption that they are broadly contemporary. They are all very small diameter twigs. In the code below I have put them together as a Phase instead, which I think might be more appropriate.

The modelled dates do seem to indicate a much stronger 17th-18th century signature, which aligns well with some of the information weve been given from the botanical specialist ont he retting pit theory.

I just want to be sure I've built the model correctly.

Cheers

Chris

 Plot()
 {
  Sequence("Pit 499")
  {
   Boundary("Start");
   R_Date("Beta - 705777 (576)",110,30);
   R_Date("Beta - 705778 (654)",150,30);
   Phase("Layer 501")
   {
    R_Date("Beta - 705770 <34>",190,30);
    R_Date("Beta - 705771 <32>",140,30);
    R_Date("Beta - 705772 <35>",130,30);
    R_Date("Beta - 705773 <37>",160,30);
    R_Date("Beta - 705774 <40>",130,30);
    R_Date("Beta - 705775 <41>",160,30);
    R_Date("Beta - 705776 <43>",220,30);
   };
   Boundary("End");
  };
 };

[Bayliss, Alex]

Hi Chris,

 

Yes, this looks sensible. I don’t think you know that the samples from the upper layer actually come for one event rather than a period of time (be it probably rather short), so I think the phase model is probably more appropriate here.

 

Best wishes,

 

Alex

 

Work with us to champion heritage and improve lives. Read our Future Strategy and get involved at ​​​​historicengland.org.uk/strategy. Follow us:  Facebook  |  Twitter  |  Instagram     Sign up to our newsletter      This e-mail (and any attachments) is confidential and may contain personal views which are not the views of Historic England unless specifically stated. If you have received it in error, please delete it from your system and notify the sender immediately. Do not use, copy or disclose the information in any way nor act in reliance on it. Any information sent to Historic England may become publicly available. We respect your privacy and the use of your information. Please read our full privacy policy for more information.

From: 'Chris Chinnock (Chris)' via OxCal <ox...@googlegroups.com>
Sent: 12 September 2024 18:42
To: OxCal <ox...@googlegroups.com>
Subject: Sense check on model

 

-- WARNING: This is an external message. Please use caution when replying, opening attachments or clicking on any links in this e-mail.--

 

--
You received this message because you are subscribed to the Google Groups "OxCal" group.
To unsubscribe from this group and stop receiving emails from it, send an email to oxcal+un...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/oxcal/ae85ebb0-4397-4ca3-90f5-fbb47a524bd0n%40googlegroups.com.