OxCal

On Wednesday, October 1, 2025 at 4:43:53 PM UTC-7 Morley Eldridge wrote: The other sets of samples

Thank you for the clarification. On Wed, Oct 1, 2025, 12:09 AM 'Derek Hamilton' via OxCal

Hi Sarah, Those are both identical ways of coding that phase, but the multiple runs of the same code

Dear both The only caveat with this is that it assumes the offset is the same for the different

Span and interval are often similar: Span is the span of the events actually given in the model

This will be because in general OxCal takes astronomical year dates as the input. There is more

Hi Kelly – 1. You can do a single P_Sequence and change the ΔR midway (see code below). R_Dates will

Hi Chris As well as agreeing with everything that has been said, I think that Erik's point about

Dear John and Erik, Ok, now I had time to check out the model results. First, I ran V_Sequence models

Hi Chris – the Last command works as a query, not a prior. Instead, I would try making a sequence out

Thanks John, Yes, I think there must be some residuality here. Chris On Thursday, 31 July 2025 at 21:

Hi all, I'm a beginner using OxCal to model two sediment cores and I could really use some

Dear Xiannong, I've attempted to answer your questions below For my modern sample at 30 cm depth

i am running a age depth model and i want to estimate duration of each phase and sedimentation rate.

Many thanks – I found the previous discussion about this and Christophers spreadsheet. Fiona From:

Dear Fredrik and Christopher, thank you so much for your help! I've managed to do it :) Have a

It should be: Plot() { R_Date( "COW02",3030,60); Offset( 65, 0); }; Best wishes Christopher

Thanks Andrew. That matches with what I had suspected. I just wanted some more experienced input.

Hi Mike, difficulties with the Hallstatt plateau are the same with all calibration plateaus to

Hi Erik, Thanks so much for the quick reply and for the suggestions. What you mention is really

Dear Igor, The MCMC sampler will propose values from the whole range, but accepts them according to

Dear Christopher Thank you. That helped me so much. All the best Marie-Louise On Monday, May 19, 2025

Not a silly question at all. If you are showing these in a multi-plot (ie different KDE distributions

Dear Christopher, Thank you _very_ much! This is extremely helpful! And once again (I cannot say this

Dear Prof. Ramsey, Thank you very much for your kind and helpful reply. I will certainly look further

Dear All, I cannot run this simple model with success. I decided to use parameters just because of

Hello everyone, I would like to ask for some feedback regarding the processing of several C14 dates

Thank you very much for your clear explanation. I appreciate your time and support! Best regards,

Good morning Alex and Christopher: [Excuse me if this is a duplicate reply, I don't seem to be

Christopher- Thank you! Kate On Tuesday, April 1, 2025 at 11:41:52 AM UTC-7 Christopher Ramsey wrote: