implementing hiatuses

[Teun Fiers]

Dear mr Ramsey and others,

I am constructing a age-distance model of beach ridges in which a hiatus (erosion period) is known on the basis of measurements other than dates. I would like to implement this hiatus into my model in order to estimate the hiatus duration (see picture). Is this possible in Oxcal? What commands should I use in order to achieve this?

Kind regards,

Teun Fiers

Bsc Student Wageningen University (thesis on age-distance models)

[MILLARD A.R.]

Assuming you are using the age-depth models to do this, you can simply put boundaries in at the point of the hiatus with a structure like this:

Sequence()
{
P_Sequence()
{
Boundary();
... dates here with z= statements
Boundary("start hiatus"){z=z_hiatus};
};
P_Sequence()
{
Boundary("end hiatus"){z=z_hiatus };
... dates here with z= statements
Boundary();
};
};


Insert your observed distance for z_hiatus

Best wishes

Andrew
--
 Dr. Andrew Millard 
e: A.R.M...@durham.ac.uk | t: +44 191 334 1147
 w: http://www.dur.ac.uk/archaeology/staff/?id=160
 Senior Lecturer in Archaeology, Durham University, UK

> -----Original Message-----
> From: ox...@googlegroups.com [mailto:ox...@googlegroups.com] On Behalf
> Of Teun Fiers
> Sent: 05 January 2015 11:03
> To: ox...@googlegroups.com
> Subject: implementing hiatuses
>
> Dear mr Ramsey and others,
>
> I am constructing a age-distance model of beach ridges in which a hiatus
> (erosion period) is known on the basis of measurements other than dates.
> I would like to implement this hiatus into my model in order to estimate
> the hiatus duration (see picture). Is this possible in Oxcal? What
> commands should I use in order to achieve this?
>
>

> <https://lh4.googleusercontent.com/-
> v5QCY5MgE08/VKpu3tBn2OI/AAAAAAAAAAk/2joHgUM9iWo/s1600/pictureforum.png>

>
> Kind regards,
>
> Teun Fiers
> Bsc Student Wageningen University (thesis on age-distance models)
>

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[Christopher Ramsey]

Yes - and if you want to find the interval between the two this should work:

Sequence()
{
P_Sequence()
{
Boundary();
... dates here with z= statements
Boundary("start hiatus"){z=z_hiatus};
};

Interval("hiatus period");

P_Sequence()
{
Boundary("end hiatus"){z=z_hiatus };
... dates here with z= statements
Boundary();
};
};

Best wishes

Christopher