Dating bricks

Posted by / 18-Sep-2017 13:50

Dating bricks

Sufficient water is available in virtually all terrestrial environments.

Neither systematic nor transient changes in humidity have an effect on long-term rehydroxylation kinetics, though they do affect instantaneous gravimetric measurements or introduce systematic error (i.e. The rate of rehydroxylation is affected by the ambient temperature.

Yet most archaeological material contains components which causes either addition mass gain or additional mass loss during the RHX measurement process.

These components can be an intrinsic part of the object, for example materials added as temper, or compounds which have become incorporated into the object during use, for example organic residues, or compounds which have entered into the object during burial or conservation.

Check whether there is a local historical society (look in the Exploring Norfolk’s Archaeology pack) or ask at your local library.

Libraries also often have a local history section containing copies of maps, archives and local history books.

The amount of water lost in the dehydration process (and thus the amount of water gained since the ceramic was created) is measured with a microbalance.

Sometimes there will be many records surviving for the building you are studying, sometimes none at all, and the likelihood of finding relevant material decreases the further back you go in time.The ELT is generally close to (but not exactly the same as) the long-term annual mean surface air temperature. Any event involving exposure to extreme heat may reset the "clock" by dehydroxylating the specimen, as though it were just out of the kiln.For example, a medieval brick examined by Wilson and collaborators The main application of the RHX technique is to date archaeological ceramics.You may be surprised by how much you can learn locally.Ask your neighbours if they know anything about the house.

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You may also be surprised at how time-consuming the research can be.