Issue 301: Scope note of A2 Stratigraphic Volume Unit

Starting Date: 
2016-07-29
Working Group: 
3
Status: 
Done
Closing Date: 
2016-08-01
Background: 

The ArSol mappings to CIDOC CRM extensions point out the need for reviewing the scope note of the A2 Stratigraphic Volume Unit(version 1.4.1). The scope note should be changed since it includes part of  the definition of A8 Stratigraphic Unit.

The proposal is 

FROM

Subclass of:  A8 Stratigraphic Unit

Scope Note:  This class comprises connected portions of terrain or other solid structure on, in, or under the surface of earth or seafloor exhibiting some homogeneity of structure or substance and completely bounded by surfaces or discontinuities in substance or structure with respect to other portions of the terrain or surfaces of objects/finds.
An instance of A8 Stratigraphic Unit may contain physical objects.
The internal continuity and the boundaries of an instance of A8 Stratigraphic Unit should  be of a kind that can be attributed to a single genesis event or process and have the potential to be observed.
One genesis event may have created more than one SU.
An instance of A8 Stratigraphic Unit is regarded to exist as long as a part of its matter is still in place with respect to a surrounding reference space such that its spatial features can be associated with effects of the genesis process of interest. Normally at least one of the surfaces (such as the lower one) from its genesis event will remain during its existence.
This also implies that a certain degree of coherent (“conformal”) deformation is tolerable within its time-span of existence. Therefore the place an instance of A8 Stratigraphic Unit occupies can be uniquely identified with respect to the surrounding reference space of archaeological interest.
Examples:
The stratigraphic deposit unit number (2) of Figure 5 representing the filling of a post hole

TO:

This class comprises connected portions of terrain or other solid structure on, in, or under the surface of earth or seafloor exhibiting some homogeneity of structure or substance and completely bounded by surfaces or discontinuities in substance or structure with respect to other portions of the terrain or surfaces of objects/finds.
 

Lida Charami, Heraklio  29 July 2016

Outcome: 

The 36th joined meeting of the CIDOC CRM SIG and ISO/TC46/SC4/WG9 and the 29th FRBR - CIDOC CRM Harmonization meeting, the crm-sig reviewed the proposed scope note for A2 Stratigraphic Volume Unit. The resulted one is the following:

"This class comprises instances of A8 Stratigraphic Unit which are connected portions of terrain or other solid structure on, in, or under the surface of earth or seafloor exhibiting some homogeneity of structure or substance and which are completely bounded by surfaces or discontinuities in substance or structure with respect to other portions of the terrain or surfaces of objects or finds.

Normally at least one of the surfaces, i.e. instances of A3 Stratigraphic Interface (such as the lower one), from the genesis event of the A2 Stratigraphic Volume Unit will remain during its existence.
An instance of A2 Stratigraphic Volume Unit may contain physical objects."

The change will be incorporated in the new edition of CRMarchaeo 1.4.2

The issue is closed.

Heraklio 1/4/2016