Microsoft PowerPoint - aat_in_depth.pptx

5/4/2019

copyright J.Paul Getty Trust

Introduction to the AAT

revised May 2019 For educational purposes

Scope Note

Topics may include the following:

Travertine fragment, image from Wikipedia. Details of Walls of the Getty Center, Los Angeles, image: http://www.getty.edu; 6



The

usage

of the descriptor, alternate descriptors,

and used for terms in the record



The

meaning and context

of the descriptor and

other terms in the record



Distinguishing between terms

that are in

different records and have overlapping meanings or that may otherwise be confused by users

For

travertine

Note:

A dense, crystalline or micr

ocrystalline limestone that

was formed by the evaporation of river or spring waters. It is named after Tivoli, Italy ("Tibur" in Latin), where large deposits occur, and it is chara

cterized by a light color and the

ability to take a good polish. It is typically banded, due to the presence of iron compounds or other organic impurities. It is often used for walls and interior decorations in public buildings. It is distinguished from "tufa" by being harder and stronger.

Patricia Harpring © 2019 J. Paul Getty Trust. For educational purposes only. Do not distribute.