Overview

ArcMapÂ(R) style files (.style extension) can be used to standardize map symbolization. This report describes the methods used to create several styles for lithology or geologic time. The styles are color fills which were created by assigning RGB color values to attributes of polygon shapefiles. The terms symbolized were either generated from terminology hierarchies from various sources or digitized from scanned images of existing legends. For large lithology lists, a table format was used as a convenient method for experimenting with shades of color as well as for documenting the RGB color values. Examples of styles were adapted or created from the following legends: the International Stratigraphic Chart (ISC) and the USGS Color Code version of the ISC; the Decade of North American Geology (DNAG-1983 Geologic Time Scale); the North American Geologic Map Data Model version 4.3 (specifically lithclass 4.3 and its successors lithclass 6.1 and lithclass 6.2); and the State Geologic Map Compilation (SGMC). The digital package consists of ArcMapÂ(R) styles, and MicrosoftÂ(R) Excel color documentation tables. The software used includes Environmental Systems Research Institute (ESRIÂ(R)) ArcGISÂ(R) version 9 (ArcMapÂ(R) module) and MicrosoftÂ(R) Excel 2003. Other software tools used in preparing the files were Pixie color-picker, and the Science Language Interface Module. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

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