Tuesday, October 30, 2007

Take Aim at the First Stab at a Correlation Diagram

NBMG recently hired a new chief cartographer with an extensive background in ArcGIS. As a consequence, our new approach to geodatabases is very comprehensive. I am climbing a relatively steep learning curve as I figure it out. One interesting aspect is that the new structure can pull a correlation diagram designed in excel (of all things!) right into a map layout. Any changes to labels and colors on the map are automatically updated in the correlation diagram.

Thus, instead of just mapping nonstop since we left Bend, I have been tackling the basic logistical issues associated with organizing the map data (see previous posts on unit labels and line types). So, today I tackled the correlation diagram. Please look this over and provide any comments you may have. Typically this type of chart evolves as the mapping progresses, but the first stab has to be decent. If you want to edit the spreadsheet directly, let me know and I will forward it. Note that I have added a chronological component to the landslide units. Not sure how easy it will be to divide, but decided the option was important to have.

Correlation Diagram of Late Cenozoic Geologic Units along the Owyhee River, Oregon

First draft, P.K. House, NBMG


  1. Kyle,

    This looks like a great start. Your remark about the chronologic component of landsliding made me think about whether we need some older landslide unit -- like QTls? Some of the landslides in Hole in the Ground could be latest Pliocene, right? For example, maybe the ones you and Lisa looked at on the south side of the river, with those big colluvium aprons on them?


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