Intervals tab

Interval data stores data to a specific depth interval that doesn’t fit well with the traditional zone concept, such as data that is too fine (such as core descriptions) or too coarse (such as mud weights or biostratigraphic information) to fit inside two formation tops.

Petra stores interval data in tables and fields similar to a spreadsheet.  The “table” stores related interval data in a spreadsheet, where each interval is stored as a separated row.  In the example below, the project has the default tables LITH, CORE, and PALEO.

Inside the table, each interval is stored as its own row, and information about that interval is stored in “fields”, or columns in that row.   All tables come with a few fields, TOP, BASE, DATE1, DATE2, QUALITY, and FMNAME, but you can add user-defined fields containing numbers, dates, or text. In addition to the standard fields, the LITH table in the example below contains the field “Desc” which stores lithologic descriptions.

 

Creating, Modifying and Deleting tables

Creating, Modifying and Deleting Fields

Reordering tables & Fields

Adding Interval Data

Changing Interval Attributes, Markers, and Patters

Find/Change Data...

Using Interval Filters

Storing Interval Thickness to an Interval

Gaps, Overlapping Interval Data, and Bulk Shifts

Calculations with Interval Data

Graphing Interval Data

Setting Default tables and Fields