</code></strong> :&ensp;<code>bool</code>, default <code>= True</code></dt>
<dd>Whether to log results to log file</dd>
</dl>
<h2 id="returns">Returns</h2>
<dl>
<dt><strong><code>df</code></strong> :&ensp;<code>pandas.DataFrame</code></dt>
<dd>Dataframe containing intervals classified as bedrock due to depth</dd>
</dl></div>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def depth_define(df, top_col=&#39;TOP&#39;, thresh=550.0, verbose=False, log=Fals