15.2: Activity 15A - Reading and Interpreting geologic Map Symbology
- Page ID
- 14575
\( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)
1. Why do geologists take strike and dip measurements?
2. What tools are used, in the field & in the lab, to measure strike and dip?
3. Define the following terms:
a. Strike:
b. Dip:
4. Label the 3 parts of the following map symbol:
Figure 15.23: Figure for Question 4 in Part 15A.
5. Interpret each strike & dip symbol in Figure 15.24. Assume north is to the top of the page. Use the format: strike, dip angle, dip direction. See the example for how to write this successfully.
6. Name the geologic structure indicated by each of the following map symbols:
Attributions
- Figure 15.23: “Strike and Dip Practice” (CC-BY; Chloe Branciforte, own work)
- Figure 15.24: “Strike and Dip Practice” (CC-BY; Chloe Branciforte, own work)
- Figure 15.25: “Fold Symbols” (CC-BY; Chloe Branciforte, own work)