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Cape Fear Community College *
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111
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Geology
Date
Apr 3, 2024
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Uploaded by LieutenantEelMaster1100
3of4 NEXT PAGE Structural Geology - Part II - Geologic Mapping The following questions pertain to the geologic map and its stratigraphic column/legend. The geologic map has been turned 90 degrees in order for a better fit and larger size, so the geologic lettering on the map is vertical. The lettering/text on the geologic column/legend is oriented correctly. Most of the answers to these questions can be found using the PowerPoint lecture in the Course folder. Also, there are three videos in the Course folder week 10 folder on help in identifying folds and faults. Check them out! 1 2. 3. 5. 9. 10. B Gg?lpgquPT . = MNSE 1 poemngbey e Using the Stratigraphic column/legend, what is the youngest formation on the geologic map? Using the Stratigraphic column/legend, what is the oldest formation on the geologic map? From the Stratigraphic column/legend, there are several successive formations consisting mainly of dolomite. How would a field geologist find the contact (boundary between two formations) between the Longview Dolomite and Kingsport Formation? From the geologic column/legend, what do the members of the Knox Group have in common? On the Stratigraphic column/legend is the Knox Group, considered one unit having mostly the same rock type. What rock formations form the contact above and below the Knox Group (Use the geologic column/legend)? The Stratigraphic column/legend shows the rock units that are located on the geologic map. The symbol for each formation begins with a capital letter. What is the source of this letter (Use the PowerPoint file on Geologic Mapping Lecture)) What geologic period(s) is/are represented on the geologic map (Use the PowerPoint lecture on Geologic Mapping) Folds can be determined by the dip of limbs (shown by the dip symbol) or age of rock layers. For these questions, we will use age of rock (See slide 12 on the PowerPoint file Geologic Mapping Lecture). Near the letter "A" on the geologic map, find the abbreviation for that formation (It is just to the right of "A”). e Matching that abbreviation to the same abbreviation on the geologic column/legend, what formation is "A" occupying? e Isthe formation located at "A" younger or older than the surrounding formations (Some are circled - See where they fall on the stratigraphic column/legend) o Based on the order of ages of the geologic formations, what type of fold is present at “A?>" Near the letter "B” on the geologic map, find the abbreviation for that formation (It is just to the left of "B") * Matching that abbreviation to the same abbreivation on the geologic column/legend, what formation is "B* occupying? e Isthe formation located at "B” younger or older than the surrounding formations (Some are circled - See where they fall on the stratigraphic column/legend) ¢ Based on the order of ages of the geologic formations, what type of fold is present at "B?" There is a geologic cross section located below the geologic map at the bottom of the page. A cross section is a slice of the subsurface. There is a fault highlighted in a bold black line and labeled “Fault.” What type of fault is shown there (hint: This fault has vertical displacement)? Stratigraphic column/Legend oy Oou . - TN e 4 ' N - —— :}-7 “ = IR Z B ~Tm A G NP~ v N \\ S Ottosee shale : \ % \ u g N ety » N Hulstwon limeestone
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