Which of the formations has the most prominent topographic expression as indicat

Question

Which of the formations has the most prominent topographic expression as indicated by the contour lines on the map? 4. GEOLOGIC MAP OF THE ATHENS QUADRANGLE, TENNESSEE The geologic map of Colorplate I and the accompanying explanation and structure section of Colorplates 2 and 3 are reproduced from a quadrangle map published by the U.S. Geological Survey. These colorplates are located at the end of Chapeer 14. Colorplate I is about one-fourth of the original map. Geologic maps of this sort represent the most basic data about the earth, and are therefore well worth learning about. For ease in answering some of the following questions, cut out the structural cross section and align it 5. In reading the description of this formation, can you scern any reason for its prominence? along the line A A'(found on Coloeplate 3). The stratigraphic units represented by boxes in the expla nation of Colorplate 2 are formations. The first, or geographic, part of the formation name comes from a locality where it is well exposed, and the second part is either a rock type or the word Formation."Since this map was published, it has become cus- tomary always to capitalire the second word. Notice also the term "Knox Group." which includes several formations. Which of the formations stands at the lowest altitudes on the map? From its description, can you discern any reason for this? 6. Study Questions 1. Several successive formations consist mainly of dolomite. How did the field geologist find the contact between the Longview Dolomite and the Kingsport Formation? 7. How are contact lines distinguished from fault lines on the map? 2. What do the members of the Knox Group have in common? If the group is considered as a unit, how does it differ from the rocks below and above? If the structure section was not available, in what two different ways could you identify the large fold in the center of the map as an anticline? 8. 3. The symbol for each formation begins with a capital letter. What is the source of this letter? Geologic Maps and Geologic Structures

Explanation / Answer

1 by moving along the dip direction we can find the contact between longview dolomite and kingsview formation.dip section is perpendicular to strike section.

2 knox group have their lithology in common.

3 The letter or the name are derived from the place or captial where the formation is present.

4 5 and 6 no questions have inadequate information given.

7 To distinguish between fault line and contact line we can see where the fault line terminates there is sharp change in contact of lithology along the cross section but inlithological contact there is no sharp chnage in boundary.

8 If structural section is not available we can know it as an anticline by marking the elevation data i.e its contour value by joining countour value of equal elevations we can get to define the structure i.e here anticline.

9 10 and 11 12 13 14 no questions have no structural map shown here.

15. since faults are involved the area is highly tectonically unstable.

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