Chapter 1. Geologic Record

Map Learning Exercises

Geologic Record: Unconformities

Question Click on a unconformity.

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{"title":"selection","description":"","type":"correct","color":"#333300","code":"[{\"shape\":\"poly\",\"coords\":\"281,105,280,135,211,152,57,71,38,52,25,74,27,35,33,30,64,52,214,127\"},{\"shape\":\"poly\",\"coords\":\"30,173,24,197,73,188,173,196,221,171,278,172,282,144,216,153,171,172,67,170\"},{\"shape\":\"poly\",\"coords\":\"31,225,28,256,49,242,93,280,137,292,176,308,194,328,219,336,281,288,279,258,221,308,194,286,113,265,48,214\"}]"} {"title":"Choice label","description":"Unconformities form at erosion surfaces, but they are a feature seen in rocks, not at the surface.","type":"incorrect","color":"#993300","code":"[{\"shape\":\"poly\",\"coords\":\"38,26,97,66,218,116,284,88,279,72,158,40,86,-3\"}]"} {"title":"Choice label","description":"The slightly deformed sedimentary rocks in this unit are conformable with each other.","type":"incorrect","color":"#33cccc","code":"[{\"shape\":\"poly\",\"coords\":\"29,75,29,171,176,168,215,153,277,144,278,133,218,146,51,70,37,49\"},{\"shape\":\"poly\",\"coords\":\"278,259,221,299,189,279,114,260,43,205,28,229,22,196,72,188,176,196,221,170,280,174\"}]"} {"title":"Choice label","description":"The sedimentary rocks here are in sequence and conformable with each other.","type":"incorrect","color":"#99cc00","code":"[{\"shape\":\"poly\",\"coords\":\"279,88,277,102,211,123,108,70,57,51,38,31,49,31,78,52,131,77,172,84,213,107\"}]"} {"title":"Choice label","description":"This line is an artifact of the diagram where the vertical scale changes.","type":"incorrect","color":"#666699","code":"[{\"shape\":\"poly\",\"coords\":\"278,285,269,300,216,344,23,270,31,250,218,332\"}]"}
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