Study the provided geologic cross section and answer the following questions: A) Using the principle of cross-cutting relationships, determine the relative ages of the igneous pluton (unit A) and the igneous sill (unit C) and unit M (sandstone). Explain your reasoning. (2 points) B) The contact between unit N (siltstone) and underlying units appears distinctive. Identify the type of unconformity present and explain what this contact relationship suggests about the region’s geological history. (2 points) C) Fault H has affected units E, G, L, and C (sill). Determine which type of fault this is and explain how these rock layers were affected by the faulting event. What type of stress regime would create such a fault pattern? (2 points) D) The yellow limestone unit J appears to be affected by the igneous pluton (unit A). Explain the geological process that caused this and and describe the sequence of events that led to this change. (2 points) E) Based on the cross section, put the following events in chronological order from oldest to youngest: (2 points) Deposition of unit J (limestone) Intrusion of unit A (red igneous pluton) Intrusion of unit C (igneous sill) Movement along fault H Deposition of unit N (siltstone) Support your answers with specific evidence from the cross section, including rock types where relevant. Be sure to use appropriate geological terminology in your responses.
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