dike granite ash Sedimentary rocks D Mudstone C Sandstone Igneous rocks BLimesto
ID: 290939 • Letter: D
Question
dike granite ash Sedimentary rocks D Mudstone C Sandstone Igneous rocks BLimestone Dike Granite pluton Ash layer A Chalk unconformity ^ contact MM Fia 6 4 Place the formations and geologic events at SITE A in order from oldest to youngest (oldest event at the top) 1. A: Deposition of chalk in ocean 2. B: Deposition of limestone in ocean+ 3. 4 5. Tectonic activity causes uplift Choose.. D: Deposition of mustone Intrusion of dike B: Deposition of limestone in ocean Erosion of D, C, B by river Ash layer deposited by volcanic activity Erosion of surface creates unconformity C: Deposition of sandstone Intrusion of granite pluton 7. 9. Tectonic activity/uplift 10. Erosion of surface causes unconformity Intrusion of dike 12: D: Deposition of mustoneExplanation / Answer
The following is written as oldest to youngest geological events:
Depostion of A, chalk layer.
Formation of ash bed.
Deposition of B, limestone layer.
Intrusion of granite pluton ( containing enclaves of the country rock)
Unconformity (period of non deposition and erosion)
Conglomerate layers (fragments of granite pluton) signifying unconformity.
Depostion of sandstone bed.
Intrusion of dike.
Unconformity (period of non-deposition and erosion)
Depostion of mud stones.
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