Figure 3.14 is a sketch of lava flows in the Columbia Plateau region of northwestern United States. What do the flows indicate about the viscosity and composition of the lava?
Answer to relevant QuestionsNote the map of major igneous rock bodies along western North America (Fig. 3.15). Name the type of igneous bodies shown, and name the likely dominant rock type present.What minerals commonly fill vesicles to form amygdules as in Fig. 3.10?Why is mechanical weathering so important to chemical weathering?Give a generalized chemical equation that illustrates the effect of carbonation on limestone, the common sedimentary rock made of the mineral calcite (CaCO3).Which rock should be most resistant to chemical weathering—gabbro or granite?
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