29. Which of the following does NOT explain whether or not volcanoes erupt violently?  

46. Impurities (such as Pyrite or Clay mineral) in the coal create ______________  

41.Dissolution, Hydrolysis and ________________are chemical weatherings  

50. Cross-beds form by the movement of sediment dunes and ripples by wind or water.

32. Most likely Sulfide ores form as ————————–  

2. Calderas also form when pyroclast deposits at the summit of the volcano puts weight on to emptied magmatic chamber below causing summit to collapse and caldera to form.

38. Which of the igneous rock below formed from sticky, plastic and squashed hot ash and lapilli mixture?    

45. Which of the following below is NOT an Evaporite? (recall this was also in test 1)  

5. Which of the following mineral below does melt the last (requires high temp to melt)?  

25. During transgression of the sea, sea level ________________