If you observe a disconformity, you would infer that the region had experienced ________
A) deposition of sedimentary layers on crystalline igneous or metamorphic rocks that are exposed at the surface of the earth.
B) uplift and tilting of sedimentary units that exposes them to erosion over a period of time with subsequent renewed deposition
C) intrusion of igneous rocks into a depositional setting, forcing the sedimentary layers upward and possibly deforming them, followed by subsidence of the remaining sedimentary layers and renewed deposition
D) deposition in shallow water, uplift or lowering of sea level enough to expose the rocks to erosion and non-deposition for a period of time, and subsequent resubmergence of the remaining sedimentary units where they experience new deposition
D
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Dew PointFor the following questions refer to the temperature and dew point data in the following cities: CityAir Temperature (ºC)Dew Point (ºC)City A3524City B-12-12City C-1-6City D106In a blinding snowstorm in Whitehorse, the air temperature and dew point temperature are both -1ºC. Meanwhile, under clear skies in Toronto, the air temperature is 29ºC and the dew point temperature is 3ºC. Which of the following can be concluded from this information?
A. Whitehorse and Toronto are both located next to the ocean. B. The same amount of water vapour is found in the air in Toronto and Whitehorse. C. There is more water vapour in the air in Toronto. D. There is more water vapour in the Whitehorse snowstorm.
A mineral is light colored, transparent, has a hardness of seven, and fractures rather than cleaves. What minerals is it?
A. biotite B. muscovite C. garnet D. quartz E. feldspar
How did the underlying geology contribute to the Gros Ventre Landslide of 1925?
A) Rains saturated the sandstone and clay that make up the slope. B) Creep weakened the sandstone making up the slope. C) Vegetation was removed from the slope. D) The river that flowed through the valley dissolved the limestone.
________ is the process in which saltwater introduces cations causing the particles of silt and clay to clump together and settle, thus clearing the water around the edges of saline lakes
A) Deposition B) Sapping C) Flocculation D) Saltation E) Traction