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WorksheetsUnconformity
Total questions: 10
Worksheet time: 20mins
What is the name of the ancient landmass that joined all our present continents 250 million years ago?
Permian
Pangaea
In the diagram, what does the layer indicated by the arrows represent?
a fault (a break in the rock)
an erosion surface that has since been covered by new layers (an unconformity)
a very thin sedimentary layer
an igneous intrusion
Which of the following most accurately describes uplift?
Uplift sinks the land down, causing it to be covered with water.
Uplift results in large amounts of sediment being deposited on top of the uplifted area.
Uplift raises the land up, causing it be eroded by gravity, water, wind, and ice.
Rocks are laid down in horizontal layers.
Original Horizontality
Unconformity
Superposition
Uniformitarianism
Cross-Cutting
Gap in the rock record caused by erosion and deformation.
Original Horizontality
Unconformity
Superposition
Uniformitarianism
Cross-Cutting
What is the process of moving sediments from location to another?
Deposition
Erosion
Weathering
Compaction
This is when geologists match rocks and fossils from separate locations.
correlation
key beds
unconformity
uniformity
