How are geologic events placed in relative order?

What will be an ideal response?


Answer: The principle of superposition states that when rocks form at Earth's surface in layers, the lowest layer formed first and each successively higher layer is younger than the one below. The principle of original horizontality states that sedimentary layers are horizontal, or nearly so, when they are deposited. Non-horizontal layering indicates disruption of the beds at some time after deposition. The principle of cross-cutting relationships states that geologic features, such as dikes and faults, that cut across otherwise continuous rocks formed after the rocks that they cut across. The principle of inclusions states that objects enclosed by rock formed prior to inclusion within the rock.

Environmental & Atmospheric Sciences

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Which country is the world's largest producer of solid waste?

A. United States B. China C. Russia D. India E. Brazil

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This seismic hazards deals with the vibrations caused by earthquakes.

This seismic hazards deals with the vibrations caused by earthquakes.

  • After shocks
  • Ground shaking
  • Landslides
  • Liquefaction
  • Tsunami

Environmental & Atmospheric Sciences

Why does hematite cause the rusty red color observed in many surface rocks?

A) Hematite is a carbon-oxide, giving rocks the red color (even if in small amounts). B) Hematite contains pyrite, giving rocks the red color (even if in small amounts). C) Hematite is an iron-oxide, giving rocks the red color (even if in small amounts). D) Carbonic acid weathers hematite, giving rocks the red color (even if in small amounts).

Environmental & Atmospheric Sciences

The maximum diameter of a water particle orbit of a deep water wave is defined by wave ________.

A. height B. speed C. steepness D. length E. period

Environmental & Atmospheric Sciences