Distinguish among angular unconformity, disconformity, and nonconformity

What will be an ideal response?


An unconformity represents a long period during which deposition ceased, erosion removed prevoiusly formed rocks, and then deposition resumed. All breaks in the rock record are termed unconformities. A disconformity refers to a an unconformity that occurs within horizontal sedimentary rocks: A series of sedimentary layers are formed and then exposed and undergo erosion. The sedimentary layers are then submerged, and additional layers form on top of the previously eroded area. The gap between the older and newer sedimentary rock layers is termed a disconformity. A nonconformity occurs when younger sedimentary strata overlie older metamorphic or intrusive igneous rocks that are exposed via uplift, undergo erosion, and subside, and then sedimentary layers form onto of the eroded area.

Environmental & Atmospheric Sciences

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The changes that occur during metamorphosis of a rock can change its texture but will never form new minerals

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Draw or verbally depict a cross-section of Earth from the center to the surface including all of its major components

Include important physical characteristics, such as the thickness of the layer, the nature of the rock, approximate temperature, density, and mineral types.

Environmental & Atmospheric Sciences

Which of the following is an example of a third order of relief?

A) the Alps B) the South American Plate C) IrazĂș Volcano D) the Tibetan Plateau

Environmental & Atmospheric Sciences

The time of day when the relative humidity reaches a maximum value is usually?

a. ?at the time when the air temperature is highest. b. ?in the middle of the afternoon. c. ?at the time when the air temperature is lowest. d. ?just before sunrise. e. ?about midnight.

Environmental & Atmospheric Sciences