Chapter 10 Visual Quiz For Geology

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Geologists refer to the contact between two units as an unconformity when it represents a period of no deposition, or possibly erosion. What type of unconformity is illustrated by the time sequence illustrated below? A. nonconformity B. disconformity C. lateral unconformity D. angular unconformity

A.

Using the geologic principles of relative dating, it is possible to tease apart rock outcrops and determine which are the oldest and the youngest beds in a sequence. In the cross-section below, identify the oldest bed in the sequence. A. 1 B. granite pluton C. 5 D. basalt dike

A.

Using the geologic principles of relative dating, it is possible to tease apart rock outcrops and determine which are the oldest and the youngest beds in a sequence. In the cross-section below, identify youngest event in the sequence. A. erosion of the land surface B. the basalt dike C. the granite pluton D. folding

A.

Block diagrams allow for geologists to render rock units in three dimensions. Features such as unconformities and folds will look different from different angles. What features are shown in the block diagram below? A. a fault and a nonconformity B. an anticline, syncline, and an angular unconformity C. a disconformity and a reverse fault D. a syncline and a nonconformity

B.

Examining stratigraphic sections from several different locations can determine, through stratigraphic correlation, the lateral extent of units. Which unit(s) are present in sections A and B, but not in section C? A. the Oswaldo Sandstone B. the Rufus and Mils Limestones C. the Emma Shale and the Hamilton Conglomerate D. the Santuit Sandstone

B.

The principle of fossil succession states that each fossil species has a distinct range, an interval of time when it lived. According to the image below, which statement BEST qualifies what we know about the range of fossil F. A. Fossil F is the oldest fossil in the sequence. B. The total range of fossil F is unknown because the outcrop ends. C. Fossil F's range is units 1-10. D. We cannot tell when fossil F first appeared in the rock sequence.

B.

The following image shows a stratigraphic section of the Grand Canyon. Between which two groups is there an angular unconformity? A. between the Kaibab Limestone and the Toroweap Formation B. between the Muav Limestone and the Bright Angel Shale C. between the Unkar Group and the Tapeats Sandstone D. between the Zoroaster granite and the Vishnu schist

C.

The principle of fossil succession states that each fossil species has a distinct range, an interval of time when it lived.. According to the image below, what is the range for fossil E? A. unit 6 B. units 1-10 C. units 6-8 D. units 3-6

C.

Geologists refer to the contact between two units as an unconformity when it represents a period of no deposition, or possibly erosion. What type of unconformity is illustrated by the time sequence illustrated below? A. nonconformity B. disconformity C. lateral unconformity D. angular unconformity

D.

The following map shows a hypothetical distribution of rocks around the world by geochronologic age. Based on this map and the geologic column, where are the representative Proterozoic rocks found?? A. South Africa B. Australia C. Central Asia D. Central North America

D.


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