You Observe a Distinct, Red Sandstone Rock Body About 50

question 17

Multiple Choice

You observe a distinct, red sandstone rock body about 50 m thick that is depositionally overlain by a red shale with interbedded gypsum and you follow this boundary in the rock bodies for 1 km until you cross a fault which has displaced the boundary between the two rock bodies. You walk along the fault and see a boundary between a 50 m thick red sandstone and overlying red shale interbedded with gypsum. You conclude______ .

• A) the second exposure of sandstone, shale and gypsum correlates to the first, and the boundary between the sandstone and shale is the same stratigraphic horizon
• B) this new exposure of sandstone, shale and gypsum must be a different age rock unit
• C) the stratigraphic section must have been inverted by the deformation; the rocks are upside down
• D) this is impossibly complex; the fault broke up all the rocks

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Definitions:

Body Language

Nonverbal communication involving body movement and gestures, which are often unconsciously transmitted and interpreted.

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