Please help me with geology!!?

4. Which one of the following is true for anticlines but not for synclines?











a. The limbs dip or are inclined towards the fold axis.





b. Some may be asymmetric and some may have plunging axes.





c. The deeper strata are buckled upward along the fold axis.





d. After erosion, the younger strata are exposed along the axial region of the fold.








5. A deeply eroded, structural basin would exhibit ________.











a. outcrops of the oldest strata in the center of the basin





b. strata oriented in roughly circular, outcrop patterns





c. strata dipping outward away from the center of the basin





d. older strata at the edges of a basin dip away from a central, horizontal, fold axis








12. The Navajo and Dakota Sandstones are ________.











a. marine limestone formations in the central Appalachian region





b. Mesozoic, sedimentary rock formations in Utah, Colorado, and neighboring states





c. prominent, lower Paleozoic strata in the British Isles and northern France





d. quartz-rich, granite batholiths in the Sierra Nevada range, California








13. A ________ is a defined, recognizable, mappable, rock unit with a known age.











a. strata set





b. lithologic sequence





c. formation





d. stratigraphic section|||4. Which one of the following is true for anticlines but not for synclines?


c. The deeper strata are buckled upward along the fold axis.





5. A deeply eroded, structural basin would exhibit ________.


c. strata dipping outward away from the centre of the basin





12. The Navajo and Dakota Sandstones are ________.


b. Mesozoic, sedimentary rock formations in Utah, Colorado, and neighbouring states





13. A ________ is a defined, recognisable, mappable, rock unit with a known age.


c. formation