List of top Geology Questions on Petrology

Four vertical boreholes are drilled on a flat topography at 50 m intervals along the east-west direction. The boreholes intersect a coal seam at depths of 100 m, 130 m, 160 m and 190 m. The true dip of the coal seam, in degree, is ...............(Round off to two decimal places)

Consider a perfect Geocentric Axial Dipole model for the geomagnetic field. At a latitude of 30°N, the inclination of a freely suspended magnetic needle, in degree, is ............ (Round off to the nearest integer)

The figure shows the \(^{14}C\) activity with depth in a sediment core from a lake, where the sedimentation rate was uniform. The maximum \(^{14}C\) activity, marking the signature of bomb carbon, was measured at a depth of 45 cm. The rate of sedimentation is ............... mm/year (In integer).

Correct Answer: 0.53
Solution:

The figure depicts stability fields of minerals P and Q. Which one of the following statements is INCORRECT?

Choose the correct statement(s) related to different aspects of volcanism.

Match the magma series in Column 1 to the geological settings in Column 2.

Which one of the following rock combinations is characteristic of volcanic arcs?