Why is it so difficult for scientist to determine how the Jalisco block is moving

Tectonic and stress map of Jalisco block and its boundaries. ... positions by scientists worldwide, regardless of their race, citizenship, gender, ... Pliocene-Quaternary extension along the northern boundary as an ... cade, the complex tectonics of western Mex- ... 1996) propose a SW relative movement.

Explanation:

answer; seasons change because earth tilts on its axis; and the angle of the tilt causes the northern and southern hemisphere to trade places throughout the year;

answergeosphere;