According to the principle of cross-cutting relationships, if an igneous intrusion cuts across a layer of schist, the igneous intrusion is than the schist. a. older than b. more dense than c. the same geologic age as d. younger than

D. Younger than. The principle of cross-cutting relationships states that the geologic feature which cuts another is the younger of the two.

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor:

Ba rock that formed 1,400 million years ago!