"As an indicator of the ‘geologic turn’ under way in the arts, social sciences and humanities, New York’s Smudge Studio have published a guidebook illustrating how the city is a geologic force of truly global importance within the contemporary Anthropocene period."

What does the emphasized phrase mean exactly? Does that mean "a force that has global importance"?


Yes, and even more so. Likening those changes in arts, social sciences and humanities to "geologic" forces is an exaggerated way of portraying them as being of huge historical importance.