An unconformity refers to a type of geologic contact that occurs boundary between rocks. The main causes of Unconformities is erosion, wears away rocks and rock deposits never form. The most common cause of unconformity is erosion in which the younger rocks spread on older rocks with the passage of time. In Cardenas layer, erosion is also occurs that leads to unconformity in that region which leads to the formation of boundaries in the rocks.
In an oligarchy, a small group of people has all the power. There are two main types of autocracy: a monarchy and a dictatorship. An autocracy is a government in which one person has all the power.
A mid-ocean ridge separates the Pacific plate and the Nazca plate off the western coast of South America. Which statement best describes the relative motions of the Pacific and Nazca plates? The Pacific plate is moving to the east, and the Nazca plate is moving to the west.