The geological record is the history of the Earth as recorded in its rocks. The record begins with the earliest rocks, which were formed about 4 billion years ago. It ends with the most recent rocks, which are still being formed today.
The geological record is divided into three parts: the primary rock record, the secondary rock record, and the tertiary rock record. The primary rock record consists of the oldest rocks on Earth, which were formed during the first two billion years of Earth’s history. The secondary rock record consists of rocks that were formed during the last two billion years of Earth’s history. The tertiary rock record consists of rocks that are currently being formed.
The primary rock record contains some of the most important information about Earth’s history. For example, it includes information about how Earth’s continents have changed over time. It also includes information about how life has evolved on Earth.
The secondary rock record is not as complete as the primary rock record, but it still contains a lot of important information. For example, it includes information about how mountain ranges have been built up over time. It also includes information about major events in Earth’s history, such as mass extinctions and meteor impacts.
The tertiary rockrecord is very new and is not yet well understood. However, it already contains some important information about Earth’s history. For example, it includes information about how humans are affecting the planet today and how climate change is affecting our world