The time footprint of 1 5 natural section mainly puts forward how rocks record time.
2. Part II
The natural section from 6 to 2 1 in Time Footprint is mainly put forward to record the time between stone layers.
3. Part III
Paragraphs 23 to 29 of Footprints of Time describe the historical traces left by rocks.
4. Part IV
The time footprint 30-3 1 natural section mainly describes the great significance of rock records.
Characteristics of works
The main task of Footprints of Time is to introduce the peculiar function of rocks to record time, aiming at explaining the significance of understanding this peculiar function of rocks and inspiring the enthusiasm of teenagers to explore the mysteries of nature.
The title of the article "Footprints of Time" is borrowed from Gao Shiqi's poem "Uncle Time". The use of personification vividly shows the traces of time hidden in rocks of various shapes and sizes, so as to arouse people's desire for exploration and interest in reading.
After reading it, it not only increases the reader's knowledge, but also helps the underground secrets. For example, there are many iron deposits in the ancient land blocks formed before CAMBRIAN; During the Carboniferous, many coal mines were created. If we are familiar with the history of these stones, it is possible to follow the footsteps of history and step by step to the underground treasure house.