The first article: wonderful stones
One Sunday two years ago, I was bored at home. Father said there was a place that was particularly interesting and asked me if I wanted to go. I agreed.
When we got there, it turned out to be a stream. I like digging the soil on the shore best, because I can dig with a small hoe and shovel? Canal? And let the water flow alluvial to the exit to form sand? Man-made delta . When I dug about 20 cm deep, I suddenly came across a hard thing, I guess it was an ordinary stone, so I dug up the soil next to it and prepared to dig it out, but I dug a deep pit and the stone hasn't come out yet. I'm tired, so I just sit by and have a rest. At this time, the water in the canal slowly became clear, and I suddenly saw what I had just dug. Stone? It's white. Oh! Some people don't care about the environment, so they throw China into the water. I'm interested again. I kept digging for about half an hour and finally dug it out. I shoveled it again with a small shovel. At this time, I was surprised to let out a cry and found that it was not porcelain. Dad came over and told me it was a piece? Platinum stone? !
This stone is the size of a fist and consists of two different layers of stones. The lower layer is plain and khaki. The upper layer is milky white, and there are countless flakes on the surface? Platinum? , shining in the sun. Look down? Platinum stone? The upper level is uneven, like the tertiary ice age in comics, with rolling icebergs rising on both sides; The ditch in the middle is a mysterious canyon. Alpine canyons, ice and snow all shine with the light of ice crystals.
After playing for a long time, I thought it was a rare treasure, so I treasured it today.
Chapter II: Rain Flower Stone
There are many wonderful stones in the world. Let me introduce some to you!
In the opaque cave, there are colorful stones with different shapes. Some of them are hung upside down in the air like rain clouds, and some are like jade pillars vertically from the ceiling to the ground, which is very spectacular. These stones are stalactites because these caves are limestone. When water containing carbon dioxide penetrates into caves, it will dissolve calcium carbonate in caves, and then it will take tens of thousands or hundreds of thousands of years to form stalactites. Stalactites are of great research value for ancient geological survey.
Generally speaking, when it comes to rain flower stones, people will think of Yuhuatai in Nanjing. Rain flower stone is a unique stone in Nanjing. Is it a stone? Flowers? Famous far and wide, the corolla is rainy and dew, beautiful and charming. Rain flower stone is actually a kind of natural fossil, with four colors of yellow, red, green and white, irregular oval shape, extremely high hardness and heavy weight.
Reef refers to the marine erosion residue higher than the marine erosion platform. Due to the continuous erosion and destruction of coastal bedrock by waves, the difference of wave intensity and lithologic composition of coastal bedrock intensifies the difference of marine erosion, thus producing prominent reefs. Because it is distributed in the sea or near the coast, it is not conducive to coastal fisheries and navigation.
Taihu stone, also known as rockery, is also a kind of limestone, which was gradually formed in the long years due to the long-term impact of waves and the dissolution of water containing carbon dioxide. This kind of stone is suitable for the layout of parks, lawns, campuses, courtyards and other tourist attractions, and has high ornamental value.
Fossils are stones made of biological remains or debris that lived in the distant past. We can see the appearance of ancient animals and plants from fossils, thus we can infer the living conditions and environment of ancient animals and plants, infer the formation age and historical changes of the strata where fossils are buried, and thus we can see the biological changes from ancient times to the present.
Chapter Three: Strange Stones
I remember one day, Yu and I played a water gun battle in front of the flower bed in front of my house. When we were watering the Camellia tree, I accidentally found a small stone under the Camellia tree, shining and beautiful! I can't wait to clean the small stone and dry it. Wow! There are no scratches all over the body, unlike ordinary stones at all. Is it jade?
The first small stone I picked up was diamond-shaped, dark yellow and very smooth. Every corner is curved and can shine under the light, just like a diamond-shaped jade. The second small stone is oval, dark black and a little cracked, but if you don't pay attention, you won't notice it at all. It is also smooth and round in your hand, which definitely gives you a good feel. The third small stone is round and light yellow, and its roundness seems to be specially treated, just like the chess we play. There are many kinds of small stones. I put them in a beautiful transparent glass jar at home as decoration, which really adds elegance to the living room.
These wonderful little stones! Although seemingly ordinary, each of them is extremely precious to me. I like these ordinary and beautiful little stones.
The above is the "500-word writing about strange stones" brought to you by the composition column of grade three in primary school. I hope it can inspire you to write 500 words about strange stones and write a good composition.