Two million years of rain - the beginning of the dinosaur era
Some large volcanoes are boiling lava and have high levels of carbon dioxide. The dry part of the earth is in the form of a piece. The ground surface is mostly smooth, warm and dry. The ancestors of reptiles and mammals are scattered everywhere. Earlier, the great extinction of the Permian period came to an end, with many species now extinct.
This is the beginning of the Triassic period. Then the weather changes 234 million years ago. This is the wettest period in the history of the earth that will change the face of this hot and dry earth and the life that lives in it. This period of rains will last for two million years. This is the beginning of the rule of dinosaurs on earth.
All this information, the temperature of the beginning of this era, the story of this wet season, the change of life that comes with it are safe in the earth under our feet. The rocks of the hot period are red sandstones and there is no coal in the soil of that time which was characteristic of the previous period (Permin).
Why was the earth dry? One reason for this was its shape where all the dry part was in the shape of a continent. In the second image attached to the image. Rain clouds did not penetrate deep and there were no mountain ranges that could help rain on land. The reptiles dominated the land. Early dinosaurs had arrived. In the picture attached to the sketch of some of the animals of that time. The most abundant were Listrosaurus, with six species of fossils found in large numbers, and this was a testament to plate tectonics.
But these varieties were compatible with dry weather. The rain turned it all upside down. The rain was detected by two British geologists in the 1990s. The transformation of red rocks into thick layered river rocks and large lake sedimentary rocks and this is the story of the whole world, not just one place. In Britain, the United States, Italy, Austria, the Middle East, China, the study of rocks over the next twenty years has turned out to be of the same type and date. This rain started 234 million years ago and continued till 232 million years ago.
This is called a carnivorous event. Two million years is many times longer than human history, but there is very little time for the history of the earth. The rainfall at that time was four times more than today.
The dinosaurs benefited the most from this rain. How much benefit? Only 5% of the fossils found at the beginning belong to dinosaurs, while 90% of the fossils found at the end belong to dinosaurs.
Why did dinosaurs succeed? This is because the number of tall trees began to increase rapidly due to the rains. There are a lot of big conifers. Reptiles were good for dry pistachio plants. But the newly formed forests, which had animals with long legs and could stand on their hind legs and get their food at heights, were successful. Decayonidont had no teeth and could not digest wood (we know this from their safe waste today). When the land of small herbs turned into the land of tall forests, the animals and the pictures attached to the post became extinct.
Why did it start raining? We know the reason from Alaska and Northern Canada. From the tremendous volcanic process that started here, which is called Ranglin Eruption. This was a process that lasted for millions of years, from which the layer of lava that came out was six kilometers thick. It emitted large amounts of carbon dioxide, which increased the earth's temperature by three to ten degrees around the world. This accelerated the water cycle. Rising sea temperatures greatly increased evaporation. The volcanic eruption, which lasted for a million years, warmed the earth so much that clouds from the ocean began to reach the interior of the penguin.
How did this rain end? From the metabolism of the earth. Plants make carbon a part of their body. Rocks also absorb carbon dioxide, and the oceans absorb it to form carbonate rocks, such as limestone. When the volcanic eruption stopped and carbon dioxide began to recede, the Earth's event also came to an end.
Back then, with dry and hot weather, the continent began to crumble, but the effects of climate change on life were permanent. Conifers spread across the earth and became a variety of species. Today's pine, birch, pine, and other pine trees date back to that time.
This was the beginning of the domination of dinosaurs on Earth for the next 165 million years.
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