< Weeds, leveling the land, cutting down trees for firewood, repairing doors, lighting fires to keep ...... warmAfter a busy time, Xiao Zhi and his party of 4 can finally rest at ease, thinking of what happened during the day, everyone has a feeling of escaping death. "The fossils of the Lepsosaurus, the Air Dragon, and the Spirit Dragon were all found in the Sichuan Basin region of China, did we travel back to the Sichuan-Tibet region during the Jurassic period? Nana said after thinking about it seriously. "It makes sense, if we are really in the Sichuan-Tibet region of ancient China, then we need to go from Sichuan through Yunnan to the Beibu Gulf region of Guangxi, and maybe we can also encounter that thunderstorm, rainstorm, tornado, so that we can go back to the original world! Xiu Xian said excitedly. "Great! It's finally time to go home! Xiao Ling danced and gestured, "I'm going to Indonesia to play!" "That's a good idea, but I checked it, and the whole journey from Chengdu to Qinzhou is about 1,400 kilometers, and there were no cars and high-speed trains in the primeval forest here in ancient times, so it's too far to walk back, right?" Ash asked dejectedly......
Brother don't be sad, there is still hope in my opinion", Shuxian said comfortingly to Ash, and the doctor's brother began to elaborate his thoughts: Jurassic began at about 1900 million years ago, ending at about 1500 million years ago, in the second epoch of the Mesozoic Era, when the continent was still a unified whole, surrounded by a blue ocean, we now call this continent "Pangea". "If there were trains at that time, people would probably be able to see all the land by train, without the need for ships and planes. The name Pangea was proposed by the German geologist Alfred Wegener in 1912, who proposed a theoretical hypothesis about the movement of the earth's crust and the distribution of oceanic continents, the "continental drift theory". Wegener envisioned the world's continents as a unified whole (Pangea) before the Carboniferous period of the Paleozoic Era, surrounded by vast oceans. At the end of the Mesozoic Era, under the action of the gravitational force of celestial bodies and the centrifugal force generated by the rotation of the earth, the continent of Pangea broke into several pieces, separated and drifted on the silicon magnesium layer, and gradually formed the distribution of the current ocean and land. Moreover, under the action of various gravitational forces, the Pangea continent began a process that lasted for hundreds of millions of years, and the surging sea water rushed to the cracks of the earth, slowly forming countless shallow seas and swampy wetlands, and various land plates until the formation of the pattern of seven continents and four oceans in the world today. During the Jurassic period, there was an inland sea between China and the Tarim Basin in Xinjiang that connected it to the Tethys Ocean (ancient Mediterranean), and parts of Sichuan were also flooded with seawater. Because the crustal movement was very active at that time, and the orogeny and land-building movement were also very frequent, most of the area in South China had not yet been formed, and most of the coastal areas were under the seawater, so in the Jurassic era, it may only be a few hundred kilometers from Sichuan to the coast of Guangxi through Yunnan and Guizhou, and it may be 50 kilometers a day, and it may take about 20 days to reach the destination. "Brother was very knowledgeable and fantastic! With my brother here, we will definitely turn evil into good fortune and arrive at our destination smoothly! Ash took the lead and clapped and said; Xiao Ling and Nana also gave warm applause.
After discussing for about 3 hours, Ash and Spirit were tired today, curled up in their sleeping bags, and fell asleep in ......