What was the Silurian Period?
The Silurian Period (the era of biliths, where terrestrial plants and jaws appeared) is the last period of the Early Paleozoic and the third period of the Paleozoic. It started about 440 million years ago and ended 410 million years ago. Transliteration by Japanese scholars (Japanese Silur is pronounced siru, sound near Silu), Chinese borrowed. Silurian was once known as the Gotland because it developed well on the island of the Baltic Sea. Silurian can be divided into early, middle and late three generations. The three-point nature of Silurian is more significant. Generally speaking, transgression was formed everywhere in the early Silurian, the transgression in the Central Silurian reached its peak, and various degrees of retreat and land ascent in the late Silurian showed a huge transgressive cycle. In the late Silurian period, the crustal movement was strong, the ancient Atlantic Ocean was closed, some plates collided, causing some trough folds to rise, the paleogeographic appearance changed dramatically, the area of the continent expanded significantly, and the biological world also experienced a huge evolution. The history of crustal development has reached a turning point.
- One of the Silurian origins is Silures, an ancient tribe in Wales. In 1835, the British RI Mo Chisun, in
- Silurian strata are widely distributed throughout the world, and the shallow waters of that time were widely distributed in Asia, Europe, and
- The Silurian period was a period of poor sedimentary minerals. The main sedimentary mineral is the Clinton sedimentary iron ore on the North American platform. 10% of American iron ore, 20% of salt ore, and a small amount of oil and gas resources come from Silurian formations. The majority of Algeria, Libya, and central Sahara are also from the Silurian strata. In addition, there are Siberia,
- Gold mine