Mount Tai Geology and Landform 20, what is Mount Tai

Mount Tai is the highest mountain range in the hills of Naoshi Mountain, the stratum is a typical basement and caprock structure area of the North China Platform, the southern rise is large, the caprock is weathered, and a large area of basement Taishan complex is exposed, that is, the Taishan group strata of the Archean Realm, which is about 2.5 billion years old, and is one of the oldest strata in China. The northern part of the country has a small uplift, and the caprock preserves the typical Paleozoic strata developed on the North China platform. The landform of Mount Tai is divided into four types: alluvial platform, denudation accumulation hills, tectonic denudation low mountains and erosion structure middle and low mountains.

Mount Tai, also known as Daishan, Daizong, Daimazeyue, Dongyue, Taiyue, is located in the central part of Shandong Province, belongs to Tai'an City, stretches between Tai'an, Jinan, Zibo City, with a total area of 24,200 hectares. The main peak of the Jade Emperor Peak is 1545 meters above sea level, the momentum is majestic, it has the head of the five mountains, the length of the five mountains, and the first mountain in the world.

Summary. This question examines the changes in geological processes and surface morphology Faults are rock formations that are subjected to excessive compression force or tension, causing rock formations to fracture and fracture surfaces, and the rock layers on both sides of the fault surface are dislocated and displaced, forming faults The rock strata on one side of the fault will descend to form valleys (such as the Weihe Plain and Fenhe Valley in China), and the rise will form fault mountains, usually accompanied by steep cliffs (such as Huashan, Lushan and Taishan in China) According to the distribution of rock strata in the figure, analyze the Taihang Mountain in the figure, and Taiyue Mountain is a folded mountain. Ziwuling is an oblique structure, and it is also a folded mountain Liupan Mountain is a barrier structure formed by faults, forming a fault block mountain Therefore, the same as the geological structure of Mount Tai in China is Liupan Mountain

This question examines the change of land rent and surface morphology Fault is the rock layer is subjected to excessive compression force or tension, so that the rock layer is fractured, and the fault surface appears, and the rock layer on both sides of the fault surface has dislocation and displacement, forming a fault The rock layer on one side of the fault will descend to form a valley (such as the Weihe Plain and the Fenhe Valley in China), and the rise will form a fault mountain, usually accompanied by steep cliffs (such as Huashan, Lushan and Taishan in China) According to the distribution of rock strata in the figure, analyze the Taihang Mountain in the figure, and the Taiyue Mountain is a folded mountain, Meridian Ridge is an oblique structure, and it is also a folded mountain Liupan Mountain is a fault-formed year-old barrier structure, forming a fault block mountain So the same as the geological structure of Mount Tai in China is Liupan Mountain

Liupan Mountain. Question 12.

The Loess Plateau, between the Taihang Mountains, the Qilian Mountains, the Great Wall and the Qinling Mountains, covers an area of about 500,000 square kilometers. This is the most extensive area in the world. Long-term soil erosion has formed the limb or surface form of the plateau with "ravines and ravines".

Therefore, bSouthridge? Yes.

What about questions 11 and 13?

Pick up ** and wait a moment.

The North China Plain is less populated and more populated, and it is not the main commodity rate base in our country, which is a mistake; The main crop in the North China Plain is wheat, b false; The North China Plain is located in a semi-humid region, and the land is dry land, but the water source is in short supply, and c is wrong; Most of the fields in North China are medium and low yields, and there are still a lot of saline-alkali land and sandy land, which need to be remediated. Therefore, d

What about Question 13? c

Around 2.5 billion years ago, there was a strong orogeny in the Luxi area, the Taishan movement.

The folds of the rock formations that were originally formed were uplifted, forming a huge mountain system, of which the ancient Taishan is a part, towering above the sea level and accompanied by the folds of the rock formations.

The uplift produced a series of faults, a large number of moderately acidic magmatic invasions, and regional metamorphism. Thus gradually taking shape.

It has become an ancient intrusive rock mass of the epidermic metamorphic rock series and the widely distributed diorite granite, with obvious stages. This type of rock.

Stone accounts for more than 95% of the main body area of Mount Tai, and is the material basis of the main body of Mount Tai. Due to these different lithologies and geomorphoses.

The large-scale existence of granitic rocks provides an excellent research object for exploring the formation of Archean massive granite, and has great scientific value in the establishment of the Precambrian underlying system.

The ancient Mount Tai towering above the sea level has been weathered and eroded for 1.8-1.9 billion years, and the terrain has gradually flattened. At the beginning of the Paleozoic Era, about 520 million years ago, the vast area of North China was greatly reduced, and the sea intruded, and the ancient Taishan also sank below sea level. Nearly 2,000 meters thick Cambrian Ordovician marine strata were deposited on the weathering and denudation surface of the ancient Taishan Mountain.

The strata deposited in this period are the standard section of the Zhangxia Cambrian located on the north side of Mount Tai, which is fully developed, well exposed, rich in paleontological fossils such as trilobites, and has a high degree of research. It is an important position in the early Paleozoic stage of the crustal evolution history in North China.

Mount Tai is mainly formed by the operation of the earth's crust.

The geological structure of Mount Tai is very complex, mainly faults, and its structural characteristics are the uplift of fault blocks. There are both structures formed in the Precambrian and tectonic developments in the Mesozoic.

The Precambrian geological structure of Mount Tai is mainly characterized by folds, faults and ductile shear zones in multiple stages. They are superimposed on each other and modified by each other, forming an extremely complex tectonic landscape, and the study of their genetic mechanism is one of the important contents of Precambrian geological research. In addition, the rare "barrel structure" developed by Mesoproterozoic diabase porphyry at home and abroad has high scientific value.

From the perspective of regional tectonics, the Pacific plate has a strong subduction of the Eurasian plate in a near-east-west direction, which makes the Taishan area under the action of near-north-south extension, the north-east-east pre-Tai fault undergoes strong tilting activity, and Mount Tai is greatly uplifted, resulting in the neotectonic movement of Mount Tai is very common and strong, and they play a leading role in controlling the formation and geomorphological pattern of Mount Tai. The gravity-slip structures formed on the Lower Paleozoic and Precambrian crystalline basement unconformities around Mount Tai are also closely related to neotectonic movements.