The formation of the European Alps, the causes of the formation of the Alps

The Alps were formed as a result of the collision of the African plate with the Eurasian plate.

About 100 million years ago, the Alps were part of the ancient Mediterranean, and then the land mass was gradually uplifted to form the tall Alps. The crust of the entire mountainous region is still unstable and frequent. Over the past million years, Europe has experienced several ice ages, and the Alps have formed a very typical glacial terrain, with many rocky peaks, sharp horn peaks, and many deep glacial troughs and moraine lakes in the mountains.

Until now, there are more than 1,000 modern glaciers in the Alps, with a total area of 3,600 square kilometers, which is larger than the European country of Luxembourg.

The Alps emerged during the Alpine orogeny, which began about 70 million years ago, near the end of the Mesozoic Era. During the Mesozoic Era (66.4 million years ago), river water washed away and deposited on the vast ocean floor known as the Tethys Sea.

In the middle of the Tertiary period (about 44 million years ago), the African tectonic plate moved northward and collided with the Eurasian tectonic plate, and the deep rocks that had sunk earlier into the Tethys Sea were squeezed into and around the bedrock of the crystalline body to form folds, and these deep rocks were raised along with the bedrock to a height close to that of the present-day Himalayas.

During the Quaternary period, the terrain was further shaped by Alpine glaciation and the continuous stretching of glacier tongues that filled the valleys and overflowed into the plains. The amphitheater-like depression is like a blade ridge that has been cut with a thin knife, and towering peaks such as the Matterhorn and the Großglockner are formed from the summits; The valley is widened and deepened into a general U-shape, and large waterfalls gush out from some hanging valleys hundreds of feet above the bottom of the main valley; The slender and unfathomable lakes fill many ice-hardened valleys with water.

It is formed by the extrusion of the Eurasian plate and the African plate, which is the result of the movement of the earth's crust. The convergence boundary, also known as the extinction boundary, is the boundary between two plates that converge and die out with each other, which can be understood as: the collision between the Eurasian plate, the African plate, the Antarctic plate and the Indian Ocean plate is called the extinction boundary, and the extinct plate is easy to form a trench and orogenic belt.

Equivalent to trench or ground sutures.

The reason for the formation of the Alps is ( ).a Result of the movement of the ground disturbed shell.

b Sea level rise.

c Continental rise.

d Human activities.

Answer: a. This question examines the knowledge of the theory of plate tectonics, and the six major plates are:

The Eurasian plate, the African plate, the American plate, the Antarctic plate, the Indian Ocean plate, and the Pacific plate are relatively stable internally, and the crustal activity at the junction of the plates is frequent. The reason for the formation of the Alps is the result of the mutual compression of the Eurasian plate and the African plate. It is the result of the movement of the earth's crust.

So choose option A for this question.

The cause of the Alps is ( ).a. Formed by the split between the Eurasian plate and the African plate.

b. The ground is a mountain.

c. Formed by the extrusion of the Eurasian plate and the African plate.

d. Formed by the extrusion of the Eurasian plate and the Indian Ocean plate.

Answer: C According to the knowledge of mountain lifting in the textbook, it can be seen that the cause of the Alps is formed by the extrusion of the Eurasian plate and the African plate This question group mainly tests students' understanding and mastery of the impact of the plate extinction boundary on the landform The test questions are not very difficult, and the key to solving the questions is to grasp the basic knowledge of the textbook, which is a basic topic

The Alps were formed during the Alpine orogeny. The Alps are part of the ancient Mediterranean, and hundreds of millions of years ago, due to plate movements, the African plate in the south was pushed to the north, and the rock formations below the ancient Mediterranean were squeezed and bent, thus arching upward, causing the relative movement of the African and European continents to form the Alps.

The Alps are in**.

The Alps are the largest mountain range in Europe, and many of Europe's great rivers such as the Danube, the Rhine, and the Po River originate here.

The Alps have 82 peaks over 4,000 meters above sea level, the highest peak being Mont Blanc, located at the junction of Haute-Savoie in France and Valle d'Aosta in Italy.

The Alps have been inhabited since the Paleolithic period, and the current modern economy is based on a combination of mining, stone drilling, staggering, and tourism.