Why is Niagara Falls retreating?

Niagara means "water of the god of thunder" in the Indian language, and the Indians believe that the roar of the waterfall is the god of thunder. Niagara Falls is located on the Niagara River on the border between Canada and the United States, and is a world-famous waterfall. The formation of Niagara Falls lies in unusual geological formations.

In the Niagara Gorge, the rock formations are nearly horizontal, and the water is able to cascade straight down the cliff edge at the top of the falls.

At present, the surface rock at the site of Niagara Falls belongs to the dolomite formed in the Paleozoic Era, which is extremely resistant to erosion. But beneath this layer of rock are fragile shale and sandy rock formations, as the saying goes, "dripping water through stones".

The waterfall has millions of kilograms of water cascading down from a height of about 50 meters every minute. The violent impact of the strong rapids and the friction of sand and gravel caused the softer shale in the lower part of the limestone cliff to be hollowed out, and the upper part of the bedrock collapsed, causing the waterfall to retreat continuously.

Niagara Falls (Niagara Falls) is located at the junction of Ontario, Canada and New York State, USA, the source of the waterfall is the Niagara River, and the main waterfall is located in Canada, which is the best place to see the waterfall; In the United States, the waterfall is separated by Moon Island, and the view is from the side of the fall.

The Niagara River rushes down the cliff to rejoin downstream, falling at a rate of less than 2 kilometers per hour and down to a drop of one metre, creating the world's wildest whirlpool rapids, passing through Queenston on the left bank of Canada and Livingston on the right bank of the United States, rushing through the "Devil's Hole Rapids" and following the final "Divides the Swiston Tributary Canyon" from west to east into Lake Ontario.

The formation of the waterfall lies in the unusual geological formation. In the Niagara Gorge, the rock formations are nearly horizontal, dropping only 19 22 feet per mile. The top layer of the rock is made of hard marble, and the bottom is a soft geological layer that is susceptible to water erosion.

The ability to cascade straight down the cliff edge at the top of the waterfall is due to the hard marble geological layer on the soft ground.

The bedrock has low resistance to erosion, and the upper part of the bedrock is constantly retreating.

Because its rocks have been eroded, this is traceable.

Because when the water washes away, it will retreat.

This is due to the long-term erosion of the water.

This is due to long-term water erosion.

This may be caused by the movement of the earth's crust.

That's because the waterfall has been washed away by water for a long time, resulting in fewer good stones

This is probably due to the erosion of the waterfall.

I think it's probably the time that has changed the waterfall.

This is the reason why they are constantly evolving.

The Niagara Falls Great Drop is due to geological processes. About 100 million years ago, the North American continent and the African continent were not separated, and the excavated crust in this area continued to rise and fall, forming many ancient landforms. About 10,000 years ago, during the last glacial period, snow covered the entire area in the Niagara Territory, and after the snow melted, the water in Lake Eugene behind the mountain increased, and the lake squeezed out the present-day Niagara River.

Both the preglacial and post-glacial falls were formed near the present-day Niagara River due to glaciation. The rocky and simple layers along the Niagara River are made up of soft layers that are easily eroded and hard layers that overlay the soft layers. Over a long period of time, water has formed waterfalls by eroding and abrasive these easily eroded rock formations.

At the location of today's Great Drop, a limestone layer more than 400 meters wide has been impacted by the current for a long time, so the cliff gradually shrinks, and the rocks on it gradually fall off, so the Niagara Falls Great Drop is formed.

Region: Transnational waterfalls on the border between the United States and Canada.

Exact address: Niagara Falls, about 20 miles (32 km) north of Buffalo, St. Catherine, CaliforniaCatharines) about 16 miles (km) to the east

Description: The famous Niagara Falls is a transnational waterfall that spans the United States and Canada, from Buffalo at the southern end to the northern end. Its name, niagara, comes from the Indian "onguiaahra", which means "water of the god of thunder".

The waterfall is formed by the melting of a huge glacier and is divided into three waterfalls, "American Falls", "Horseshoe Falls" and "Veil of the Bride Falls". American Falls (American Falls), up to 50 meters, the shore length of the waterfall is 305 meters, there is a Runa Island next to the American Falls, the water flow is divided into two by it, and a small waterfall with a width of 80 meters and a drop of 50 meters is divided. The largest Horseshoe Falls (in Canada) is 56 meters high and the shore is about 675 meters long.

The "Girl in the Mist" cruise ship from the United States and Canada to the waterfall (closed due to weather in winter) shuttles between the undulating waterfalls, and the splash of water "down to 3,000 feet" will make you feel the power of nature. You can go to the Visitor Center to invest 15 million in IMAX movies, which tell you the colorful legend of Niagara Falls.

In fact, in the eyes of many Canadians, Niagara Falls is not a waterfall, but consists of two waterfalls, the Canadian Falls and the American Falls, while the Manazes believe that there are three waterfalls, that is, a bridal veil waterfall is added to the previous two waterfalls. Bridal Veil Falls trembled next to the wide Falls, but it was a strand of its own, so the Americans declared its independence. Niagara's three waterfalls are 1,160 meters wide and 1,240 meters wide if you add two islands.

Niagara Falls, located at the junction of Ontario, Canada and New York State, USA, of which the main waterfall is located in Canada, which is the best place to see waterfalls; Waterfalls in the United States are separated by Moon Island, and you can see the sides of the waterfalls.

Bordered by Canada on the left and the United States on the right, the Niagara River meanders from Lake Erie to Lake Ontario.

Niagara Falls is located on the border between Ontario, Canada and New York, USA. The source of the waterfall is the Niagara River, and the main waterfall is located in Canada, which is the best place to see the waterfall.

In the United States, the waterfall is separated by Moon Island, and the sides of the waterfall are **.

The waters of the Agara River washed down the cliffs and rejoined downstream. In a river less than 2 kilometers long, it falls at a speed of kilometers per hour, falling meters, representing the wildest eddy rapids in the world. It passes through Queenston, Canada, on the left bank, and Livingston, USA, on the right bank, rushing through the Devil's Hole rapids and following the canyon of the last Livingston tributary into Lake Ontario from west to east.

Niagara Falls, Iguazu Falls, and Victoria Falls are known as the world's three major transnational waterfalls.