Continental Drift
Continental drift was a theory created by Alfred Wegener in 1912, he suggested that all the continents were once one giant landmass millions of years ago, then slowly broke apart into the continents we know today. Wegener was determined to prove to the public that it was true, he looked into land-forms around the world. Such as the Newfoundland and northern Europe contain mountain rangers with the same rock type and age.
Take a look at the South American and African coastlines, they look like puzzle pieces. It may not seem like a perfect fit but erosion and tectonic forces slightly formed them over the years.
Changing Landforms
Glaciation
Before we talk about how glaciers change land-forms we must understand what they are and how they are formed. →
When a glacier covers a land-form it moves and erodes the land beneath and causes the land to change, the process is called glaciation. These glacier are so powerful they can pick up boulders and erode the land, sometimes creating valleys between mountains. Traveling from typically northern in the mountains down to the bay and oceans breaking off into icebergs The Human Factor of Land Reclamation |
Glacier - a slowly moving mass or river of ice formed by the accumulation and compaction of snow on mountains or near the poles. |
![Picture](/uploads/1/0/0/0/100036610/published/palm-islands.jpg?1488761521)
Land reclamation is creating new land in oceans rivers and lakes by filling sections with cement and rock the layering dirt and clay to match the pre-existing land. The most well known project is the Palm Islands in Dubai.
For, Hong Kong's land reclamation project two methods were presented, drained reclamation and deep cement mixing. Drained reclamation is the cheaper method however the polluted water from the contaminated mud pits are squeezed out and can infect the surrounding environment. Deep cement mixing blends and injects cement into the mud in columns, this is environmentally friendly and do not spread the mud pits. but more costly. A combination of both methods -the deep cement mixing where the mud pits are to prevent corruption in the surroundings and drained reclamation where its just sea bed to keep the costs down- would be ideal in my opinion.
For, Hong Kong's land reclamation project two methods were presented, drained reclamation and deep cement mixing. Drained reclamation is the cheaper method however the polluted water from the contaminated mud pits are squeezed out and can infect the surrounding environment. Deep cement mixing blends and injects cement into the mud in columns, this is environmentally friendly and do not spread the mud pits. but more costly. A combination of both methods -the deep cement mixing where the mud pits are to prevent corruption in the surroundings and drained reclamation where its just sea bed to keep the costs down- would be ideal in my opinion.