Karst is an area of land made up of limestone (石灰岩), which is a soft rock that dissolves(溶解) in water. When rainwater flows through little cracks(裂缝) in the bedrock, the cracks slowly grow into tunnels and then big caves. Over time, a cave can get too big and its ceiling ...
Is gabbro an igneous rock? Is feldspar an igneous rock? Is slate an igneous rock? Is limestone a sedimentary rock? Is shale an igneous rock? Is basalt an igneous rock? Is granite an igneous rock? Is gneiss a igneous rock? Is marble a igneous rock?
What type of igneous rock is basalt? What is sedimentary petrology? What is a lahar in geology? What is a talus in geology? What is lithology in geology? What is Earth systems geology? What type of rock is basalt? What is a scarp in geology? What is the mineralogy of limestone? What...
And buildings made of soft rock, such as limestone (石灰石), are particularly badly affected. The acid rain attacks the rock, and so carvings and statues are eroded (受腐蚀) more quickly. ___(46) According to a report in the New Scientist, acid rain is being blamed for the rapid deca...
It looks kind of like marble. If not, what kind of rock is granite? When we moved into our new house, we installed a new fence that is made of limestone slabs. It really looks great, and it will definitely be able to last as long as we need it to. ...
(国际视野)The world's longest cave system is an enormous network of more than 400 miles of twists and turns, with limestone(石灰岩) falling from the ceilings in drops.Mammoth Cave National Park preserves this unique and historical natural wonder. Park officials estimate there may be another 600...
aAn example of highly mobile block toppling, the prehistoric Mystery Creek rock avalanche near Whistler, British Columbia, Canada, is described later in this article. Hu and Cruden (1992) describe a similar, although smaller, example in dolostone and limestone. 高度流动块的例子倒塌,史前奥秘小河岩石...
People living on part of the south coast of England face a serious problem. In 1993, the owners of a large hotel and of several houses discovered, to their horror that their gardens had disappeared overnight. The sea had eaten into the soft limestones(石灰岩)cliffs on which they had been...
The danger is likely to continue, they say, until the waves reach an inland area of hard rock which will not be eaten as limestone is. Meanwhile, if you want to buy a cheap house with an uncertain future, apply to a house agent in one of the threatened areas on the south coast of...
Is limestone a sedimentary rock? What are the types of geomorphology? Is paleontology an Earth science? What are the geological sciences? Is halite a chemical sedimentary rock? Is shale a metamorphic rock? What is creep in geology? What is human geology?