two oceanic plates collide D. a continental plate subducts an oceanic plate 相关知识点: 试题来源: 解析 B。解析:当大洋板块移动到热点上方时,常常会形成火山岛。选项A两个大陆板块相遇不会形成火山岛。选项C两个大洋板块碰撞主要形成山脉等地形,不是火山岛的形成原因。选项D大陆板块俯冲到大洋板块之下不是...
As the name suggests, fold mountains occur when two tectonic plates collide at a convergent plate boundary, causing the crust to overthicken. This process forces the less dense crust to float on top of the denser mantle rocks – with material being forced upwards to form hills, plateaus or m...
Loess formed after the ice age when the glaciers covering a relatively large portion of the earth melted and were carried away, exposing the vast plains of mud. Upon drying of the mud, the forces of wind blew away the mud and exposed sediments and eventually deposited them as silt in ...
Plateaus usually form when two tectonic plates collide, causing a slow upward movement of land. Some plateaus, such as the Colorado Plateau in the United States, still rise by a measurable distance every year. Plateaus can also be formed by volcanic activity, when layers of lava cool and hard...
The Atlantic Ocean formed like this as the American and Afro-European plates moved in opposite directions. When two plates carrying continents collide, the continental blocks, too light to be drawn down, continue to float and therefore buckle (起褶皱) to form a mountain chain along the length ...
Based on Plate Tectonics, when two oceanic plates collide, the plate subducts because it a) Older; contains more iron and is therefore, more dense b)Younger; is thinner and therefore easier to subduct c) Older; colder and therefor...
How were the Andes Mountains formed? Why do volcanoes not form at continental collision boundaries? How are geologic structures related to plate tectonics? Which three land regions does the Appalachian Mountains run through? Explain the formation o...
The Philippine Islands are an arc of volcanic islands that have formed as the Pacific Plate melts. Two continental crusts collideThe last convergent boundary is where two continental crusts collide. The ocean crust that separated the two continents subducts as the continents converge. The converging...
When two oceanic plates collide, the older denser plate subducts or "dives" underneath the other plate. The results of this tectonic collision are similar to those involving oceanic and continental plates. A deep trench is formed on the seafloor. For example, the formidable Marianas Trench has ...
Eurasian Plate:The Eurasian Plate is a large tectonic plate underlying most of Eurasia, with the exception of the Arabian Peninsula, Indian subcontinent, and parts of eastern Siberia.Answer and Explanation: Given the size of the plate's perimeter, there are numerous boundaries and thus faults, ...