Answer:
Philippine plate converging with the Pacific plate, forming Mariana Islands in the Pacific Ocean
Explanation:
Oceanic convergence is the process resulting from the impact generated by the collision of two oceanic plates. This impact causes the heavier plate to sink to the point of being below the less heavy plate. The stronger the impact, the lower the heavier ocean plate will descend and the further it descends, the more it will be heated by the earth's mantle. As this plate is heated, the materials that melt and are incorporated into the mantle that increases in volume to the point of creating cracks in the terrestrial surface. This is how volcanic islands are formed, as well as cracks, similar to trenches on the seabed, are also created. Most of these volcanic islands are located in the Pacific, in the most easterly region. A strong example of this type of phenomenon is the Mariana Islands in the Pacific Ocean.
Answer:
The characteristic of the depositional environment affects the properties of sedimentary rocks are as follows-
(1) <u>Lithology-</u> It describes the constituent mineral and the type of texture these crystals have, which forms a sedimentary rock. These minerals occur in a certain depositional environment. When the weathered materials are derived and transported to some other place, then it forms a stable one in a fixed environment as the rocks are subjected to compaction and lithification, The environment in which these minerals have led to the formation of these rocks can be determined.
(2) <u>Structure-</u> There are various structures that occur in rock, such as ripple marks, cross-bedding that highlights the flow direction of water and wind. Many structures like slickensides, folding, faulting occurs in the sedimentary rocks that are formed due to tectonic activities. These structures can easily be identified and their environment of deposition can also be determined.
(3) <u>Fossil content-</u> Fossils are found to be embedded in the sedimentary rocks. The shells of organisms after death are accumulated at the bottom of the ocean. As a result of this, these shells are covered with the sediments and after millions of years, turn into fossils. For example, Sandstone, Limestone, and shale comprised of various types of shells. These fossils are found to be deposited in a shallow marine environment.
The Andes or Andean mountains are the longest continental mountain range in the world and they extend from north to south through seven South American countries.
<span>Zambia has large copper resources and is one of the world's largest exporters of copper. However, it is very dependent on this resource, and when the price of copper goes down, the economy suffers.</span>