Conglomerate rocks are formed by the sedimentary rock process, which is: erosion, transport, deposition and cementation. Two characteristic properties of conglomerate rock are that the sedimentary particles, or clasts, are greater than 2 millimeters in size, and the clasts are rounded in appearance. Sedimentary rocks with angular clasts are distinguished from conglomerates and are called breccias.Know More
Conglomerates, like other sedimentary rocks, are formed from the detritus of source rocks, which results from weathering and erosion. As the pieces of source rock fall away, they are transported to other locations where they are deposited in layers. In the case of conglomerates, the transport by water causes the clasts to assume their rounded shape. As the sedimentary layers pile up in the stage of the formation process called deposition, pressure compacts the lower layers.
The final stage of the process is cementation. This refers to the development of new minerals between the layered and compacted sedimentary particles. These new mineral growths bind the particles together. The process is helped along by water entering through the pores in the sedimentary layers, and depositing minerals such as calcium carbonate or silica, between the particles. The water-borne precipitates act like cement and also decrease the porosity, or the degree of open space, between the sedimentary particles until new hardened rock is formed.Learn more about Geology
Humans use rocks for a wide variety of purposes, including construction and as a source of valuable minerals located inside the rocks. Additionally, humans use rocks for decoration, recreation and thermal purposes. Humans are not the only organisms that utilize rocks, as plants, animals and fungi use rocks for stability, digestive purposes and as a substrate.Full Answer >
Rocks come from magma, which is the molten material found within the earth. When magma cools, either above or below the earth's surface, it crystallizes and forms the igneous rocks that can later be changed into metamorphic or sedimentary rocks. Magma, which can be considered molten rock, is referred to as lava when it reaches the earth's surface.Full Answer >
The study of rocks is known as geology. Scientists who study rocks are known as geologists. There are several subdivisions of geology, with different designations for researchers who study the individual disciplines.Full Answer >
Rocks are comprised of minerals, but minerals are not comprised of rocks. Minerals are inorganic compounds with unique chemical structures and physical properties that occur naturally. Rocks are solid masses that don't naturally occur. For example, the minerals quartz and feldspar, when formed together, make granite, which is a rock.Full Answer >