Sedimentary, Igneous, and/or Metamorphic
Rocks found at the bottom of a stream are typically called streambed rocks. These rocks can vary in size and composition, and their presence can influence the flow and ecology of the stream. Common types of streambed rocks include quartz, sandstone, and granite.
Sedimentary rocks, such as sandstone and conglomerate, are commonly found at the mouth of a river. These rocks are formed from the accumulation and compression of sediments carried by the river over time.
Usually they are in the ground.
No, fossils are typically not found in metamorphic rocks. Metamorphic rocks form from the alteration of existing rocks due to heat and pressure, which can destroy any fossils present. Fossils are more commonly found in sedimentary rocks where the conditions for preservation are more favorable.
At a bottom of a lake, a river delta, an ocean, or similar location where further movement is restricted or slowed down.
Rocks near the source of a river tend to be larger, more angular, and have sharper edges due to less erosion. In contrast, rocks found farther downstream are typically smaller, smoother, and more rounded as they have been more weathered and moved by the flowing water.
Rocks found at the bottom of a stream are typically called streambed rocks. These rocks can vary in size and composition, and their presence can influence the flow and ecology of the stream. Common types of streambed rocks include quartz, sandstone, and granite.
Sedimentary rocks, such as sandstone and conglomerate, are commonly found at the mouth of a river. These rocks are formed from the accumulation and compression of sediments carried by the river over time.
A river rock could be any of the three rocks types or any combination of the three.
Foliation, a layered or banded texture, is a common feature of metamorphic rocks but not typically found in sedimentary rocks. Metamorphic rocks can also have mineral reorganization and recrystallization that are not commonly seen in sedimentary rocks. Additionally, metamorphic rocks may exhibit distinct metamorphic minerals like garnet, staurolite, or kyanite, which are unlikely to be found in sedimentary rocks.
Usually they are in the ground.
They are found in basins.
sedimentary rocks
No, fossils are typically not found in metamorphic rocks. Metamorphic rocks form from the alteration of existing rocks due to heat and pressure, which can destroy any fossils present. Fossils are more commonly found in sedimentary rocks where the conditions for preservation are more favorable.
Copper is commonly found in igneous and sedimentary rocks, typically associated with areas of volcanic activity or hydrothermal deposits. It can also be found in some metamorphic rocks that have undergone mineral alterations.
Coal is typically found in sedimentary rocks such as sandstone, shale, and limestone. Petroleum is found in sedimentary rocks as well, usually in porous reservoir rocks such as sandstone or limestone that are capped by impermeable rock layers like shale or mudstone.
The oldest rocks are typically found on land, as they have not been eroded away by oceanic processes. The oldest known rocks on Earth are found in Western Australia and are estimated to be around 4 billion years old.