Erosion

Hutton reasoned that there must have been innumerable cycles, each involving deposition on the seabed, uplift with tilting and erosion then undersea again for further layers to be deposited.

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Bays form when weak (less resistant) rocks (such as sands and clays) are eroded, leaving bands of stronger (more resistant) rocks (such as chalk, limestone, and granite) forming a headland, or peninsula.

Erosion usually exposes the geological formations, which are often made of very hard and solid igneous or metamorphic rock.

Tors are landforms created by the erosion and weathering of rock, most commonly granites but also schists, dacites, dolerites, ignimbrites, coarse sandstones and others.

Tablelands formed by the erosion of duricrusts are also quite common in parts of Australia and South America.

Throughout the course of the history of Earth, the plateau began to erode and fragment about 300 million years ago (mya), and about 70 mya the tepuis were formed from the remaining monadnocks.

The formation of strait was through scouring by erosion.

From 36 to 8 Ma the bulk (76%) of the sediments deposited in the delta came from erosion of the bedrock in the Three Rivers area.

Since 1883, due to land erosion and sea intrusion it has shrunk by 92 percent from around 12,900 square kilometres (5,000 sq mi) to nearly 1,000 square kilometres (390 sq mi) in 2018.

The brink of Upper Falls marks the junction between a hard rhyolite lava flow and weaker glassy lava that has been more heavily eroded.

This is an east-west longitudinal depression that has been eroded on a belt of relatively weak strata between the resistant crystalline rocks of the Adirondacks on the north and the northern escarpment of the Appalachian Plateau (Catskills-Helderbergs) on the south.

An inselberg is a prominent isolated residual knob or hill that rises abruptly from and is surrounded by extensive and relatively flat erosion lowlands in a hot, dry region.

Essentially, the Piedmont is the remnant of several ancient mountain chains that have since been eroded.

These rocks were intruded by a mass of granite 1400 Ma (million years ago) and later uplifted and exposed to nearly 500 million years of erosion.

There are also the occasional lava-capped mesas and dike formed ridges, surmounting the general level by 500 ft (150 m) or more and manifestly demonstrating the widespread erosion of the surrounding plains.

Their formation usually arises as a combination of certain types of rock and the onset of steady erosion processes.

The erosion produced by the incoming waters seems to be the main cause for the present depth of the Strait

Badlands are a type of dry terrain where softer sedimentary rocks and clay-rich soils have been extensively eroded.

An inselberg results when a body of rock resistant to erosion, such as granite, occurring within a body of softer rocks, is exposed by differential erosion and lowering of the surrounding landscape.

Most valleys are formed by erosion of the land surface by rivers or streams over a very long period.

A slot canyon is a long, narrow channel or drainageway with sheer rock walls that are typically eroded into either sandstone or other sedimentary rock.

An escarpment is a steep slope or long cliff that forms as a result of faulting or erosion and separates two relatively level areas having different elevations.

Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, and erosion by water and glaciers.

It is created by the erosional forces of cascading water on the rocks at the formation's base where the water impacts.

A wave-cut platform, shore platform, coastal bench, or wave-cut cliff is the narrow flat area often found at the base of a sea cliff or along the shoreline of a lake, bay, or sea that was created by erosion.

The gorge was carved out during a much more recent uplift to leave the river contained within steep walls 200 m (660 ft) high, the most famous feature being the Loreley.

The mountain's current shape is the result of cirque erosion due to multiple glaciers diverging from the peak, such as the Matterhorn Glacier at the base of the north face.

Most promontories either are formed from a hard ridge of rock that has resisted the erosive forces that have removed the softer rock to the sides of it, or are the high ground that remains between two river valleys where they form a confluence.

Niagara Falls was formed when glaciers receded at the end of the Wisconsin glaciation (the last ice age), and water from the newly formed Great Lakes carved a path over and through the Niagara Escarpment en route to the Atlantic Ocean.

The channel was gradually eroded as far upriver as Piarere, leaving the old Hinuera channel through the Hinuera Gap high and dry.

Hogback (geology), one of a number of topographic features (landforms) created by the erosion of tilted strata

Waterfalls can be formed in several ways, but the most common method of formation is that a river courses over a top layer of resistant bedrock before falling onto softer rock, which erodes faster, leading to an increasingly high fall.

Antelope Canyon was formed by the erosion of Navajo Sandstone due to flash flooding and other sub-aerial processes.

The Fish River canyon consists of an upper canyon, where river erosion was inhibited by hard gneiss bedrocks, and a lower canyon formed after erosion had finally worn through the solid metamorphic rocks.

Rapids typically form due to differential erosion in the sloping strata forming the streambed in the presence of a gradient, the softer rocks erode away faster whereas the harder rocks persist resulting in an uneven streambed.

in the past. == Formation == Mesas form by weathering and erosion of horizontally layered rocks that have been uplifted by

areas. == Formation == Buttes form by weathering and erosion when hard caprock overlies a layer of less resistant rock