The Dent Blanche nappe or Dent Blanche klippe is a

geologic Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other Eart ...

nappe In geology, a nappe or thrust sheet is a large sheetlike body of rock (geology), rock that has been moved more than or above a thrust fault from its original position. Nappes form in compressional tectonic settings like continental collision z ...

and

klippe 350px, Schematic overview of a thrust system. The shaded material is called a window_(geology).html"_;"title="nappe._The_erosional_hole_is_called_a__window_(geology)">window_or_fenster._The_klippe_is_the_isolated_block_of_the_nappe_overlying_aut ...

that crops out in the

Pennine Alps The Pennine Alps (german: Walliser Alpen, french: Alpes valaisannes, it, Alpi Pennine, la, Alpes Poeninae), also known as the Valais Alps, are a mountain range in the western part of the Alps. They are located in Switzerland (Valais) and Italy ( ...

. The nappe is tectonostratigraphically on top of the

Penninic nappes The Penninic nappes or the Penninicum, commonly abbreviated as Penninic, are one of three nappe stacks and geological zones in which the Alps can be divided. In the western Alps the Penninic nappes are more obviously present than in the eastern ...

and by most researchers seen as Austroalpine. The nappe is named after the mountain

Dent Blanche The Dent Blanche is a mountain in the Pennine Alps, lying in the canton of Valais in Switzerland. At -high, it is one of the highest peaks in the Alps. Naming The original name was probably ''Dent d'Hérens'', the current name of the nearby D ...

, which is formed by rocks of the nappe. The most famous

outcrop An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth. Features Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial ...

of the nappe is the

Matterhorn The (, ; it, Cervino, ; french: Cervin, ; rm, Matterhorn) is a mountain of the Alps, straddling the main watershed and border between Switzerland and Italy. It is a large, near-symmetric pyramidal peak in the extended Monte Rosa area of the ...

, which is made of an

erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is distin ...

al remnant (

) of Dent Blanche material lying on top of Penninic

ophiolite An ophiolite is a section of Earth's oceanic crust and the underlying upper mantle that has been uplifted and exposed above sea level and often emplaced onto continental crustal rocks. The Greek word ὄφις, ''ophis'' (''snake'') is found i ...

s (

Zermatt-Saas zone The Zermatt-Saas zone is a tectonic unit in the western part of the Alps. Its lithology is mainly ophiolite but there are some pelitic zones too. The Zermatt-Saas zone is tectonostratigraphically the highest part of the Penninic nappes and lies di ...

). Because of this the rock at the top of the Matterhorn ''came from

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

,'' as the Austroalpine nappes are fragments of the

African plate The African Plate is a major tectonic plate that includes much of the continent of Africa (except for its easternmost part) and the adjacent oceanic crust to the west and south. It is bounded by the North American Plate and South American Plat ...

Reference

{{DEFAULTSORT:Dent Blanche Nappe Geology of the Alps Structural geology Geology of Switzerland