Orogeny in a sentence

After the Laramide Orogeny and until 20 Ma, a major period of volcanic activity occurred throughout the southwestern United States.

Around 280 Ma the Variscan orogeny mountain-building period occurred, again due to collision of continental plates, causing major deformation in south west England.

For example, a mountain-building orogeny releases hot water as a by-product of metamorphic reactions; this water can circulate to rocks thousands of kilometers away and reset their magnetic signature.

Graciansky (2011), 31 The Matterhorn is an example of the ongoing orogeny and shows evidence of great folding.

If the orogeny is due to two continents colliding, very high mountains can result (see Himalayas ).

Immediately after the Laramide orogeny, the Rockies were like Tibet : a high plateau, probably convert above sea level.

It was not until 80 Ma that these effects began to reach the Rockies. citation The current Rocky Mountains were raised in the Laramide orogeny from between 80 and 55 Ma.

Millions of years ago a collision caused an orogeny forcing horizontal layers of an ancient ocean crust to be thrust up at an angle of 50–60°.

Orogeny was used by Amanz Gressly (1840) and Jules Thurmann (1854) as orogenic in terms of the creation of mountain elevations, as the term mountain building was still used to describe the processes.

Some of the species of moths and insects show evidence of having been indigenous to the area from as long ago as the Alpine orogeny.

The closure of the latter by subduction under the African plate ( Piemont Ocean first and Valais Ocean later) preceded the collision between the two plates and the so-called alpine orogeny.

The complex formed during the Miocene and was folded and metamorphosed during the Alpine Orogeny around 60 million years ago.

The compression and orogeny continue today, as shown by the ongoing raising of the mountains a small amount each year and the active volcanoes.

The end of the Laramide orogeny was followed by volcanism and then extension.

The Fichtel mountains are also characterized by large granite bodies, called post-kinematic plutons which, in the late phase of Variscan orogeny, intruded into the metamorphic rocks.

The Laramide orogeny affected the entire western part of what would become North America starting about 70 million to 50 million years ago.

The layers have been overturned by the Caledonian orogeny With the supercontinent Gondwana covering the equator and much of the southern hemisphere, a large ocean occupied most of the northern half of the globe.

The orogeny of an orogen is only part of the orogen's orogenic cycle.

The regions immediately east of the Andes experience a series of changes resulting from the Andean orogeny.

There is an apparent direct relationship between orogeny and the atmospheric oxygen content).