This is a map of Venus.
Click on image for full size
Tessera is a unique feature of Venus, and is also known as "complex ridged terrain". These features are found on some of the Venus Plateau Highlands.
Tessera is created is by a shortening of the lithosphere. That is, when the crust is pushed together, the surface folds, buckles, and breaks, and the crust itself becomes thicker. This process
may be related to the process of mountain-building on Earth. But,
because Venus lacks plate tectonics the process must occur somewhat
Most plateau highlands are
thought to be regions where the crust is
relatively thick. Because crustal material is less dense ("lighter") than
the mantle rocks below, regions of thick crust rise higher than surrounding
areas where the crust is thinner. This is illustrated in the above sketch.
Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
section of our online store
includes a climate change card game
and the Traveling Nitrogen game
You might also be interested in:
How did life evolve on Earth? The answer to this question can help us understand our past and prepare for our future. Although evolution provides credible and reliable answers, polls show that many people turn away from science, seeking other explanations with which they are more comfortable....more
Alpha Regio and Ovda Regio are examples of what is known as a "Plateau Highland" of Venus. Among the volcanic features of Alpha Regio is Eve Mons. Unlike volcanic rises, plateau highlands have few volcanoes,...more
Ishtar Terra is one of the Plateau Highlands of Venus, is found near the north pole, and is about the size of the continental United States. Ishtar Terra contains the four main mountain ranges of Venus...more
Aphrodite Terra, the Greek name for the goddess Venus, is about half the size of the African continent, and is to be found along Venus' equator. Aphrodite Terra is different from Ishtar Terra in that,...more
Beta Regio and Atla Regio are examples of what is known as a volcanic rise. Volcanic rises are broad, sloping highlands over 1000 km across. They are cut by deep troughs 100-200 km across. These troughs...more
This image clearly shows a channel where something once flowed. Without proper measurements, scientists can only guess what sort of liquid may have flowed through this channel. On Earth, such channels...more
The feature of Venus' topography called a "Corona" is a deep, curving, trench surrounding an elevated plain. Coronae is the plural term for corona. This is an image of Artemis Corona which is found on...more
This is an example of the cratered terrain on Venus. Venusian craters are a little unusual in that there is a large amount of impact melt around the crater. This means either that the temperature of the...more