Aphrodite Terra


Aphrodite Terra
a large plateau region that stretches approximately halfway around the middle latitude of Venus.

* * *

▪ Venusian surface feature
      the larger of two continent-sized highland areas (terrae) on the planet Venus. Aphrodite lies along Venus's equator and extends from about longitude 60° E to 150° E. It is about twice the size of Ishtar Terra and comparable in surface area to South America.

      The elevation of Aphrodite is significantly higher than that of most of Venus, lying mostly between 1 and 5 km (0.6 and 3 miles) above the mean planetary radius. Its western extremity consists of two large curving ridges that partially surround a broad circular region of low-lying rugged terrain. Most of Aphrodite is formed by two broad upland regions, Ovda Regio in the central part and Thetis Regio farther east. Ovda spans about 4,000 km (2,500 miles) from north to south; Thetis, about 3,000 km (1,900 miles). Both are composed primarily of tessera (Latin: “mosaic tile”) terrain. Extraordinarily rugged and highly deformed, tessera terrain typically displays several different trends of parallel ridges and troughs that cut across one another with a very complex geometry. This topography may have been formed by several episodes of mountain building and faulting (fault), each superimposed on its predecessor. At its eastern extremity Aphrodite Terra merges into a complex of rift valleys and other tectonic features (see tectonic landform). The geologic processes that formed Aphrodite remain to be established, but they probably included thickening of the Venusian crust in response to motions in the planet's mantle.

Steven W. Squyres
 

* * *


Universalium. 2010.

Look at other dictionaries:

  • Aphrodite Terra — Topographie d Aphrodite Terra, avec Ovda Regio à l ouest, Thetis Regio à l est, et Artemis Corona au sud est. L extension orientale du continent n est pas représentée …   Wikipédia en Français

  • Aphrodite Terra — Saltar a navegación, búsqueda Topografía de Aphrodite Terra Aphrodite Terra es una altiplanicie localizada cerca del ecuador de Venus. Tiene aproximadamente el mismo tamaño que África. Se trata de la principal elevación de terreno venusiana junto …   Wikipedia Español

  • Aphrodite Terra — Hochland auf Venus Aphrodite Terra Radarbild von Aphrodite Terra. Aufnahme mittels der Raumsonde Magellan …   Deutsch Wikipedia

  • Aphrodite Terra — Infobox feature on Venus name= Aphrodite Terra caption=Topography of Aphrodite Terra type= Terra latitude=5.8 N or S=S longitude=104.8 E or W=W diameter=10,000 km eponym=Aphrodite Aphrodite Terra is located near Venus equator. It is about the… …   Wikipedia

  • Aphrodite Terra — Astron. a large plateau region that stretches approximately halfway around the middle latitude of Venus …   Useful english dictionary

  • Ishtar Terra — Topographie d Ishtar Terra, avec Lakshmi Planum à l ouest, Maxwell Montes au centre ouest et Fortuna Tessera à l est. La plaine au nord (en bleu) est Snegurochka Planitia …   Wikipédia en Français

  • Lada Terra — Géographie et géologie Coordonnées 62,5° S • 20° E [1] Type de relief …   Wikipédia en Français

  • Ištar Terra — Hochland auf Venus Ištar Terra Lage und Topografie von Ishtar Terra …   Deutsch Wikipedia

  • Ishtar Terra — /ter euh/, Astron. a plateau region in the northern hemisphere of Venus. * * * ▪ Venusian surface feature       the smaller of two continent sized highland areas (terrae) on the planet Venus. Ishtar lies in Venus s northern hemisphere, extending… …   Universalium

  • Planet Venus — Venus   Venus in natürlichen Farben, aufgeno …   Deutsch Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.