Geologic Map of the Helen Planitia Quadrangle (V-52), Venus

Scientific Investigations Map 3026
Prepared for the National Aeronautics and Space Administration
By:  and 



The Magellan spacecraft orbited Venus from August 10, 1990, until it plunged into the Venusian atmosphere on October 12, 1994. Magellan Mission objectives included (1) improving the knowledge of the geological processes, surface properties, and geologic history of Venus by analysis of surface radar characteristics, topography, and morphology and (2) improving the knowledge of the geophysics of Venus by analysis of Venusian gravity. The Helen Planitia quadrangle (V-52), located in the southern hemisphere of Venus between lat 25 deg S. and 50 deg S. and between long 240 deg E. and 270 deg E., covers approximately 8,000,000 km2. Regionally, the map area is located at the southern limit of an area of enhanced tectonomagmatic activity and extensional deformation, marked by a triangle that has highland apexes at Beta, Atla, and Themis Regiones (BAT anomaly) and is connected by the large extensional belts of Devana, Hecate, and Parga Chasmata. The BAT anomaly covers approximately 20 percent of the Venusian surface.
Publication type Report
Publication Subtype USGS Numbered Series
Title Geologic Map of the Helen Planitia Quadrangle (V-52), Venus
Series title Scientific Investigations Map
Series number 3026
ISBN 9781411322196
DOI 10.3133/sim3026
Edition Version 1.0
Year Published 2008
Language ENGLISH
Publisher U.S. Geological Survey
Contributing office(s) Astrogeology Science Center
Description Report: ii, 22 p.; Plate: 56 x 35.5 inches
Projection Lambert
Scale 0
Online Only (Y/N) N
Additional Online Files (Y/N) Y
Google Analytic Metrics Metrics page
Additional publication details