Research Article| January 01, 2014 New constraints on volcano-tectonic evolution of large volcanic edifices on Venus from stereo topography–derived strain estimates Patrick J. McGovern; Patrick J. McGovern 1Lunar and Planetary Institute, USRA (Universities Space Research Association), Houston, Texas 77058, USA Search for other works by this author on: GSW Google Scholar Gerald A. Galgana; Gerald A. Galgana 1Lunar and Planetary Institute, USRA (Universities Space Research Association), Houston, Texas 77058, USA2AIR Worldwide, 131 Dartmouth Street, Boston, Massachusetts 02116, USA Search for other works by this author on: GSW Google Scholar Katelyn R. Verner; Katelyn R. Verner 1Lunar and Planetary Institute, USRA (Universities Space Research Association), Houston, Texas 77058, USA3Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, Indiana 47907, USA Search for other works by this author on: GSW Google Scholar Robert R. Herrick Robert R. Herrick 4Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska 99775-7320, USA Search for other works by this author on: GSW Google Scholar Geology (2014) 42 (1): 59–62. https://doi.org/10.1130/G34919.1 Article history received: 08 Jul 2013 rev-recd: 13 Sep 2013 accepted: 25 Sep 2013 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Patrick J. McGovern, Gerald A. Galgana, Katelyn R. Verner, Robert R. Herrick; New constraints on volcano-tectonic evolution of large volcanic edifices on Venus from stereo topography–derived strain estimates. Geology 2014;; 42 (1): 59–62. doi: https://doi.org/10.1130/G34919.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Radial fracture systems at large volcanoes on Venus offer opportunities to unravel the tectonic and magmatic evolution of such edifices. However, the relatively low spatial resolution (10–20 km) of altimetry data for Venus has hampered previous efforts at quantitative analysis of fault systems. Recently released stereo-derived topography enables kilometer-scale strain estimates to be made at tectonic features. The new data resolve fault valleys (grabens) that cut the summit regions of two large volcanoes, showing them to be deeper than previously assumed. The grabens formed after most edifice building was complete. We demonstrate that inflation of oblate sill-like magma chambers is consistent with the magnitudes and distributions of strain at these volcanoes, and estimate chamber depth, radius, and overpressure. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.