Venus tesserae feature layered, folded, and eroded rocks


Byrne P. K. , Ghail R. C. , Gilmore M. S. , Şengör A. M. C. , Klimczak C., Senske D. A. , ...More

GEOLOGY, vol.49, no.1, pp.81-85, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 1
  • Publication Date: 2021
  • Doi Number: 10.1130/g47940.1
  • Journal Name: GEOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, Compendex, Computer & Applied Sciences, Environment Index, Geobase, Pollution Abstracts, DIALNET, Civil Engineering Abstracts
  • Page Numbers: pp.81-85
  • Istanbul Technical University Affiliated: Yes

Abstract

Tesserae on Venus are locally the stratigraphically oldest units preserved on the planet. These regions are characterized by pervasive tectonic deformation including normal faults, grabens, thrust faults, and folds. In multiple tesserae, sets of (often highly) curved, parallel linear features are also present. These features strongly resemble terracing in layered volcanic or sedimentary sequences on Earth having arcuate or sinuous outcrop patterns that follow undulating topography. Should this analogy hold for Venus, then these outcrop patterns imply some erosion of the tessera units in which these strata occur; radar-dark materials filling proximal lows might be deposits of that eroded material. This outcrop pattern is seen in geographically dispersed tessera units, so the preservation of layering could be common for this terrain type. If so, then tesserae record the culmination of volcanic and/or sedimentary deposition, folding, and erosion-complex geological histories that should be considered in future studies of this enigmatic terrain.