Global stratigraphy of Venus: analysis of a random

  title={Global stratigraphy of Venus: analysis of a random},
  author={A. Basilevsky and J. Head},
  journal={Earth, Moon, and Planets},
The age relations between 36 impact craters with dark paraboloids and other geologic units and structures at these localities have been studied through photogeologic analysis of Magellan SAR images of the surface of Venus. Geologic settings in all 36 sites, about 1000 × 1000 km each, could be characterized using only 10 different terrain units and six types of structures. These units and structures form a major stratigraphic and geologic sequence (from oldest to youngest): 1) tessera terrain; 2… Expand
Relationship of coronae, regional plains and rift zones on Venus
Abstract Coronae and rifts are the most prominent volcano-tectonic features on the surface of Venus. Coronae are large radial–concentric structures with diameters of 100 to over 1000 km. They haveExpand
The history of tectonism on Venus: A stratigraphic analysis
Abstract The surface of Venus displays several tectonized terrains in which the morphologic characteristics of the original materials are almost completely erased by superposed tectonic structuresExpand
Regional and global stratigraphy of Venus: a preliminary assessment and implications for the geological history of Venus
Abstract Photogeologic analysis of Magellan images for 36 widespread sites and several larger areas permits the definition and characterization of a sequence of mappable stratigraphic units andExpand
Sequential deformation of plains at the margins of Alpha Regio, Venus: Implications for tessera formation
Abstract— The boundaries between the highly deformed tessera terrain and adjacent volcanic plains are primarily those of embayment, where the tessera are stratigraphically older than the plains.Expand
Tectonic and stratigraphic implications of the relative ages of venusian plains and wrinkle ridges
Abstract A major ongoing controversy concerns the style of crustal evolution on Venus. At one extreme is a directional model that proposes a sequence of depositional and deformational events thatExpand
Geologic units on Venus: evidence for their global correlation
Abstract Detailed geologic mapping of approximately 30% of the surface of Venus has revealed a stratigraphic sequence that appears to be repeated in widely separated areas on the planet. ThisExpand
The geologic history of Venus: A stratigraphic view
On the basis of regional and global stratigraphic analyses, we outline the major events in the geologic history of Venus determined by photogeological study of surface features. Because theExpand
The history of volcanism on Venus
Abstract Completion of a global geological map of Venus has provided documentation of the relative age relationships, spatial distribution, and topographic configuration of the major geologic unitsExpand
Corona Associations and Their Implications for Venus
Abstract Geologic mapping principles were applied to determine genetic relations between coronae and surrounding geomorphologic features within two study areas in order to better understand venusianExpand
Structural Analysis of a Sampling of Tesserae: Implications for Venus Geodynamics
Abstract Understanding the nature and timing of tessera formation is fundamental to Venus tectonic and geodynamic models. Tesserae are commonly considered to exhibit complex deformation histories, toExpand


Magellan observations of Alpha Regio: Implications for formation of complex ridged terrains on Venus
Magellan images of Alpha Regio reveal previously undetected structures and details of the morphology of this region of complex ridged terrain. We examine the complex ridged terrain of Alpha Regio,Expand
Venus volcanism: Classification of volcanic features and structures, associations, and global distribution from Magellan data
A preliminary analysis of a global survey of Magellan data covering over 90% of the surface and designed to document the characteristics, location, and dimensions of all major volcanic features onExpand
Although the origin and composition of many units are obscure or controversial, their interpretations are based on objective descriptions of morphologic characteristics visible on Viking photomosaicsExpand
Plains tectonism on Venus: The deformation belts of Lavinia Planitia
High-resolution radar images from the Magellan spacecraft have revealed the first details of the morphology of the Lavinia Planitia region of Venus. A number of geologic units can be distinguished,Expand
Age of rifting and associated volcanism in Atla Regio, Venus
An estimation of the age of rifting and associated volcanism in Atla Regio is carried out based on photogeologic analyses of the stratigraphic relationships between rift-associated features andExpand
The geology and geomorphology of the Venus surface as revealed by the radar images obtained by Veneras 15 and 16
A region-by-region condensed description of almost all of the area that was radar-photographed by Veneras 15 and 16 is presented. Using some generalizations, the diversity of terrain was reduced to aExpand
Regional topographic rises on Venus: Geology of Western Eistla Regio and comparison to Beta Regio and Atla Regio
Regional topographic rises in the equatorial region of Venus (Western Eistla Regio, Beta Regio, and Atla Regio) form a unique class of structures which on the basis of geologic mapping andExpand
Venus tectonics: An overview of Magellan observations
The nearly global radar imaging and altimetry measurements of the surface of Venus obtained by the Magellan spacecraft have revealed that deformational features of a wide variety of styles andExpand
Density and morphology of impact craters on Tessera Terrain, Venus
Densities of impact craters on tessera, which is complex ridged terrain of tectonic origin, and on the remainder of the planet, which is mostly volcanic plains, were studied using Magellan images forExpand
Global Resurfacing of Venus
The impact cratering record on Venus is unique among the terrestrial planets. Fully 84% of the craters are in pristine condition, and only 12% are fractured. Remarkably, only 2.5% of the craters andExpand