Search Results - "Hansen, Vicki"

Global tectonic evolution of Venus, from exogenic to endogenic over time, and implications for early Earth processes by Hansen, Vicki L.

“…Venus provides a rich arena in which to stretch one's tectonic imagination with respect to non-plate tectonic processes of heat transfer on an Earth-like…”
Get full text

A new irradiated quartz for beta source calibration by Hansen, Vicki, Murray, Andrew, Buylaert, Jan-Pieter, Yeo, Eun-Young, Thomsen, Kristina

“…For luminescence dating to be an accurate absolute dating technique it is very important that we are able to deliver absolutely known radiation doses in the…”
Get full text

Towards the origins of over-dispersion in beta source calibration by Hansen, Vicki, Murray, Andrew, Thomsen, Kristina, Jain, Mayank, Autzen, Martin, Buylaert, Jan-Pieter

“…The ability to deliver accurate and precise calibration doses is a central part of all trapped charge dating methods. Usually, the radiation source (α, β,…”
Get full text

Geologic Map of the Niobe Planitia Region (I‐2467), Venus by López, Iván, Hansen, Vicki L.

“…We present a 1:10M scale geologic map of the Niobe Planitia region of Venus (0°N–57°N/60°E–180°E). We herein refer to this area as the Niobe Map Area (NMA)…”
Get full text

Geologic constraints on crustal plateau surface histories, Venus: The lava pond and bolide impact hypotheses by Hansen, Vicki L.

“…Venusian crustal plateau formation is hotly debated. Crustal plateaus are large (∼1500–2500 km) quasi‐circular ∼0.5‐ to 4‐km‐high plateaus that host…”
Get full text

Venusian channel formation as a subsurface process by Lang, Nicholas P., Hansen, Vicki L.

“…We constructed detailed geologic maps of channels within three widely separated regions using Magellan synthetic aperture radar (SAR) imagery and altimetry…”
Get full text

Geologic mapping of tectonic planets by Hansen, Vicki L

“…Geological analysis of planets typically begins with the construction of a geologic map of the planets’ surfaces using remote data sets. Geologic maps provide…”
Get full text

Geological Evolution of Venus: Rises, Plains, Plumes, and Plateaus by Phillips, Roger J., Hansen, Vicki L.

“…Crustal plateaus and volcanic rises, major physiographic features on Venus, both formed over mantle plumes. Crustal plateaus were produced by large degrees of…”
Get full text

Global tectonic evolution of Venus, from exogenic to endogenic over time, and implications for early Earth processes by Hansen, Vicki L.

“…Venus provides a rich arena in which to stretch one’s tectonic imagination with respect to non-plate tectonic processes of heat transfer on an Earth-like…”
Get full text

Structural and Kinematic Analysis of Eastern Ovda Regio, Venus: Implications for Crustal Plateau Formation by Ghent, Rebecca, Hansen, Vicki

“…Crustal plateaus on Venus constitute one of that planet's most intriguing tectonic features. They host so-called “tessera” terrain, or deformed crust…”
Get full text

Structures in tessera terrain, Venus: Issues and answers by Hansen, Vicki L., Phillips, Roger J., Willis, James J., Ghent, Rebecca R.

“…Many workers assume that tessera terrain, marked by multiple tectonic lineaments and exposed in crustal plateaus, comprises a global onionskin on Venus…”
Get full text

Geologic evolution of southern Rusalka Planitia, Venus by DeShon, Heather R., Young, Duncan A., Hansen, Vicki L.

“…Geologic mapping of southern Rusalka Planitia, Venus, reveals interactions of volcanism, tectonism, and topography. We recognize three regional plains units…”
Get full text

Finite element modeling of short-wavelength folding on Venus: Implications for the plume hypothesis for crustal plateau formation by Ghent, Rebecca R., Phillips, Roger J., Hansen, Vicki L., Nunes, Daniel C.

“…The key geological observations and structural interpretations associated with the current plume hypothesis for Venusian crustal plateau formation are that (1)…”
Get full text

Relative timing of crustal plateau magmatism and tectonism at Tellus Regio, Venus by Banks, Brian K., Hansen, Vicki L.

“…Crustal plateaus, subcontinent‐sized regions of thickened crust that stand 1–4 km above surrounding low‐lying plains, define a major physiographic province of…”
Get full text

LIPs on Venus by Hansen, Vicki L.

“…Venus, a planet similar to Earth in heat budget lacks plate tectonics, yet displays ample evidence of extensive volcanic and tectonomagmatic processes,…”
Get full text

Effects of crustal heterogeneity on the morphology of chasmata, Venus by Bleamaster III, Leslie F., Hansen, Vicki L.

“…The Ix‐Chel, Kuanja, and Vir‐ava Chasmata (IKVC) are a 7000‐km‐long collection of discontinuous topographic troughs and deformation suites. Collectively, they…”
Get full text

Ribbon Terrain Formation, Southwestern Fortuna Tessera, Venus: Implications for Lithosphere Evolution by Hansen, Vicki L., Willis, James J.

“…The term tessera has been used to describe regions of deformed venusian crust exhibiting two or more intersecting sets of structural elements; however, tessera…”
Get full text

Constrains on vorticity and non-coaxial shear direction in Neoarchean L-S tectonites, an example from northern Minnesota, USA by Dyess, Jonathan E., Hansen, Vicki L., Goscinak, Christopher

“…•We examine microstructural fabrics in seven Neoarchean LS-tectonite samples.•We compare LS-tectonite microstructural fabrics to three monoclinic shear…”
Get full text

Corrigendum to “Constrains on vorticity and non-coaxial shear direction in Neoarchean L-S tectonites, an example from northern Minnesota, USA” [Precambrian Res. 256 (2015) 189–200] by Dyess, Jonathan E., Hansen, Vicki L., Goscinak, Christopher

Get full text

Tectonics and Volcanism of Eastern Aphrodite Terra, Venus: No Subduction, No Spreading by Hansen, Vicki L., Phillips, Roger J.

“…Eastern Aphrodite Terra, a deformed region with high topographic relief on Venus, has been interpreted as analogous to a terrestrial extensional or convergent…”
Get full text