The presence of ribbon structures within highland plateaus favors an upwelling model for highland plateau formation, in which crustal thickening results from magmatic underplating related to a mantle upwelling or mantle plume.
In both cases, the thickness of the strong upper layer is quite thin (<1–2 km), and ribbon structures likely formed prior to long-wavelength folds, which require a greater effective elastic thickness and a deeper depth of support (∼6 km). Formation of tensile-fracture ribbons would be favored with a sharp BDT at very shallow depth, whereas a broader and somewhat deeper BDT would favor formation of shear-fracture ribbons. Shear-fracture ribbons display features (a)–(d) and (g) formed under near-surface transitional-tensile failure conditions or due to reactivation of steeply oriented preexisting fractures resulting in steep-sided graben. They require a near fracture-free shallow crust and very shallow depth to the brittle–ductile transition (BDT) (<1 km). Tensile-fracture ribbons display features (a)–(f) and formed by the opening of tensile fractures of a thin brittle layer above a ductile substrate. We propose two member types of ribbons, tensile-fracture ribbons and shear-fracture ribbons. Trough walls would not display a close fit if closed.
#NATIONAL TESSERA SERIES#
(g) In other cases (e.g., Thetis Regio) ribbons display (a)–(d), but trough walls are defined by a series of subparallel lineaments including local interior lineaments, and trough floors ramp up to join trough walls displaying parallel rather than V-shaped terminations. Trough floors are smooth and flat, lacking small-scale interior lineaments. (f) In some cases (e.g., southwest Fortuna Tessera) trough walls are parallel and matched and would exhibit a close fit if the trough was closed in these cases trough walls merge laterally forming V-shaped terminations. (e) Troughs are shallow with consistent shallow depth along individual troughs and in adjacent troughs. (c) Ribbons form long, narrow troughs that alternate with parallel, narrow ridges ridges and troughs display extreme length:width aspect ratios. (b) Ribbon-bounding lineaments form a distinct pattern alternating between radar-dark and radar-bright, which represent trough walls oriented away from and toward the satellite, respectively.
(a) Ribbon-forming lineaments exhibit sharp contrasts relative to adjacent materials. Any model of ribbon formation must account for the following constraints on ribbon geometry. In this paper, we refine the geometry of ribbons through geologic mapping and radargrammetric analysis of type ribbon structures at southwestern Fortuna Tessera we extend our findings to ribbon fabrics at Thetis Regio. Many tessera fabrics include ribbons, folds, and late graben. Tessera fabric characterizes highland plateau structure, and thus understanding the nature of this deformation is critical to understanding the mode of highland plateau formation. Among the features and finishes, homeowners will appreciate the unparalleled peace of mind of owning Americas Smarthomea whole-home network of Wi-Fi-enabled smart home devices by brands you trust, all conveniently controlled from your smartphone or the sleek touch screen panel mounted near the entry of each new home.The term tessera has been used to describe regions of deformed venusian crust exhibiting two or more intersecting sets of structural elements however, tessera includes terrains formed by a variety of spatially and temporally discrete tectonic processes. Horton, each home is crafted with uncompromising quality and unmatched efficiencies, your new home beautifully and comfortably sets the stage for a life well-lived.
#NATIONAL TESSERA FULL#
This MultiGen floorplan features a private suite attached to the main home that includes a separate entrance, bedroom, full bath, kitchenette, living room, washer, and dryer space. Tessera features a collection of one and two-story homes ranging from 2,319 square feet to 3,015 square feet with up to 5 bedrooms. Wherever you are on your journey, Tessera offers a home fit for you.