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Geologic Map of Aphrodite Map Area (AMA; I‐2476), Venus

We present a 1:10‐M‐scale geologic map of the Aphrodite Map Area (AMA) of Venus (0°N–57°S/60–80°E). Geologic mapping employed NASA Magellan synthetic aperture radar and altimetry data. The AMA geologic map, with detailed structural elements and geologic units covering over one eighth of Venus'...

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Detalles Bibliográficos
Autores principales: Hansen, V. L., López, I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7583386/
https://www.ncbi.nlm.nih.gov/pubmed/33134435
http://dx.doi.org/10.1029/2019EA001066
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author Hansen, V. L.
López, I.
author_facet Hansen, V. L.
López, I.
author_sort Hansen, V. L.
collection PubMed
description We present a 1:10‐M‐scale geologic map of the Aphrodite Map Area (AMA) of Venus (0°N–57°S/60–80°E). Geologic mapping employed NASA Magellan synthetic aperture radar and altimetry data. The AMA geologic map, with detailed structural elements and geologic units covering over one eighth of Venus' surface, affords an important and unique perspective to test models of global‐scale geologic processes through time. Geologic relations record a history inconsistent with global catastrophic resurfacing. The AMA displays a regional coherence of preserved geologic patterns that record three sequential geologic eras: the ancient era, the Artemis superstructure era, and the youngest fracture zone era. The ancient era and Artemis superstructure, with a footprint covering more than 25% of the surface, are recorded in the Niobe Map Area to the north. The latter two eras likely overlap in time. The fracture zone domain, part of a globally extensive province, marks the most spatially focused tectonomagmatic domain within the AMA. Impact craters are both cut by and overprint fracture zone structures. Twelve percent of AMA impact craters that occur within the fracture zone domain predate or formed during fracture zone development. This observation indicates the relative youth of the fracture zone era and is consistent with the possibility that this domain remains geologically active. The AMA records a rich geologic history of large tract of the surface of Venus and provides an important framework to formulate new working hypotheses of Venus evolution and contribute to planning future studies of the surface of planets.
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spelling pubmed-75833862020-10-29 Geologic Map of Aphrodite Map Area (AMA; I‐2476), Venus Hansen, V. L. López, I. Earth Space Sci Research Articles We present a 1:10‐M‐scale geologic map of the Aphrodite Map Area (AMA) of Venus (0°N–57°S/60–80°E). Geologic mapping employed NASA Magellan synthetic aperture radar and altimetry data. The AMA geologic map, with detailed structural elements and geologic units covering over one eighth of Venus' surface, affords an important and unique perspective to test models of global‐scale geologic processes through time. Geologic relations record a history inconsistent with global catastrophic resurfacing. The AMA displays a regional coherence of preserved geologic patterns that record three sequential geologic eras: the ancient era, the Artemis superstructure era, and the youngest fracture zone era. The ancient era and Artemis superstructure, with a footprint covering more than 25% of the surface, are recorded in the Niobe Map Area to the north. The latter two eras likely overlap in time. The fracture zone domain, part of a globally extensive province, marks the most spatially focused tectonomagmatic domain within the AMA. Impact craters are both cut by and overprint fracture zone structures. Twelve percent of AMA impact craters that occur within the fracture zone domain predate or formed during fracture zone development. This observation indicates the relative youth of the fracture zone era and is consistent with the possibility that this domain remains geologically active. The AMA records a rich geologic history of large tract of the surface of Venus and provides an important framework to formulate new working hypotheses of Venus evolution and contribute to planning future studies of the surface of planets. John Wiley and Sons Inc. 2020-09-24 2020-09 /pmc/articles/PMC7583386/ /pubmed/33134435 http://dx.doi.org/10.1029/2019EA001066 Text en ©2020 The Authors. This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
spellingShingle Research Articles
Hansen, V. L.
López, I.
Geologic Map of Aphrodite Map Area (AMA; I‐2476), Venus
title Geologic Map of Aphrodite Map Area (AMA; I‐2476), Venus
title_full Geologic Map of Aphrodite Map Area (AMA; I‐2476), Venus
title_fullStr Geologic Map of Aphrodite Map Area (AMA; I‐2476), Venus
title_full_unstemmed Geologic Map of Aphrodite Map Area (AMA; I‐2476), Venus
title_short Geologic Map of Aphrodite Map Area (AMA; I‐2476), Venus
title_sort geologic map of aphrodite map area (ama; i‐2476), venus
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7583386/
https://www.ncbi.nlm.nih.gov/pubmed/33134435
http://dx.doi.org/10.1029/2019EA001066
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