The boundary region between Mare Fecunditatis and Mare Tranquillitatis represents a complex geological interface within the lunar eastern nearside, characterized by overlapping volcanic plains, tectonic structures, and impact-related features. This study presents a detailed geological and structural analysis of the separation margin between the two maria, based on high-resolution orbital imagery and topographic data primarily from the Lunar Reconnaissance Orbiter Camera (LROC). Geological mapping was carried out using QGIS, integrating stratigraphic relationships, mare unit distributions, and linear features such as wrinkle ridges, grabens, and possible faults. Structural analysis reveals evidence of compressional and extensional regimes that influenced the emplacement and deformation of mare basalts, likely controlled by pre-existing crustal weaknesses and basin dynamics. The contact zone displays significant differences in elevation, surface age, and volcanic resurfacing patterns, suggesting asynchronous infilling and distinct volcanic histories. This work contributes to the understanding of lunar mare basin evolution and the tectonic interactions at the two major basin boundaries.
La regione di confine tra il Mare Fecunditatis e il Mare Tranquillitatis rappresenta un’interfaccia geologica complessa nel settore orientale del lato visibile lunare, caratterizzata da pianure vulcaniche sovrapposte, strutture tettoniche e morfologie legate a impatti. Questo studio presenta un’analisi geologica e strutturale dettagliata del margine di separazione tra i due mari, basata su immagini orbitali ad alta risoluzione e dati topografici provenienti principalmente dalla Lunar Reconnaissance Orbiter Camera (LROC). La mappatura geologica è stata realizzata con il software QGIS, integrando relazioni stratigrafiche, distribuzioni delle unità mareali e strutture lineari come wrinkle ridges, graben e potenziali faglie. L’analisi strutturale evidenzia regimi compressivi ed estensionali che hanno influenzato la messa in posto e la deformazione dei basalti mareali, probabilmente controllati da debolezze crostali preesistenti e dalla dinamica dei bacini. La zona di contatto mostra notevoli differenze in quota, età superficiale e modalità di ricopertura vulcanica, suggerendo episodi di riempimento asincrono e storie vulcaniche distinte. Questo lavoro contribuisce alla comprensione dell’evoluzione dei bacini mareali lunari e delle interazioni tettoniche lungo i due principali margini di bacino.
Geological and Structural Analysis of the separation margin between Fecunditatis and Tranquillitatis Maria
SEMBIANTE, ALESSIA
2024/2025
Abstract
The boundary region between Mare Fecunditatis and Mare Tranquillitatis represents a complex geological interface within the lunar eastern nearside, characterized by overlapping volcanic plains, tectonic structures, and impact-related features. This study presents a detailed geological and structural analysis of the separation margin between the two maria, based on high-resolution orbital imagery and topographic data primarily from the Lunar Reconnaissance Orbiter Camera (LROC). Geological mapping was carried out using QGIS, integrating stratigraphic relationships, mare unit distributions, and linear features such as wrinkle ridges, grabens, and possible faults. Structural analysis reveals evidence of compressional and extensional regimes that influenced the emplacement and deformation of mare basalts, likely controlled by pre-existing crustal weaknesses and basin dynamics. The contact zone displays significant differences in elevation, surface age, and volcanic resurfacing patterns, suggesting asynchronous infilling and distinct volcanic histories. This work contributes to the understanding of lunar mare basin evolution and the tectonic interactions at the two major basin boundaries.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/92689