Morphological mapping of Ganymede: Investigating the role of strike-slip tectonics in the evolution of terrain types

Convection in Thin Shells of Icy Satellites: Effects of Latitudinal Surface Temperature Variations

“…The surfaces of the icy satellites within our solar system indicate a wide range of geologic activity, from relatively undeformed Callisto (e.g., Bender et al, ; Greeley et al, ; Moore et al, ) and Dione (Collins et al, ; Moore et al, ; Moore & Schenk, ; Wagner et al, ) to highly deformed Ganymede (e.g., McKinnon & Parmentier, ; Pappalardo et al, ), Miranda (e.g., Cameron et al, ; Smith et al, ; Zahnle et al, ), Enceladus (e.g., Barr & Preuss, ; Collins et al, ; Kirchoff & Schenk, ; Porco et al, ), and Europa (e.g., Greeley et al, ; Helfenstein & Parmentier, ; Kattenhorn & Prockter, ), the latter two currently active as evidenced from observed plumes(e.g., Jia et al, ; Spencer et al, ; Spitale & Porco, ). Explanations for the variations in activity range from external impact events to internal processes such as ice shell solidification and convection (e.g., Barr & Hammond, ; Grott et al, ; Hammond & Barr, , ; McKinnon, ; Moore, ; Pappalardo et al, ; Sparks et al, ).…”

Structural geology of Ganymede regional groove systems (60°N–60°S)

“…Bland & Showman, 2007;Lucchitta, 1980;Pappalardo et al, 1998;Parmentier, 1982;Philpott, 1988;Pizzi et al, 2017;Shoemaker et al, 1982;Squyres & Croft, 1986) interpret the global assemblage of Ganymede grooves as extensional zones similar to the Earth continental rifts, resulting from the global expansion that affected the satellite crust in the past. In addition to normal faulting, strike-slip motion was observed within small regions of grooved terrain (Cameron et al, 2018;Collins et al, 1998;Lucchitta, 1980;Murchie & Head, 1988;Pappalardo et al, 1998;Pappalardo & Collins, 2005). More recently, a regional scale shear component is suggested to play a key role in the evolution of large grooved terrain regions (Cameron et al, 2018;Rossi et al, 2018;Seifert, Cameron, Smith-Konter, Pappalardo, & Collins, 2015).…”

“…In addition to normal faulting, strike-slip motion was observed within small regions of grooved terrain (Cameron et al, 2018;Collins et al, 1998;Lucchitta, 1980;Murchie & Head, 1988;Pappalardo et al, 1998;Pappalardo & Collins, 2005). More recently, a regional scale shear component is suggested to play a key role in the evolution of large grooved terrain regions (Cameron et al, 2018;Rossi et al, 2018;Seifert, Cameron, Smith-Konter, Pappalardo, & Collins, 2015). Several regions imaged by the Galileo spacecraft were investigated applying structural geological methodologies.…”

“…Dardanus Sulcus is centred at 17.5°S, 342.5°E and both extension and right-lateral strikeslip tectonics originated its grooves (Cameron, Smith-Konter, Burkhard, Pappalardo, & Collins, 2016;Cameron, Smith-Konter, Pappalardo, Collins, & Nimmo, 2013;Seifert et al, 2015). Arbela Sulcus (21.1°S, 10.2°E) was formed, similarly to Dardanus Sulcus, by an extension event dissecting the upper crust (Berquin, Kofman, Herique, Alberti, & Beck, 2013;Giese, Wagner, Neukum, Pappalardo, & Head, 2001;Head et al, 2002) with a left-lateral shear component (Cameron et al, 2018;Head et al, 2002). Events of tectonic deformation suggesting extensional and strike-slip regimes were proposed also for Nun Sulci grooves (49.5°N, 43.6°E; Cameron et al, 2018;Murchie & Head, 1988;Seifert et al, 2015), Nippur/Philus Sulcus (36.9°N, 175°E), Byblus Sulcus (37.9°N, 160.1°E) and Anshar Sulcus (18°N, 162.1°E) (Cameron et al, 2018 and references therein).…”

“…Arbela Sulcus (21.1°S, 10.2°E) was formed, similarly to Dardanus Sulcus, by an extension event dissecting the upper crust (Berquin, Kofman, Herique, Alberti, & Beck, 2013;Giese, Wagner, Neukum, Pappalardo, & Head, 2001;Head et al, 2002) with a left-lateral shear component (Cameron et al, 2018;Head et al, 2002). Events of tectonic deformation suggesting extensional and strike-slip regimes were proposed also for Nun Sulci grooves (49.5°N, 43.6°E; Cameron et al, 2018;Murchie & Head, 1988;Seifert et al, 2015), Nippur/Philus Sulcus (36.9°N, 175°E), Byblus Sulcus (37.9°N, 160.1°E) and Anshar Sulcus (18°N, 162.1°E) (Cameron et al, 2018 and references therein). Tiamat Sulcus (3.4°N, 151.5°E) and Kishar Sulcus (6.4°S, 216.6°W) represent a labyrinth of intersecting grooves suggesting strike-slip shear (Bedle & Jurdy, 2005;Cameron et al, 2016;Murchie & Head, 1988) as well as in Harpagia Sulcus (11.8°S, 313.5°W; Berquin et al, 2013;Head et al, 2002).…”