13 Martian 2021 astroblemes Structural superimposed Argyre analysis of 13 Cassini Martian Chryse Greely astroblemes in Hellas alphabetical Hyugens Isidis order with Margaritifer Chaos former ocean North Pole Promethei depicted at 0 Secchi meter elevation Syria & Sinai Planum Utopia G.C. Herman, PhD www.impacttectonics.org 1 QGIS Histogram of North Pole line-segment directions and the bolide 1. interpreted heading 2900 km Margaritifer Argyre 357 o radius Chaos basin

Syria-Sinai Planum heading ~357 o Greeley 700 oblique,

1200 high Base image from NASA Mars 1700 km Orbital Lander DEM gray angle shaded above 0 m topographic elevation and blue shaded Promethei below G.C. Herman, PhD www.impacttectonics.org 2 QGIS Histogram of line-segment directions 2. and the bolide interpreted heading Cassini- 342 o Tikhonravov strewn field

Isidis heading ~342o

Margaritifer oblique, Chaos Base image from NASA Mars moderate Orbital Lander DEM gray shaded Hyugens above 0 m topographic elevation and blue shaded angle below G.C. Herman, PhD www.impacttectonics.org 3 QGIS Histogram of North Pole line-segment directions and the bolide interpreted heading 3. 350 o Chryse heading ~350o oblique, moderate Base image from NASA Mars Orbital Lander DEM gray shaded Syria-Sinai Planum angle above 0 m topographic Margaritifer elevation and blue shaded Chaos below G.C. Herman, PhD www.impacttectonics.org 4 QGIS Histogram of line-segment directions

and the bolide Isidis interpreted heading Margaritifer Chaos 4. 015 o Greeley

Hyugens heading ~015o, oblique, Hellas moderate Base image from NASA Mars Argyre Orbital Lander DEM gray shaded angle above 0 m topographic Secchi elevation and blue shaded below Promethei G.C. Herman, PhD www.impacttectonics.org 5 QGIS Histogram of line-segment directions and the bolide Hyugens 5. interpreted heading Hellas basin 290o heading ~ 290o,

Chryse oblique, high Base image from NASA Mars Orbital Lander DEM gray shaded Secchi above 0 m topographic angle elevation and blue shaded Promethei below G.C. Herman, PhD www.impacttectonics.org 6 QGIS Histogram of line-segment directions and the bolide interpreted heading Cassini- 6. Tikhonravov Isidis Hyugens heading ~270o, 270o oblique,

Greeley moderate Base image from NASA Mars Orbital Lander DEM gray shaded Hellas angle above 0 m topographic elevation and blue shaded below Promethei G.C. Herman, PhD www.impacttectonics.org 7 QGIS Histogram of North Pole line-segment directions and the bolide 7. Utopia interpreted heading Isidis 320o basin heading Cassini- o Tikhonravov ~320 ,

600 oblique,

Hyugens moderate Base image from NASA Mars 1600 km Orbital Lander DEM gray shaded above 0 m topographic - to high elevation and blue shaded 2900 km radius below Hellas angle G.C. Herman, PhD Promethei www.impacttectonics.org 8 QGIS Histogram of line-segment directions and the bolide interpreted heading 8. 020o Margaritifer Cassini- Tikhonravov Chaos strewn field heading ~020o, Base image from NASA Mars oblique, Orbital Lander DEM gray shaded above 0 m topographic Greeley elevation and blue shaded low angle below Argyre G.C. Herman, PhD www.impacttectonics.org 9 QGIS Histogram of line-segment directions and the bolide interpreted heading 9. 290o Utopia North Pole, heading ~290o, oblique, Base image from NASA Mars high angle Orbital Lander DEM gray shaded above 0 m topographic Chryse elevation and blue shaded below G.C. Herman, PhD www.impacttectonics.org 10 QGIS Histogram of line-segment directions

and the bolide Hellas Secchi interpreted heading *GE view near South o 10. Pole rotated on ~010 horizontal axis 180o Hyugens Promethei, (South Pole), Greeley heading ~010o*, oblique, Base image from NASA Mars Orbital Lander DEM gray shaded above 0 m topographic Argyre low angle elevation and blue shaded below G.C. Herman, PhD www.impacttectonics.org 11 QGIS Histogram of line-segment directions and the bolide interpreted heading 11. Secchi, Hellas heading Hyugens ~135o, 600 km oblique, moderate Base image from NASA Mars Orbital Lander DEM gray shaded above 0 m topographic angle elevation and blue shaded Promethei below G.C. Herman, PhD www.impacttectonics.org 12 QGIS Histogram of line-segment directions and the bolide 12. interpreted heading Olympus Mons Margaritifer Syria and Chaos Sinai Planum, heading ~130o, oblique, Base image from NASA Mars Orbital Lander DEM gray shaded above 0 m topographic moderate elevation and blue shaded Argyre below angle G.C. Herman, PhD www.impacttectonics.org 13 QGIS Histogram of line-segment directions North Pole and the bolide interpreted heading 13. Utopia 295o basin, heading ~295o, oblique, Base image from NASA Mars high Orbital Lander DEM gray shaded above 0 m topographic Isidis elevation and blue shaded angle below G.C. Herman, PhD www.impacttectonics.org 14 13 Martian

astrobleme EAST secondary structural trends and Argyre Cassini Chryse Greely bolide

headings o 270 G.C. Herman, PhD www.impacttectonics.org

NORTH Hellas Hyugens Isidis Margaritifer Chaos

WEST

15 North Pole Promethei Secchi Syria & Sinai Planum Utopia Azimuth Crater or basin heading 13 Martian Argyre 347 Cassini 342 astrobleme Chryse 350 interpreted Greely 015 Hellas 290 bolide Hyugens 270 headings Isidis 320 Margaritifer Chaos 020 (Keep North Pole 290 watch on Promethei 010 Secchi 135 the SE Syria & Sinai Planum 128 horizon) Utopia 295

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