Table 2. Summary of mapped surficial and bedrock units.

Group	Unit name (this study)	Unit abbreviation	Unit name (Goudge et al. 2015)	Unit description	Interpretation	Type location(s) (lat/lon)
Surficial units	Aeolian bedforms, large	Ab-l	Surficial debris cover	Light-toned, parallel, and straight-crested bedforms ~ 10s to 100s of meters in length and ~ 1–10s of meters in wavelength	Transverse aeolian ridges	77.379, 18.483 and 77.337, 18.433
	Aeolian bedforms, small	Ab-s	Surficial debris cover	Dark-toned, sub-parallel, straight-crested bedforms ~ 1–10s of meters in length and 1 to several meters in wavelength. Reticulate patterns are common	Aeolian wind ripples	77.421, 18.427
	Undifferentiated smooth	Us	–	Widespread smooth, dark-toned deposits that drape topography	Unconsolidated mantling deposits variably composed of dust, sand, pebbles, cobbles	77.431, 18.402
	Talus	T	Surficial debris cover	Boulder accumulations on slopes and below eroded outcrops	Blocks eroded from the bedrock via physical weathering	77.429, 18.497
Jezero crater floor	Crater floor fractured 1	Cf-f-1	Light-toned floor unit	Massive, light-toned fractured and blocky bedrock exposed on the crater floor below −2530 m elevation	Unspecific tephra, airfall, aeolian, or lacustrine deposit	77.413, 18.410
	Crater floor fractured 2	Cf-f-2	Light-toned floor unit	Light-toned, rough, and fractured bedrock that crops out between −2530 and −2440 m elevation	Unspecified tephra, airfall, aeolian, or lacustrine deposit	77.447, 18.560
	Crater floor fractured rough	Cf-fr	Volcanic floor unit	Light- to medium-toned, rough, boulder-producing unit that is highly crater-retaining. Polygonal fracture networks are common	Unspecified tephra, airfall, aeolian, or lacustrine deposit	77.467, 18.340
Jezero crater margin	Margin fractured	M-f	Mottled terrain	Light-toned fractured bedrock inside Jezero crater between the elevation ranges of −2440 m and −2190 m south of the Neretva Vallis and −2440 m and −2240 m north of Neretva Vallis. Forms a low relief, less blocky expression, and blocky, ridge-forming outcrops	Unspecified tephra or marginal lacustrine deposit	77.335, 18.476
Jezero crater delta	Delta blocky	D-bl	Western fan deposit	Intermediate-toned blocky deposit that forms steep-sided, boulder-shedding elongate ridges on the delta’s upper surface	Coarse-grained fluvial channel deposits	77.385, 18.501
	Delta thinly layered	D-tnl	Western fan deposit	Stratified sequence of < 1 m thick alternating light and dark planar bands. Locally deformed	Fine-grained prodelta or distal lacustrine deposits	77.350, 18.451
	Delta thickly layered	D-tkl	Western fan deposit	Light-toned, resistant strata up to several meters thick	Channel lobes at the toe of the delta slope or delta plain alluvial or floodplain deposits	77.417, 18.524
	Delta truncated curvilinear layered	D-tcl	Western fan deposit	Curvilinear, decimeter-scale sets of alternating light- and dark-toned layers that truncate against one another over length-scales of tens of meters	Laterally accreting point bars, or subaqueous channel-levee complexes	77.387, 18.472
	Delta layered rough	D-lr	Northern fan deposit	Light-toned, parallel m-thick stratified deposit northeast of the western delta	Distal deltaic deposits	77.481, 18.583
Jezero crater rim and beyond	Crater rim blocky	Cr-bl	Crater rim and wall material	Intermediate-toned unit that forms resistant high-standing ridges that erode into boulders	Pre-Jezero/impact basement bedrock of unspecified sedimentary or volcanic origin	77.292, 18.467
	Crater rim breccia	Cr-br	Crater rim and wall material	Brecciated and disrupted light- and intermediate-toned bedrock exposed on the Nili Planum-facing slope of the Jezero crater rim	Syn-Isidis or syn-Jezero impact breccia	77.269, 18.445
	Crater rim layered	Cr-l	Crater rim and wall material	Light-toned stratified and polygonally fractured unit that is occasionally faulted and disrupted	Pre-Jezero/impact basement bedrock of unspecified sedimentary or volcanic origin	77.260, 18.459
	Crater rim rough	Cr-r	Pitted capping unit	Light-toned unit characterized by high crater retention, a rough texture, and polygonal fractures	Unspecified clastic sedimentary or explosive volcanic deposit	77.275, 18.386
	Neretva Vallis layered	NV-l	–	Light- to intermediate-toned layered outcrops exhibiting m-scale polygonal fractures	Fluvial deposits	77.256, 18.509
	Nili Planum fractured	NP-f	Mottled terrain; Eroded mottled terrain	Light-toned fractured outcrop occurring above –2240 m elevation north of Neretva Vallis and above –2190 m elevation south of Neretva Vallis	Unspecified tephra, airfall, or aeolian deposit	77.274, 18.537