Sedimentological and Geochemical Perspectives on a Marginal Lake Environment Recorded in the Hartmann's Valley and Karasburg Members of the Murray Formation, Gale Crater, Mars

Gwizd, Samantha; Fedo, C. M.; Grotzinger, J. P.; Banham, S. G.; Rivera‐Hernández, F.; Stack, K. M.; Siebach, K. L.; Thorpe, M. T.; Bell, Jim; O’Connell‐Cooper, C. D.; Stein, N.; Edgar, Lauren A.; Gupta, Sanjeev; Rubin, David M.; Sumner, D. Y.; Vasavada, A. R.

doi:10.1029/2022je007280

Cited by 19 publications

(47 citation statements)

References 132 publications

(411 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Given the correlation that connects the different sections (Figure 8), we interpret the widespread nature of the lower part of the Knockfarril Hill member as representing a sizable braidplain that supplanted antecedent lacustrine environments (Figure 9b), indicative of a paleoenvironmental shift comparable to that recorded between the Bradbury and Mount Sharp groups (Grotzinger et al, 2015;Stack et al, 2019) and facies shifts in lower members of the Murray formation (Gwizd et al, 2022). The cross-sectional view shows a heavy line separating mudstones from the sandstones consistent with some amount of erosion, even if it is only linked to the basic erosive nature of the fluvial environment itself.…”

Section: Paleoenvironmentsmentioning

confidence: 87%

Geology and Stratigraphic Correlation of the Murray and Carolyn Shoemaker Formations Across the Glen Torridon Region, Gale Crater, Mars

et al. 2022

Self Cite

View full text Add to dashboard Cite

The Glen Torridon (GT) region within Gale crater, Mars, occurs in contact with the southern side of Vera Rubin ridge (VRR), a well‐defined geomorphic feature that is comparatively resistant to erosion. Prior to detailed ground‐based investigation of GT, its geologic relationship with VRR was unknown. Distinct lithologic subunits within the Jura member (Murray formation), which forms the upper part of VRR, made it possible to be also identified within GT. This indicates that the strata pass across the geomorphic divide between regions. Furthermore, the cross‐bedded lower part of the overlying Knockfarril Hill member (Carolyn Shoemaker formation) also occurs within both VRR and GT. Correlation of both units demonstrates that the strata form a continuous stratigraphic succession regardless of large‐scale geomorphic expression. The lithologic change from mudstone (Jura member) to cross‐bedded sandstone (Knockfarril Hill member) heralds a significant shift in paleoenvironment from lacustrine to fluvial. The upper part of the Knockfarril Hill member consists of interbedded mudstone and sandstone that transitions to the overlying finely laminated mudstone of the Glasgow member, and a return to lacustrine deposition. In GT, the Stimson formation unconformably overlies the Glasgow member, where it demarks the southern boundary of GT. Contacts for each stratigraphic unit were defined and transferred to a high‐resolution image base to make a geologic map and cross sections perpendicular to the NE strike. Stratal dips cannot exceed 2° NW to retain the positions of stratigraphic units in the locations they are exposed throughout GT.

show abstract

Section: Paleoenvironmentsmentioning

confidence: 87%

Geology and Stratigraphic Correlation of the Murray and Carolyn Shoemaker Formations Across the Glen Torridon Region, Gale Crater, Mars

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…3; all in molecular proportions). Following conventions established in Nesbitt and Young (1982, 1989, CaO* represents a transformation of the total CaO to that only in the silicate fraction by removing Ca linked to carbonates and phosphates (and sulfates, Gwizd et al 2022) following the expression in . Iron data used in this paper are expressed as FeO (T) .…”

Section: D A-cn-k-fm Tetrahedronmentioning

confidence: 99%

Petrogenesis of siliciclastic sediments and sedimentary rocks explored in three-dimensional Al₂O₃–CaO^*+Na₂O–K₂O–FeO+MgO (A–CN–K–FM) compositional space

Fedo

Babechuk

2023

Can. J. Earth Sci.

View full text Add to dashboard Cite

Quantitatively determining the amount of chemical weathering within sedimentary rocks (and weathering profiles) took a major step forward with the creation of the chemical index of alteration (CIA) forty years ago. The CIA relates the proportion of immobile aluminum to the mobile cations calcium, sodium, and potassium and is grounded in empirical and modeled geochemical data for mineral reactions that occur during hydrolysis. However, the CIA should be applied cautiously because it is a one-dimensional value that in the most complex situations, as with clastic sedimentary rocks, homogenizes the compositional inputs of source, weathering, sorting, and diagenesis. Subsequently developed two-dimensional ternary diagrams (Al2O3–CaO*+Na2O–K2O; Al2O3–CaO*+Na2O+K2O–FeO+MgO) permitted the capacity to explore mineralogical-geochemical pathways in data sets that may separate those inputs, but interpreting the ternary diagrams may be complicated because they differentiate and group certain elements. Here we develop a three-dimensional tetrahedral diagram (Al2O3–CaO*+Na2O–K2O–FeO+MgO, A-CN-K-FM) that incorporates the same critical elements and permits the simultaneous assessment of felsic and mafic rocks and minerals on the same diagram, while retaining the ability to separate plagioclase from alkali feldspar and monitor post-depositional potassium changes. Using the tetrahedral plot, we show that both the CIA value and positions on the 2D ternary diagrams can generate potentially misleading interpretations without properly budgeting the ferromagnesian components in parallel. We first show how the tetrahedron works, then use it with numerous previously published examples to identify how the competing mafic and felsic inputs shape the composition of source rocks, weathering profiles, actively transporting sediment, paleosols, and sedimentary rocks in sedimentary petrogenesis.

show abstract

“…The major groups include Bradbury (investigated along the crater floor), Mount Sharp (the through‐going strata of the crater's central mound), and Siccar Point (strata that truncate and unconformably overlie the Mount Sharp group). DAN pixels are associated with stratigraphy at the member level (Fedo et al., 2022 ; Gwizd et al., 2022 ).…”

Section: Presentation Of Dan Data As Individual Pixelsmentioning

confidence: 99%

Water and Chlorine in the Martian Subsurface Along the Traverse of NASA's Curiosity Rover: 1. DAN Measurement Profiles Along the Traverse

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

Sedimentological and Geochemical Perspectives on a Marginal Lake Environment Recorded in the Hartmann's Valley and Karasburg Members of the Murray Formation, Gale Crater, Mars

Cited by 19 publications

References 132 publications

Geology and Stratigraphic Correlation of the Murray and Carolyn Shoemaker Formations Across the Glen Torridon Region, Gale Crater, Mars

Geology and Stratigraphic Correlation of the Murray and Carolyn Shoemaker Formations Across the Glen Torridon Region, Gale Crater, Mars

Petrogenesis of siliciclastic sediments and sedimentary rocks explored in three-dimensional Al₂O₃–CaO^*+Na₂O–K₂O–FeO+MgO (A–CN–K–FM) compositional space

Water and Chlorine in the Martian Subsurface Along the Traverse of NASA's Curiosity Rover: 1. DAN Measurement Profiles Along the Traverse

Contact Info

Product

Resources

About

Sedimentological and Geochemical Perspectives on a Marginal Lake Environment Recorded in the Hartmann's Valley and Karasburg Members of the Murray Formation, Gale Crater, Mars

Cited by 19 publications

References 132 publications

Geology and Stratigraphic Correlation of the Murray and Carolyn Shoemaker Formations Across the Glen Torridon Region, Gale Crater, Mars

Geology and Stratigraphic Correlation of the Murray and Carolyn Shoemaker Formations Across the Glen Torridon Region, Gale Crater, Mars

Petrogenesis of siliciclastic sediments and sedimentary rocks explored in three-dimensional Al2O3–CaO*+Na2O–K2O–FeO+MgO (A–CN–K–FM) compositional space

Water and Chlorine in the Martian Subsurface Along the Traverse of NASA's Curiosity Rover: 1. DAN Measurement Profiles Along the Traverse

Contact Info

Product

Resources

About

Petrogenesis of siliciclastic sediments and sedimentary rocks explored in three-dimensional Al₂O₃–CaO^*+Na₂O–K₂O–FeO+MgO (A–CN–K–FM) compositional space