Large impact crater histories of Mars: The effect of different model crater age techniques

Robbins, S. J.; Hynek, B. M.; Lillis, Robert J.; Bottke, W. F.

doi:10.1016/j.icarus.2013.03.019

Cited by 135 publications

(122 citation statements)

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“…For dynamic planetary surfaces like Mars however, surface erosion, burial, exhumation, and secondary cratering complicate age dating, challenging interpretations of landform formation ages (e.g. Opik, 1966;Hartmann, 1966Hartmann, , 1971Hartmann, , 2005Chapman et al, 1969;Chapman and Jones, 1977;Arvidson et al, 1979;Neukum and Hiller, 1981;Tanaka et al, , 1992Edgett, 2001, 2003;Werner, 2005Werner, , 2009Smith et al, 2008;Michael and Neukum, 2010;Robbins and Hynek, 2012;Robbins et al, 2013). Model ages are often described as crater retention ages, accounting for pervasive erosive processes that operated across Mars.…”

Section: Introductionmentioning

confidence: 99%

“…Craters with diameters of order 10 2 m, with depths of tens of meters (Garvin et al, 2000(Garvin et al, , 2003, are particularly susceptible to crater resurfacing, often providing significantly lower ages relative to the km-sized population (e.g. Strom et al, 1992;Tanaka et al, 1992;Robbins and Hynek, 2012;Robbins et al, 2013). Multiple CTX image strips, covering a broad area, therefore can reveal information regarding not only the time since a landform first began accumulating large km-sized craters (often used in geologic mapping to represent the relative formation age of that terrain), but of geologic processes that have influenced the uppermost few meters of the landform's surface.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Minimum effective area for high resolution crater counting of martian terrains

Warner

Gupta

Calef

et al. 2015

Icarus

124

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Minimum effective area for high resolution crater counting of martian terrains

Warner

Gupta

Calef

et al. 2015

Icarus

124

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“…Lava sheets with volcanic spatter cones represent a common feature in many areas of the surface of Mars (Kereszturi and Németh, 2012;Robbins et al, 2013). On Earth such volcanic rocks often exhibit distinct magnetic anomalies (e.g.…”

Section: Site 2: "Pali Aike"mentioning

confidence: 99%

Mars MOURA magnetometer demonstration for high-resolution mapping on terrestrial analogues

Díaz-Michelena

Kilian

Sanz

et al. 2016

Geosci. Instrum. Method. Data Syst.

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Abstract. Satellite-based magnetic measurements of Mars indicate complex and very strong magnetic anomalies, which led to an intensive and long-lasting discussion about their possible origin. To make some progress in the investigation of the origin of these anomalies the MOURA vector magnetometer was developed for in situ measurements on Mars. In this work we propose the utilisation of such an instrument for future planetary on-ground surveys. The proof of its suitability is seen through testing it on various terrestrial analogues characterised by the distinct magnetic anomalies of their basement rocks: (1) a magnetite body of EL Laco (up to +110 000 nT) and its transition to surrounding andesites (< +2000 nT) in the northern Andes of Chile showing the highest local magnetic anomalies. The magnetite-bearing ore body has highly variable local anomalies due to its complex formation history where a significant dispersion in palaeoorientations has been previously reported, while our vector data show relatively uniform and probably induced declinations. (2) A basaltic spatter cone of the Pali Aike volcanic field, in southern Chile, was characterised by very strong magnetic anomalies along the crater rim (up to +12 000 nT), controlled by the amount of single domain magnetites in the ground mass of the basalts. Due to their strong remanent signature, palaeo-declinations of the lavas and reorientations of collapsed blocks could be constrained by the vector data. (3) The Monturaqui meteorite crater (350 m diameter), in northern Chile, shows significant variations of its anomalies (from −2000 to > +6000 nT) in restricted areas of several square metres along its crater rim related to unexposed iron-bearing fragments of the impactor while its granitic and ignimbritic target rocks exhibit only very weak anomalies. (4) An area with several amphibolitic dykes, which cross-cut a Cretaceous granitoid in the southernmost Andes, where a decimetre-scale mapping was performed. In this case, pyrrhotite is the only magnetic carrier. It was formed during hydrothermal processes within the dykes. Very low (+40 to +120 nT) positive magnetic anomalies clearly depict the amount of 1-4 vol % pyrrhotite in these dykes, which is important as a mineralogical indicator as well as to detect associated gold and copper enrichment.

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“…5C-E ;Diaz Michelena et al, 2016). Such volcanic formations represent common features in many martian areas (Kereszturi and Németh, 2012;Robbins et al, 2013). On Earth such volcanic rocks often exhibit distinct magnetic anomalies (e.g.…”

Section: Física De La Tierramentioning

confidence: 99%