Imperial College London
Professor Sanjeev Gupta

ProfessorSanjeevGupta

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Earth Science
 
 
 
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Contact

 

+44 (0)20 7594 6527s.gupta

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yingst:2016:10.1016/j.icarus.2016.03.001,
author = {Yingst, RA and Cropper, K and Gupta, S and Kah, LC and Williams, RME and Blank, J and Calef, F and Hamilton, VE and Lewis, K and Shechet, J and McBride, M and Bridges, N and Martinez, Frias J and Newsom, H},
doi = {10.1016/j.icarus.2016.03.001},
journal = {Icarus},
pages = {72--92},
title = {Characteristics of pebble and cobble-sized clasts along the Curiosity rover traverse from sol 100 to 750: Terrain types, potential sources, and transport mechanisms},
url = {http://dx.doi.org/10.1016/j.icarus.2016.03.001},
volume = {280},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We combine the results of orbitally-derived morphologic and thermal inertia data with in situ observations of abundance, size, morphologic characteristics, and distribution of pebble- to cobble-sized clasts along the Curiosity rover traverse. Our goals are to characterize rock sources and transport history, and improve our ability to predict upcoming terrain. There are ten clast types, with nine types interpreted as sedimentary rocks. Only Type 3 clasts had morphologies indicative of significant wear through transport; thus, most clast types are indicative of nearby outcrops or prior presence of laterally extensive sedimentary rock layers, consistent with the erosional landscape. A minor component may reflect impact delivery of more distant material. Types 1 and 4 are heavily-cemented sandstones, likely associated with a “caprock” layer. Types 5 and 6 (and possibly 7) are pebble-rich sandstones, with varying amounts of cement leading to varying susceptibility to erosion/wear. Type 3 clasts are rounded pebbles likely transported and deposited alluvially, then worn out of pebbly sandstone/conglomerate. Types 9 and 10 are poorly-sorted sandstones, with Type 9 representing fragments of Square Top-type layers, and Type 10 deriving from basal or other Mt. Sharp layers. Types 2, 8 and 9 are considered exotics.There are few clear links between clast type and terrain surface roughness (particularly in identifying terrain that is challenging for the rover to navigate). Orbital data may provide a reasonable prediction of certain end-member terrains but the complex interplay between variables that contribute to surface characteristics makes discriminating between terrain types from orbital data problematic. Prediction would likely be improved through higher-resolution thermal inertia data.
AU  - Yingst,RA
AU  - Cropper,K
AU  - Gupta,S
AU  - Kah,LC
AU  - Williams,RME
AU  - Blank,J
AU  - Calef,F
AU  - Hamilton,VE
AU  - Lewis,K
AU  - Shechet,J
AU  - McBride,M
AU  - Bridges,N
AU  - Martinez,Frias J
AU  - Newsom,H
DO  - 10.1016/j.icarus.2016.03.001
EP  - 92
PY  - 2016///
SN  - 0019-1035
SP  - 72
TI  - Characteristics of pebble and cobble-sized clasts along the Curiosity rover traverse from sol 100 to 750: Terrain types, potential sources, and transport mechanisms
T2  - Icarus
UR  - http://dx.doi.org/10.1016/j.icarus.2016.03.001
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000384629200005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/42605
VL  - 280
ER  -
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