Search Results - "McLennan, S. M."

Martian surface heat production and crustal heat flow from Mars Odyssey Gamma-Ray spectrometry by Hahn, B. C., McLennan, S. M., Klein, E. C.

“…Martian thermal state and evolution depend principally on the radiogenic heat‐producing element (HPE) distributions in the planet's crust and mantle. The…”
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High‐Frequency Receiver Functions With Event S1222a Reveal a Discontinuity in the Martian Shallow Crust by Shi, J., Plasman, M., Knapmeyer‐Endrun, B., Xu, Z., Kawamura, T., Lognonné, P., McLennan, S. M., Sainton, G., Banerdt, W. B., Panning, M. P., Wang, T.

“…The shallow crustal structure of Mars records the evolutionary history of the planet, which is crucial for understanding the early Martian geological…”
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Global Crustal Thickness Revealed by Surface Waves Orbiting Mars by Kim, D., Duran, C., Giardini, D., Plesa, A.‐C., Stähler, S. C., Boehm, C., Lekić, V., McLennan, S. M., Ceylan, S., Clinton, J. F., Davis, P., Khan, A., Knapmeyer‐Endrun, B., Panning, M. P., Wieczorek, M., Lognonné, P., Banerdt, W. B.

“…We report observations of Rayleigh waves that orbit around Mars up to three times following the S1222a marsquake. Averaging these signals, we find the largest…”
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Ancient Impact and Aqueous Processes at Endeavour Crater, Mars by Squyres, S. W., Arvidson, R. E., Bell, J. F., Calef, F., Clark, B. C., Cohen, B. A., Crumpler, L. A., de Souza, P. A., Farrand, W. H., Gellert, R., Grant, J., Herkenhoff, K. E., Hurowitz, J. A., Johnson, J. R., Jolliff, B. L., Knoll, A. H., Li, R., McLennan, S. M., Ming, D. W., Mittlefehldt, D. W., Parker, T. J., Paulsen, G., Rice, M. S., Ruff, S. W., Schröder, C., Yen, A. S., Zacny, K.

“…The rover Opportunity has investigated the rim of Endeavour Crater, a large ancient impact crater on Mars. Basaltic breccias produced by the impact form the…”
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Detection of Silica-Rich Deposits on Mars by Squyres, S.W, Arvidson, R.E, Ruff, S, Gellert, R, Morris, R.V, Ming, D.W, Crumpler, L, Farmer, J.D, Marais, D.J. Des, Yen, A, McLennan, S.M, Calvin, W, Bell, J.F. III, Clark, B.C, Wang, A, McCoy, T.J, Schmidt, M.E, de Souza, P.A. Jr

“…Mineral deposits on the martian surface can elucidate ancient environmental conditions on the planet. Opaline silica deposits (as much as 91 weight percent…”
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Sulfates hydrating bulk soil in the Martian low and middle latitudes by Karunatillake, S., Wray, J. J., Gasnault, O., McLennan, S. M., Rogers, A. D., Squyres, S. W., Boynton, W. V., Skok, J. R., Ojha, L., Olsen, N.

“…The evidence for sulfate‐bearing strata, across Late‐Noachian to Amazonian eons, suggests a central role for sulfates in acidity and salinity of Martian…”
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In situ and experimental evidence for acidic weathering of rocks and soils on Mars by Hurowitz, J. A., McLennan, S. M., Tosca, N. J., Arvidson, R. E., Michalski, J. R., Ming, D. W., Schröder, C., Squyres, S. W.

“…Experimental data for alteration of synthetic Martian basalts at pH = 0–1 indicate that chemical fractionations at low pH are vastly different from those…”
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Stratigraphy and sedimentology of a dry to wet eolian depositional system, Burns formation, Meridiani Planum, Mars by Grotzinger, J.P., Arvidson, R.E., Bell, J.F., Calvin, W., Clark, B.C., Fike, D.A., Golombek, M., Greeley, R., Haldemann, A., Herkenhoff, K.E., Jolliff, B.L., Knoll, A.H., Malin, M., McLennan, S.M., Parker, T., Soderblom, L., Sohl-Dickstein, J.N., Squyres, S.W., Tosca, N.J., Watters, W.A.

“…Outcrop exposures of sedimentary rocks at the Opportunity landing site (Meridiani Planum) form a set of genetically related strata defined here informally as…”
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Two Years at Meridiani Planum: Results from the Opportunity Rover by Squyres, S. W., Knoll, A. H., Arvidson, R. E., Clark, B. C., Grotzinger, J. P., Jolliff, B. L., McLennan, S. M., Tosca, N., Bell, J. F., Calvin, W. M., Farrand, W. H., Glotch, T. D., Golombek, M. P., Herkenhoff, K. E., Johnson, J. R., Klingelhöfer, G., McSween, H. Y., Yen, A. S.

“…The Mars Exploration Rover Opportunity has spent more than 2 years exploring Meridiani Planum, traveling ~8 kilometers and detecting features that reveal…”
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The Opportunity Rover's Athena Science Investigation at Meridiani Planum, Mars by Squyres, S. W., Arvidson, R. E., Bell, J. F., Brückner, J., Cabrol, N. A., Calvin, W., Carr, M. H., Christensen, P. R., Clark, B. C., Crumpler, L., D. J. Des Marais, d'Uston, C., Economou, T., Farmer, J., Farrand, W., Folkner, W., Golombek, M., Gorevan, S., Grant, J. A., Greeley, R., Grotzinger, J., Haskin, L., Herkenhoff, K. E., Hviid, S., Johnson, J., Klingelhöfer, G., Knoll, A. H., Landis, G., Lemmon, M., Li, R., Madsen, M. B., Malin, M. C., McLennan, S. M., McSween, H. Y., Ming, D. W., Moersch, J., Morris, R. V., Parker, T., Rice, J. W., Richter, L., Rieder, R., Sims, M., Smith, M., Smith, P., Soderblom, L. A., Sullivan, R., Wänke, H., Wdowiak, T., Wolff, M., Yen, A.

“…The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The soils consist of…”
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Geochemical modeling of evaporation processes on Mars: Insight from the sedimentary record at Meridiani Planum by Tosca, N.J., McLennan, S.M., Clark, B.C., Grotzinger, J.P., Hurowitz, J.A., Knoll, A.H., Schröder, C., Squyres, S.W.

“…New data returned from the Mars Exploration Rover (MER) mission have revealed abundant evaporites in the sedimentary record at Meridiani Planum. A working…”
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Light-toned salty soils and coexisting Si-rich species discovered by the Mars Exploration Rover Spirit in Columbia Hills by Wang, Alian, Bell III, J. F., Li, Ron, Johnson, J. R., Farrand, W. H., Cloutis, E. A., Arvidson, R. E., Crumpler, L., Squyres, S. W., McLennan, S. M., Herkenhoff, K. E., Ruff, S. W., Knudson, A. T., Chen, Wei, Greenberger, R.

“…Light‐toned soils were exposed, through serendipitous excavations by Spirit Rover wheels, at eight locations in the Columbia Hills. Their occurrences were…”
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Geochemistry and provenance of the Middle Ordovician Austin Glen Member (Normanskill Formation) and the Taconian Orogeny in New England by BOCK, BARBARA, MCLENNAN, S. M., HANSON, G. N.

“…The Austin Glen Member of the upper Middle Ordovician Normanskill Formation is a sandstone‐shale flysch succession deposited in the foreland of the Taconian…”
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Discordant K-Ar and Young Exposure Dates for the Windjana Sandstone, Kimberley, Gale Crater, Mars by Vasconcelos, P. M., Farley, K. A., Malespin, C. A., Mahaffy, P., Ming, D., McLennan, S. M., Hurowitz, J. A., Rice, Melissa S.

“…K-Ar and noble gas surface exposure age measurements were carried out on the Windjana sandstone, Kimberley region, Gale Crater, Mars, by using the Sample…”
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Visible and near-infrared multispectral analysis of rocks at Meridiani Planum, Mars, by the Mars Exploration Rover Opportunity by Farrand, W. H., Bell III, J. F., Johnson, J. R., Jolliff, B. L., Knoll, A. H., McLennan, S. M., Squyres, S. W., Calvin, W. M., Grotzinger, J. P., Morris, R. V., Soderblom, J., Thompson, S. D., Watters, W. A., Yen, A. S.

“…Multispectral measurements in the visible and near infrared of rocks at Meridiani Planum by the Mars Exploration Rover Opportunity's Pancam are described. The…”
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Nickel on Mars: Constraints on meteoritic material at the surface by Yen, A. S., Mittlefehldt, D. W., McLennan, S. M., Gellert, R., Bell III, J. F., McSween Jr, H. Y., Ming, D. W., McCoy, T. J., Morris, R. V., Golombek, M., Economou, T., Madsen, M. B., Wdowiak, T., Clark, B. C., Jolliff, B. L., Schröder, C., Brückner, J., Zipfel, J., Squyres, S. W.

“…Impact craters and the discovery of meteorites on Mars indicate clearly that there is meteoritic material at the Martian surface. The Alpha Particle X‐ray…”
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Redox stratification of an ancient lake in Gale crater, Mars by Hurowitz, J. A., Grotzinger, J. P., Fischer, W. W., McLennan, S. M., Milliken, R. E., Stein, N., Vasavada, A. R., Blake, D. F., Dehouck, E., Eigenbrode, J. L., Fairén, A. G., Frydenvang, J., Gellert, R., Grant, J. A., Gupta, S., Herkenhoff, K. E., Ming, D. W., Rampe, E. B., Schmidt, M. E., Siebach, K. L., Stack-Morgan, K., Sumner, D. Y., Wiens, R. C.

“…In 2012, NASA's Curiosity rover landed on Mars to assess its potential as a habitat for past life and investigate the paleoclimate record preserved by…”
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Effects of Chemical Weathering and Sorting on the Petrogenesis of Siliciclastic Sediments, with Implications for Provenance Studies by Nesbitt, H. W., Young, G. M., McLennan, S. M., Keays, R. R.

“…The bulk chemical compositions, mineralogy, and mineral proportions of sands and muds of the Mallacoota Basin in southeastern Australia reflect the composition…”
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Surface waves and crustal structure on Mars by Kim, D., Banerdt, W. B., Ceylan, S., Giardini, D., Lekić, V., Lognonné, P., Beghein, C., Beucler, É., Carrasco, S., Charalambous, C., Clinton, J., Drilleau, M., Durán, C., Golombek, M., Joshi, R., Khan, A., Knapmeyer-Endrun, B., Li, J., Maguire, R., Pike, W. T., Samuel, H., Schimmel, M., Schmerr, N. C., Stähler, S. C., Stutzmann, E., Wieczorek, M., Xu, Z., Batov, A., Bozdag, E., Dahmen, N., Davis, P., Gudkova, T., Horleston, A., Huang, Q., Kawamura, T., King, S. D., McLennan, S. M., Nimmo, F., Plasman, M., Plesa, A. C., Stepanova, I. E., Weidner, E., Zenhäusern, G., Daubar, I. J., Fernando, B., Garcia, R. F., Posiolova, L. V., Panning, M. P.

“…We detected surface waves from two meteorite impacts on Mars. By measuring group velocity dispersion along the impact-lander path, we obtained a direct…”
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Detrital zircon geochronology of Taconian and Acadian foreland sedimentary rocks in New England by McLennan, S. M, Bock, B, Compston, W, Hemming, S. R, McDaniel, D. K

“…U-Pb ages of detrital zircons in lower Paleozoic sedimentary rocks from New England permit evaluation of the relationships between tectonic activity and…”
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