Characterization of lava-flow degradation in the Pisgah and Cima volcanic fields, California, using Landsat Thematic Mapper and AIRSAR data

Arvidson, R. E.; Shepard, Michael K.; Guinness, E. A.; Petroy, S. B.; Plaut, J.; Evans, Diane L.; Farr, T. G.; Greeley, R.; Lancaster, Nicholas; Gaddis, L. R.

doi:10.1130/0016-7606(1993)105<0175:colfdi>2.3.co;2

Cited by 23 publications

(11 citation statements)

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“…[]; Arvidson et al . []). Coarse‐grained calcite and disordered carbon (identified by Raman spectroscopy) occur in vesicles, but their occurrences are not spatially correlated with the iddingsite and were probably deposited later (presumably derived from the aeolian mantle surrounding the flow).…”

Section: Geologic Setting and Sample Descriptions Of Alterationmentioning

confidence: 99%

A comparison of the iddingsite alteration products in two terrestrial basalts and the Allan Hills 77005 martian meteorite using Raman spectroscopy and electron microprobe analyses

Kuebler

2013

JGR Planets

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[1] We document the secondary mineral assemblages in two occurrences of terrestrial iddingsite, Lunar Crater, Nevada (LC) and Mauna Kea, Hawaii (MK), and compare these with the iddingsite in Allan Hills (ALHA) 77005. Short Raman spectroscopic traverses across olivine alteration fronts provide information about changes in mineralogy with alteration. Data from the Raman traverses are combined with electron microprobe (EMP) traverses at the same locations which provide information regarding element mobility and confirm mineral identifications made by Raman spectroscopy. This information is used with petrographic observations to argue for the martian origin of the iddingsite and jarosite, infer the sequence of alteration, and deliberate on the conditions and settings of alteration. Raman spectra indicate the presence of different iron oxides/oxyhydroxides in each sample (goethite in LC, maghemite in MK, and akaganéite in ALHA), and the terrestrial samples show different element mobility trends (loss of MgO and SiO 2 , retention of FeO) than ALHA (loss of MgO and FeO, influx of SiO 2 ), whose trends reflect the deposition of jarosite. Altered olivine occur throughout the LC samples but only in the exteriors of the MK samples. The LC and MK alteration products formed by surface alteration, but ALHA 77005 is a lherzolite, and the olivine hosting the iddingsite are enclosed by orthopyroxene (appear to be restricted to the light lithology), suggesting that it formed at depth during magma consolidation. The ALHA iddingsite is an example of "deuteric alteration" (reaction with fluids that separated from the magma as crystallization progressed towards completion).Citation: Kuebler, K.E. (2013), A comparison of the iddingsite alteration products in two terrestrial basalts and the Allan Hills 77005 martian meteorite using Raman spectroscopy and electron microprobe analyses,

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Section: Geologic Setting and Sample Descriptions Of Alterationmentioning

confidence: 99%

A comparison of the iddingsite alteration products in two terrestrial basalts and the Allan Hills 77005 martian meteorite using Raman spectroscopy and electron microprobe analyses

Kuebler

2013

JGR Planets

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“…This surface is characterized by rms surface heights of -1.4 cm, primarily in the form of polygonal mud cracks (Table 1, Figiire 12) [Arvidson et al, 1993]. Field probe measurements indicate a real dielectric constant of 2.36 for this surface [van Zyl et al, 1991], but the actual values are iikety quite variable due to changes in moisture content.…”

Section: Lavic Lake Playamentioning

confidence: 99%

“…Several authors have considered the issue of surface scattering using these new data, and have compiled backscatter crosssection values for volcanic and playa surfaces [Plant, 1991;Gaddis, 1992;Campi>«i/ and Campbell, 1992;Arvidson et al, 1993]. Gaddii [1992] analyzed AIRSAR data for Pisgah volcanic field, and discussed the optimum radar parameters for discritnination of pahoehoe, a'a, and playa surfaces.…”

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confidence: 99%

Radar polarization properties of volcanic and playa surfaces: Applications to terrestrial remote sensing and Venus data interpretation

Campbell¹,

Arvidson²,

Shepard³

1993

J. Geophys. Res.

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The radar polarization properties of lava flows in Hawaii (Kilauea) and Arizona (SP flow), and two playa suifaces (Lunar Lake. Nevada and Lavic Lake, California), are compared to the predicted bebaviors of theoretical scattering models. At 5,7 ctn and 24 cm wavelengths, Kilauea lava flows can be modeled by a combination of facet and diffuse (dipole-Iike) scattering. Scattering by rock foces on the scale of the radar wavelength is proposed to account for much of the facet letum. The tadar echoes at 24-cni wavelength íioia SP flow are. on average, consistent with entirely diffuse scattering, but there are regions within the flow where circular polarization ratios exceed unity, suggesting a coherent scattering effect 68 cm data for the lava flows show evidence of radar penetration and volume scattering. The playa surfaces are characterized by polarization properties which in some cases are qualitatively consistent with the first-order smallperturbation model, but the echoes do not closely match the predictions of this model for any reasonable dielectric constant value. These results show that it may be difficult to construct invertible models for the polarization behavior of some surfaces (the playas), whereas for others (the Kilauea lava flows) the scattering properties can be successfully modeled. The first-order small-petturiïation model is not aj^jnqiriate for inverse modeling of most terrestrial lava flows, though very smooth surfaces on Venus may be amenable to the use of this model. High circular polarization ratios observed for SP flow, tentatively attributed here to ccberent backscatter, may be analogous to Aiecibo observations of high'teflectivity areas on Venus. iNJTRODUCnONImaging radar systems are an important geologic remote sensing tool for terrestrial and planetary applications. The sensitivity of radar backscatter tneasuiements to roughness on cm to meter scales and to variations in bulle dielectric properties makes them useful for tnapping out differences in surface morphology, density, and reflectivity. Airborne and spacebome radar systems are in use and being developed which offer the possibility of rapid hi g h-resolution mapping of terrrestrial volcanic surface structure . For Venus, microwave remote sensing provides our only view of títe sircface on a global scale, so interpreting radar data is a crucial part of assembling a geologic frameworlc for this planet [Saunders et ai, 1992].A fundamental issue in radar remote sensing is the relationship between surface roughness and dielectric parameters and the intensity; polarization, and angular dependence of the backscattered wave. Over the past thirty years, several models for surface scattering have been widely used: the quasi-specular or physical optics model [Hagfors, 1964; PettengUl et al., 1988;Tyler et al., 1992], the smallperturbation approach [Barrick and Peake, 1967], coherent backscatter theory [Hapke, 1990], und "diffuse" scattering models [Ford and Senske, 1990], Aspects of these models were often discussed in analyses of terrestrial...

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“…Interpretation of data from planetary missions requires an understanding of related phenomena on Earth, a task that often includes a search for appropriate terrestrial analogues to planetary features. The Magellan radar mapping mission to Venus revealed a variety of volcanic features, and the interpretation of the radar images inspired a number of studies utilizing radar remote sensing of terrestrial volcanoes and lava flows [e.g., Greeley and Martel, 1988;Ford et al, 1989;Gaddis et al, 1989Gaddis et al, , 1990Campbell and Campbell, 1992;Arvidson et al, 1993;Mouginis-Mark, 1995;Campbell and Shepard, 1996]. A remarkable finding from Magellan was a class of apparently volcanic landforms referred to as ''steep-sided'' or ''pancake'' domes Pavri et al, 1992;McKenzie et al, 1992;Fink et al, 1993;Bridges, 1997;Stofan et al, 2000].…”

Section: Introductionmentioning

confidence: 99%

The unique radar properties of silicic lava domes

et al. 2004

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[1] Silicic lava domes exhibit distinct morphologic characteristics at scales of centimeters to kilometers. Multiparameter radar observations capture the unique geometric signatures of silicic domes in a set of radar scattering properties that are unlike any other natural geologic surfaces. Backscatter cross-section values are among the highest observed on terrestrial lava flows and show only a weak decrease with incidence angle. Crosspolarization backscatter (HV) shows a unique behavior, increasing with increasing wavelength. Circular polarization ratios are relatively high, in the 0.3-0.95 range, and increase with increasing wavelength. Field measurements of boulder size frequency distributions and microtopography indicate that silicic dome surfaces are among the roughest ever measured. Rms heights at a 1 m lateral scale range from 13 cm to 50 cm. Rms slopes at 1 m spacing range from 12 to 43 degrees. Modeling of the scattering behavior suggests it results from a combination of rough surface (facet) scattering and scattering from block edges that act as a random collection of dipoles. The unusual wavelength dependence of the radar parameters appears to result from a higher component of edge scattering at large wavelengths, producing, for example, higher cross-polarized backscatter at P band (68 cm). Steep-sided volcanic domes on Venus superficially resemble terrestrial silicic domes in plan view gross morphology, but few similarities remain when the radar scattering and three-dimensional shapes of the features are compared. The unique radar scattering properties suggest that such volcanic surfaces can be identified with multiparameter radar observations in future planetary radar missions and in active terrestrial volcanoes, where dome development can represent serious hazards.

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Characterization of lava-flow degradation in the Pisgah and Cima volcanic fields, California, using Landsat Thematic Mapper and AIRSAR data

Cited by 23 publications

References 0 publications

A comparison of the iddingsite alteration products in two terrestrial basalts and the Allan Hills 77005 martian meteorite using Raman spectroscopy and electron microprobe analyses

A comparison of the iddingsite alteration products in two terrestrial basalts and the Allan Hills 77005 martian meteorite using Raman spectroscopy and electron microprobe analyses

Radar polarization properties of volcanic and playa surfaces: Applications to terrestrial remote sensing and Venus data interpretation

The unique radar properties of silicic lava domes

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