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habitability

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Journal Article
Journal: PALAIOS
Published: 01 January 2016
PALAIOS (2016) 31 (1): 1-9.
... with the organic carbon content; however, there was a significant dependence on the oxidant activity present in these soil samples evaluated as the capacity to decompose sodium formate in 10 hours. We suggest that the analysis of oxidant activity could be a useful indicator of the microbial habitability in hyper...
FIGURES
Journal Article
Published: 01 November 2014
American Mineralogist (2014) 99 (11-12): 2163-2164.
... by Mars Science Laboratory at Gale Crater. The martian saponite is likely diagenetic, rather than clastic, and thus may represent the presence of a once-habitable fluvio-lacustrine environment on Mars The presence of CheMin—a novel transmission X-ray diffraction instrument with a Co K α source ( Blake...
FIGURES
Journal Article
Journal: PALAIOS
Published: 01 June 2014
PALAIOS (2014) 29 (6): 231-232.
... in the GSL environment and the role of diagenesis in masking depositional conditions from season to season (wet versus dry) and over deep time. Copyright © 2014, SEPM (Society for Sedimentary Geology) 2014 Notions about the “habitability” of Earth are being tested by microbial diversity studies...
FIGURES
Journal Article
Published: 01 March 2018
American Mineralogist (2018) 103 (3): 394-411.
..., amorphous patches or mineral coatings on pyrite. Interestingly, the mineral habit and size is related to the location where the acidic sulfates precipitate with regard to the subsurface water level. Amorphous Fe-sulfate coatings and rosettes ( Figs. 6 a– 6 c) have been found below the water table, while...
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Series: GSA Special Papers
Published: 01 January 2009
DOI: 10.1130/2009.2458(42)
Journal Article
Published: 01 May 1940
American Mineralogist (1940) 25 (5): 338-356.
...Clifford Frondel Abstract The effect of 143 inorganic and organic cosolutes, other than dyes, on the crystal habit of NaF was investigated experimentally. The cosolutes which effect variation from the ordinary cubical habit of NaF fall into two groups: Cosolutes which contribute OH ion...
Journal Article
Published: 01 September 1926
American Mineralogist (1926) 11 (9): 221-239.
...Albert J. Walcott Abstract The influences of the following factors on crystal habit were investigated: Temperature of pure aqueous solutions. Presence of inorganic compounds in solution. Presence of organic compounds in solution. Presence of thickening substances. Presence of suspensions. Crystals...
Journal Article
Published: 01 December 2016
American Mineralogist (2016) 101 (12): 2716-2722.
... Asia (Vietnam). Trace-element compositions indicative for different corundum habits were determined by rim-to-rim LA-ICP-MS and electron microprobe analyses. Raman spectroscopy was applied for Cr 3+ photoluminescence mapping. Results traced the development of corundum crystals and the evolution...
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Journal Article
Journal: Paleobiology
Published: 01 May 2007
Paleobiology (2007) 33 (2): 273-294.
... instead on life habits, which are repeatedly discovered by taxa because of convergence. Such an approach is applied to a comparison of the ecological diversity of Paleozoic (Cambrian–Devonian) and modern marine biotas from deep-subtidal, soft-substrate habitats. Ecological diversity (richness...
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Journal Article
Published: 01 February 1965
American Mineralogist (1965) 50 (1-2): 44-72.
... vanadates mo vbdates, and tungstates using a modified Kruger-Fincke method have essentially four basic habits, i.e., platy, prismatic, hemi-pyramidal, and dendritic, although intermediate developments also were observed. The important parameter determining whether a crystal be elther a plate (length/width...
Journal Article
Published: 01 January 2013
American Mineralogist (2013) 98 (1): 66-77.
...Daniel Howell; William L. Griffin; Sandra Piazolo; Jana M. Say; Richard A. Stern; Thomas Stachel; Lutz Nasdala; James R. Rabeau; Norman J. Pearson; Suzanne Y. O’Reilly Abstract Mixed-habit diamonds have experienced periods of growth where they were bounded by two surface forms at the same time...
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Journal Article
Published: 01 May 1998
Journal of Paleontology (1998) 72 (3): 418-436.
... of paleoenvironmental analyses based on skeletons alone. Existing bryozoan colonial growth from classifications do not, however, fully exploit the ecological information present in colony form. A new scheme is proposed here (Analytical Bryozoan Growth Habit Classification), which provides a list of colony-level...
Journal Article
Journal: Economic Geology
Published: 01 June 1961
Economic Geology (1961) 56 (4): 758-771.
... of the 31 samples. The samples varied in crystal habit from simple cubes through mixed forms to octahedrons. The concentrations were found to vary widely from one mineralized area to another; but within a given district, crystals of cubic habit are systematically enriched in Sb compared to those...
Journal Article
Published: 01 February 1940
American Mineralogist (1940) 25 (2): 91-110.
...Clifford Frondel Abstract The effect of 112 dyes on the crystal habit and optics of NaF, LiF, NaCl, KCl, KBr and KI was investigated experimentally. A few dyes are adsorbed on {111} and cause variation from the ordinary cubical habit to octahedral. Most dyes are adsorbed, if at all, by {100}. Habit...
Journal Article
Journal: Paleobiology
Published: 01 May 2016
Paleobiology (2016) 42 (2): 185-208.
... of functional diversification within a life-habit ecospace framework (functional-trait space). The models also incorporate concepts in community assembly, functional diversity, evolutionary diversification, and morphological disparity. The redundancy model produces an ecospace composed of clusters...
FIGURES
Journal Article
Published: 01 February 2006
Clays and Clay Minerals (2006) 54 (1): 87-100.
... silicates and produces new Fe oxides. The serpentine minerals crystallize under different habits issued from the serpentinization processes: mesh and hourglass pseudomorphic textures were formed from olivine, and thin-bladed pseudomorphic textures from pyroxene and amphibole crystals. Serpentine veins...
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Journal Article
Published: 01 August 1986
American Mineralogist (1986) 71 (7-8): 916-923.
... are localized along organic-rich seams in silty micrite, in intimate association with postfolding quartz veinlets. They display two distinct habits. Earlier adularia of the Felsöbanya habit are Ba zoned with typical core compositions near K (0.760) Ba (0.180) Al (1.161) Si (2.849) O 8 and edges near K (0.935...
Image
Subordinate calcite <b>habits</b> in the Vertisol.  A)  Round-shaped nodule compos...
Published: 16 May 2019
Fig. 12.— Subordinate calcite habits in the Vertisol. A) Round-shaped nodule composed of an inequigranular coarse mosaic of calcite. Plane-polarized light. B) CL image of nodule, presenting a fine, brightly speckled pattern of luminescence. C) Fracture filled with poikilotopic calcite
Image
Field views illustrating the variation in spacing, size, and growth <b>habit</b> o...
Published: 11 February 2019
Fig. 4.— Field views illustrating the variation in spacing, size, and growth habit of the mounds along the studied interval in outcrop A) Ricla 2A and B) Ricla 1A. Isolated, small-size, dome-shaped mounds characterize F-A. F-B shows isolated, larger domal structures that result from
Image
Sketch showing the variations in mound morphology, type, and growth <b>habit</b> o...
Published: 11 February 2019
Fig. 15.— Sketch showing the variations in mound morphology, type, and growth habit of sponges, marl content, relative abundance of pelagic organisms (ammonites and belemnites), and open marine, thin-shelled ( Bositra -like) bivalves settled from the water column and dispersed in the micrite