Impact of geological origin on flotation separation of apatite from dolomite using β-naphthyl sulfonate formaldehyde condensate as depressant

Chapter 2 presents the amazing variety of running waters, lakes, ponds, and wetlands found at high altitudes. These waterbodies are not equally distributed among the world’s high altitude places, but tend to be concentrated in certain areas, primarily determined by regional climate and topography. Thus, a large proportion of the world’s truly high altitude aquatic systems are found at lower latitudes, mostly in the tropics. The chapter presents general patterns in the geographical distribution of high altitude waters, and gives examples of some of the most extreme systems. High altitude aquatic systems and habitats cover a broad variety in dynamics and physical appearance. These differences may be related to, for example, water source (glacier-fed, rain-fed, or groundwater-fed streams), geological origin (e.g. glacial, volcanic, or tectonic lakes), or catchment slope and altitude (different types of peatland wetlands). This is exemplified and richly illustrated through numerous photos.

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Quantitative Expression of the Burial Phenomenon of Deep Seafloor Manganese Nodules

Minerals ◽

10.3390/min11020227 ◽

2021 ◽

Vol 11 (2) ◽

pp. 227

Author(s):

Akira Tsune

Keyword(s):

Recent Progress ◽

Mathematical Expression ◽

Mineral Resources ◽

Economic Potential ◽

Visual Data ◽

Manganese Nodules ◽

Quantitative Expression ◽

Size Number ◽

Polymetallic Nodules ◽

Geological Origin

Manganese (polymetallic) nodules on the deep seafloor in the open ocean have attracted great interest because of their economic potential. Visual data on nodules found on the deep seafloor such as photographs and videos have increased exponentially with the recent progress of related technologies. These data are expected to reflect useful information for estimating these mineral resources, as well as understanding their geological origin. Although the size, number, and coverage of manganese nodules have been measured in seafloor images, the burial of such nodules has not been sufficiently examined. This paper focuses on mathematical expression of the burial of the manganese nodules and attempts to quantitatively elucidate relations among burial degree and nodule geological parameters. The results, that is, a dataset obtained by calculations of relations among parameters, are also utilized for considerations of quantitative expression of burial. These considerations are expected to contribute to a better understanding of the geological origin of manganese nodules.

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A vegetation description and floristic analyses of the springs on the Kammanassie Mountain, Western Cape

Koedoe ◽

10.4102/koedoe.v47i2.78 ◽

2004 ◽

Vol 47 (2) ◽

Cited By ~ 3

Author(s):

G. Cleaver ◽

L.R. Brown ◽

G.J. Bredenkamp

Keyword(s):

Plant Communities ◽

Western Cape ◽

Ecological Processes ◽

Mountain Catchment ◽

Habitat Factors ◽

Management Plans ◽

Twinspan Classification ◽

Geological Origin ◽

The Difference

The Kammanassie Mountain is a declared mountain catchment area and a Cape mountain zebra Equus zebra zebra population is preserved on the mountain. The high number of springs on the mountain not only provides water for the animal species but also contributes to overall ecosystem functioning. Long-term conservation of viable ecosystems requires a broader understanding of the ecological processes involved. It was therefore decided that a classification, description and mapping of the spring vegetation of the Kammanassie Mountain be undertaken. A TWINSPAN classification, refined by Braun-Blanquet procedures, revealed 11 major plant communities that could be related to geological origin. Habitat factors associated with differences in vegetation include topography, soil type and grazing. Descriptions of the plant communities include diagnostic species as well as prominent and less conspicuous species of the tree, shrub and herbaceous layers. The results also indicate a high species richness compared to similar regions and the difference between plant communities of wet and dry springs. This data is important for long-term monitoring of the spring ecosystems as well as for the compilation of management plans.

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Soil properties in relation to the occurrence of grass sickness in horses

The Journal of Agricultural Science ◽

10.1017/s0021859600049054 ◽

1941 ◽

Vol 31 (3) ◽

pp. 308-319 ◽

Cited By ~ 5

Author(s):

A. B. Stewart

Keyword(s):

Soil Acidity ◽

Acid Soils ◽

Limited Range ◽

Point Of View ◽

Grass Sickness ◽

Geological Origin ◽

The Common ◽

Common Plant ◽

Range Of Values ◽

Pasture Plants

Any conclusions drawn from the foregoing results will of course apply only to the necessarily limited range of soils in one county. This range is limited geologically and the Aberdeenshire soils belong largely to the class of light to medium acid soils of low base status. The results for these soils indicate that:(a) The occurrence of grass sickness is not confined to soils of any particular geological origin.(b) The range of textural conditions in the soils examined is a wide one covering loams, sands and peaty types with a few moderately heavy soils. There does not appear to be any relationship between soil texture and the incidence of grass sickness.(c) The soils examined all fall into the class of acid soils and in only a very few—about 5 to 10%—could the addition of lime be considered unnecessary from the general agricultural point of view. As against this there are no striking abnormalities in the ratios of exchangeable or readily soluble cations in the soils, which might serve as a clue to the occurrence of grass sickness. Although little is known of the actual magnesium, manganese and strontium requirements of hay and pasture plants, the range of values covered in the soils examined is sufficiently wide to make it very unlikely that there is any relationship between the incidence of grass sickness and the magnesium, manganese or strontium contents of the soil. In view of the relatively widespread acidity in the soils examined, the possibility of a relationship between the occurrence of grass sickness and soil acidity has to be borne in mind. It would be of value to find out if grass sickness occurs to an appreciable extent on limestone soils, or on soils which have been systematically limed and which have pK values in the neighbourhood of 7.(d) The majority of the soils are, from the general agricultural point of view, somewhat low in readily soluble or available potash and phosphate, but against this about 30% of the soils have satisfactory phosphate contents and about 20% of the ordinary surface soils and 46% of the top 2 in. samples, in which occur the bulk of the plant roots, have satisfactory potash contents. It does not appear likely therefore that the occurrence of grass sickness is to be related directly to the phosphate and potash contents of the soil. As far as reserves of the common plant foods are concerned there is likewise no abnormality which could account for the disease.

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Performance of Sample Preparation for Determination of Gold in Samples of Geological Origin

Geostandards and Geoanalytical Research ◽

10.1111/ggr.12278 ◽

2019 ◽

Vol 43 (3) ◽

pp. 435-452 ◽

Cited By ~ 2

Author(s):

Lou Daniel ◽

Brenton R. Clarke ◽

Drew F. Parsons

Keyword(s):

Sample Preparation ◽

Geological Origin

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Research of the Theban limestone: The case of Temple of Hatshepsut in Deir el-Bahari

E3S Web of Conferences ◽

10.1051/e3sconf/20184900021 ◽

2018 ◽

Vol 49 ◽

pp. 00021

Author(s):

Teresa Dziedzic ◽

Mieczysław Michiewicz

Keyword(s):

Tensile Strength ◽

Microscopic Analysis ◽

Strength Parameters ◽

Architectural Elements ◽

Endurance Tests ◽

Geological Origin ◽

Everyday Problems ◽

The Temple

Authors of this article wish to collect previous research and broaden knowledge about limestone used for construction of the Temple of Hatshepsut and present results of the latest studies. The main purpose of the studies was to obtain information about tensile strength when bending architectural elements made of limestone. It will allow - among others - the span of architraves on which vault blocks, architrave and ceiling slabs with cornices and railings to be established, as well as their acceptable strength parameters. Theban limestone research most often focuses on the geological origin of this material and its microscopic analysis. These tests are supplemented by endurance tests necessary for the work of engineers and architects who work on the reconstruction or exhibition of the ancient temples. The authors of many years of work in Polish - Egyptian Archeology - Conservation Mission at the Temple of Hatshepsut at Deir el-Bahari solve everyday problems associated with exposure and reconstruction of the monument.

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Geochemical behavior of hazardous volatile elements in coals with different geological origin during combustion

Fuel ◽

10.1016/j.fuel.2018.06.069 ◽

2018 ◽

Vol 233 ◽

pp. 361-376 ◽

Cited By ~ 13

Author(s):

Guangqing Hu ◽

Guijian Liu ◽

Dun Wu ◽

Biao Fu

Keyword(s):

Volatile Elements ◽

Geochemical Behavior ◽

Geological Origin

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The Romanesque monastery church Maria Laach, their natural building blocks and their geological origin

Jahresberichte und Mitteilungen des Oberrheinischen Geologischen Vereins ◽

10.1127/jmogv/101/0012 ◽

2019 ◽

Vol 101 ◽

pp. 287-312

Author(s):

Karl-Heinz Schumacher

Keyword(s):

Building Blocks ◽

Geological Origin ◽

Natural Building

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XVI.—Quantitative Evolution. III. Dp-ages of Gramineæ

Proceedings of the Royal Society of Edinburgh ◽

10.1017/s0370164600013766 ◽

1938 ◽

Vol 57 ◽

pp. 221-227

Author(s):

James Small

Keyword(s):

Time Scale ◽

Evolutionary History ◽

Geological Time ◽

Exponential Curve ◽

The Family ◽

History Of ◽

Geological Origin ◽

Fossil Records

Applying Udny Yule's formulæ (1924) to the Compositæ, Small (1937) found that the average ages in doubling periods (Dp-ages) of the tribes of Compositæ, when plotted against a time-scale, gave points on an exponential curve called the BAT curve. If this curve is characteristic of average families of Angiosperms it should be possible to place the Dp-ages of tribes within other families on this curve as plotted against geological time, and thus obtain an order of geological origin which is quite independent of actual fossil records and which can be checked against any facts known concerning the evolutionary history of the family.

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