(discontinuities). Results and discussion about the granulometrical, chemical and mineralogical data. Scanning electron microscopy demonstrated that active slide surfaces have an open texture, clay minerals are impoverished and non-oriented, whereas secondary
phases (hematite and gypsum) are enriched. There is a relationship between geotechnical features and mineralogical composition.
Mineralogical and geomorphological characterization of sand dunes in the eastern part of United Arab Emirates using orbital remote sensing integrated with field investigations
Arid area ; Dune ; Grain size distribution ; Heavy minerals ; LANDSAT ; Mineralogy ; Remote sensing ; Sediment transport ; United Arab Emirates
In this study, Landsat 7 ETM+ data sets were used to study the geomorphology and mineralogy of different dune types in the eastern part of Abu Dhabi in United Arab Emirates. The extraction and mapping of the dominant mineral phase
of the investigated sand dunes were carried out using image processing integrated with field techniques. The results show that multispectral data can be used to differentiate between different dune types and their associated mineralogy, and to reveal information
The role of mineralogy, geochemistry and grain size in badland development in Pisticci (Basilicata, Southern Italy)
Arid area ; Badland ; Basilicata ; Clay mineral ; Geochemistry ; Grain size distribution ; Italy ; Mineralogy ; Semi-arid area ; Soil erosion ; Soil properties
Mineralogical, geochemical and grain-size composition of soil and pore-water chemistry parameters were characterized on both eroded (south-facing) and non-eroded (north-facing) clayey-silt slopes in the Basilicata region (southern Italy
). The results of this study show that the erosional mechanism involves morphological and geographic exposure and climatic elements as well as grain size, mineralogy, chemistry and exchangeable processes of soils.
Profiles with multiple paleosols developed in loess at Kapela-Batajnica and Stalać were studied by chemical, physical and mineralogical methods to determine paleoclimatic changes through the Pleistocene. The cyclic nature of sedimentary
and pedogenetic processes is indicated by the CaCO3 content and silt and clay mineralogy. These 2 profiles provide an opportunity to compare the paleoclimatic history of 2 areas, one (Kapela-Batajnica) with an essentially continental influence similar
Arid area ; Chemical erosion ; Clay mineral ; Gneiss ; Italy ; Mediterranean area ; Micromorphology ; Mineralogy ; Sicilia ; Weathering
The effects of weathering in a Mediterranean climate on the mineralogy and microfabric of Paleozoic gneiss of the Sila Massif, Calabria, have been studied. Micromorphological and mineralogical properties of bedrock and saprolite show
Biogenic process ; Geochemistry ; Hydrothermal ; Iron ; Manganese ; Mineralization ; Mineralogy ; Oceanic ridge ; Sea floor
This paper describes the occurence and distribution of Fe and Mn oxides associated with hydrothermal activity on the mid-ocean ridges and discusses some of the mineralogical and chemical characteristics of the Fe and Mn precipitates. Studies of Fe
and Mn oxides at seafloor hydrothermal vents have focussed primarily on the inorganic precipitation of metals, but routine mineralogical and chemical analyses of these deposits reveal abundant microbial forms and organic carbon which suggest
Influence of climate and eolian dust on the major-element chemistry and clay mineralogy of soils in the northern Bighorn Basin, U.S.A.
The major-element and zirconium composition of the silt-plus-clay (fine) and sand fractions and the clay mineralogy of soils in three chronosequences formed under different climates (subhumid, semiarid, and arid) are used to characterize
Chemical and mineralogical changes in a polygenetic soil of Galicia, NW Spain
The soils of Galicia, NW Spain, developed on gabbro often include one or more buried profiles. In this paper, the AA. compare chemical and mineralogical data for a modern and a buried soil to clarify the pedogenetic and landscape history on gabbro
others formed on clay marl and one soil formed on gypsiferous marl. The profiles have been analyzed for the mineralogy and the chemical composition of original materials, soils developed above them and clay fractions. Fundamentally, it is the semiarid
Textural, geochemical and mineralogical evidence for the origin of Peoria loess in central and southern Nebraska, USA
Aeolian features ; Fluvioglacial features ; Geochemistry ; Loess ; Mineralogy ; Model ; Nebraska ; Palaeogeography ; Pleistocene ; Rocky Mountains ; Statistics ; United States of America
Possible sources of Peoria loess in central Nebraska have been investigated through the fingerprinting of the textural, geochemical and mineralogical characteristics of the loess and possible source sediments, with statistical comparison