Results 11 to 20 of about 17,616 (304)

Geochemistry, environmental and provenance study of the Middle Miocene Leitha limestones (Central Paratethys)

open access: yesGeologica Carpathica, 2017
Mineralogical, major, minor, REE and trace element analyses of rock samples were performed on Middle Miocene limestones (Leitha limestones, Badenian) collected from four localities from Austria (Mannersdorf, Wöllersdorf, Kummer and Rosenberg quarries ...
Ali Ahmed, Wagreich Michael
doaj   +4 more sources

Upper Turonian–Santonian slope limestones of the Islands of Premuda, Ist and Silba (Adriatic Coast, Croatia)

open access: yesGeologia Croatica, 2013
Upper Turonian-Santonian limestones at three island locations (Ist, Silba and Premuda) in the southwestern part of the Adriatic carbonate platform, record slope deposition based on their sedimentological and palaeontological characteristics.These Upper ...
Alan Moro, Vlasta Ćosović
doaj   +3 more sources

Metasomatism of the carbonate rocks of the contact zone with the basalt [PDF]

open access: yesScientific Reports
The influence of low-grade contact metamorphism – metasomatism on carbonate rocks from the contiguous zone with Paleogene-Neogene basalt on the isotopic composition and geochemical properties of limestones from this zone was presented.
Katarzyna J. Stanienda-Pilecki
doaj   +2 more sources

Determination of calcium digestibility and bioavailability in 5 limestone sources using commercial broiler and crossbred chickens [PDF]

open access: yesPoultry Science
: Three experiments were conducted to determine effect of feeding 5 commercial limestones varying in solubility (88–97%), mean particle size (500–700 microns), and geographical origin on Ca bioavailability and digestibility in commercial broiler and ...
R.L. Drysdale   +3 more
doaj   +2 more sources

The mineralogical-petrographical and geochemical properties of Yüreğil (Emirdağ) limestones [PDF]

open access: yes, 2022
Bayat-Emirdağ (Afyonkarahisar) arasında kalan Yüreğil köyü ve çevresinde gri, açık ve koyu gri renkli kireçtaşı birimleri geniş bir alanda bulunmaktadır.
Yıldız, Ahmet   +2 more
core   +1 more source

Comparison between the Effects of Normal Rain and Acid Rain on Calcareous Stones under Laboratory Simulation

open access: yesHydrology, 2023
Acid rain is a problem that despite efforts to reduce atmospheric pollution, continues to impact not only countries where there is a high production of pollutants, but also transboundary areas to which the pollutants are transported.
Indira Rodríguez   +5 more
doaj   +1 more source

87Sr/86Sr chemostratigraphy of Neoproterozoic Dalradian limestones of Scotland and Ireland: constraints on depositional ages and time scales [PDF]

open access: yes, 2004
New calcite <sup>87</sup>Sr/<sup>86</sup>Sr data for 47 limestones from the metamorphosed and deformed Neoproterozoic-Cambrian Dalradian Supergroup of Scotland and Ireland are used to identify secular trends in seawater <sup>
Fallick, A.E.   +7 more
core   +1 more source

Provenance analysis of Roman stone artefacts from sedimentary rocks from the archaeological site near Mošnje, NW Slovenia

open access: yesGeologija, 2016
This study deals with the macroscopic and microfacies characterisation of Roman stone artefacts excavated in 2006 from a Roman villa rustica near Mošnje (NW Slovenia) with the aim of defiing their provenance.
Snježana Miletić   +4 more
doaj   +1 more source

H2S Reactions with Limestone and Calcined Limestone.

open access: yesJOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1995
Sulfur capture reactions of CaCO3-H2S and CaO-H2S have been investigated under various gaseous mixtures conditions using limestone and calcined limestone of 1 mm diameter in a thermogravimetric analyzer.Sulfidation of limestone (CaCO3-H2S) had a very low initial reaction rate and final conversion than the sulfidation of calcined limestone (CaO-H2S) due
Lin, Shi-Ying   +4 more
openaire   +2 more sources

FROM BIOLOGICAL COLONIZATION TO THE SOIL AND CRUST FORMATION: THE ROLE OF CYANOBACTERIA AND SMALL ANIMALS IN A KARSTIC LANDSCAPE, NORTH OF MINAS GERAIS STATE, BRAZIL

open access: yesRevista Geográfica Acadêmica, 2023
The susceptibility of limestones to biological colonization can be a significant role in the development of karst relief, since the microbial biofilms formation and exopolymeric compounds produced by different metabolic activities, and can influence the ...
Araceli Mendonça de Oliveira   +3 more
doaj  

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