Results 71 to 80 of about 26,385 (251)
Plagioclase: Properties, Occurrence, and History
, 2015 Discovered in 1747 by John Wallerius, plagioclase is an abundant mineral that can be found in igneous and metamorphic rocks. However plagioclase is not one mineral, but encompasses a range of minerals, whose names vary with the structure of its chemical ...
Martzolf, Andrew
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(Table 2) Geochemistry of plagioclase of ODP Hole 183-1137A Unit 10 basalts
, 2009 (Table 2) Geochemistry of plagioclase of ODP Hole 183-1137A Unit 10 ...
Neal, Clive R +7 more
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Archaeometry, EarlyView.Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather +11 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, 2022 Plagioclase ultraphyric basalts (PUBs) are a class of mid‐ocean ridge (MOR) lavas found in a variety of ocean floor environments, are characterized by abundant (15–40 volume %) plagioclase megacrysts and a diverse trace element and isotopic signature ...
Gokce K. Ustunisik +2 more
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A Newly Discovered Tablet‐Making Facility in Nineveh: Insights From Scientific Analysis
Archaeometry, EarlyView.ABSTRACT This paper addresses the question of tablet technology in the Neo‐Assyrian capital city of Nineveh. Recent excavations in the lower town of Nineveh by the Iraqi–Italian Archaeological Expedition uncovered an exceptional assemblage of more than 200 tablets from an elite residence that appears to have included a scriptorium.
Mathilde Jean +7 more
wiley +1 more source
(Table 1) Geochemistry of plagioclase of ODP Hole 183-1137A Unit 4 basalts
, 2009 (Table 1) Geochemistry of plagioclase of ODP Hole 183-1137A Unit 4 ...
Neal, Clive R +7 more
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Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology
Archaeometry, EarlyView.ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana +4 more
wiley +1 more source
(Table 3) Strontium isotope ratios of plagioclase of ODP Hole 183-1137A basalts
, 2009 (Table 3) Strontium isotope ratios of plagioclase of ODP Hole 183-1137A ...
Neal, Clive R +7 more
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Archaeometry, EarlyView.ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello +5 more
wiley +1 more source
Известия высших учебных заведений: Геология и разведкаBackground. The mineral association of ruby in the Snezhnoye deposit is represented by 7 rock-forming and 19 accessory minerals. Here, all minerals vary in their composition due to isomorphism.
A. K. Litvinenko, Sh. A. Odinaev
doaj +1 more source