Results 91 to 100 of about 7,690 (304)
Geologija, 1991 Hercynian crystalline complex of the Slavonian Mountains and surrounding basement of the Pannonian Basin comprises the following units: (1) anchimetamorphic and very low-grade metamorphic rocks with metabasic igneous rocks, (2)progressive metamorphic ...
Jakob Pamić, Marvin Lanphere
doaj
Graphite mine and mineral assemblage of surrounding rock and its indicative significance to metamorphic facies [PDF]
, 2022 Bohui Xu +4 more
openalex +1 more source
Archaeological Geology of Jurash, ʿAsīr Province, Southwestern Saudi Arabia
Arabian Archaeology and Epigraphy, EarlyView.ABSTRACT The Jurash archaeological site is located on Wādī Bīshah near the city of Khamīs Mushayt in southwestern Saudi Arabia. It has a fort and other remains from the pre‐Islamic period (third century bc to early seventh century ad) and a settlement with two mosques from the Early Islamic period (early seventh to early 11th centuries ad).
James A. Harrell
wiley +1 more source
Paradox of Peroxy Defects and Positive Holes in Rocks - Part I: Effect of Temperature [PDF]
arXiv, 2015 Though ubiquitous in minerals of igneous and high-grade metamorphic rocks, peroxy defects have been widely overlooked in the past. The charge carriers of interest are positive holes, chemically equivalent to O$^-$ in a matrix of O$^{2-}$, physically defect electrons in the O$^{2-}$ sublattice, highly mobile, able to propagate fast and far.
arxiv
Macau as Method: Recombinant Urbanism in Post‐Socialist China
Asia Pacific Viewpoint, EarlyView.ABSTRACT In ‘Asia as Method’, Chen Kuan‐Hsing argues for the value of an indigenous inter‐Asian approach to analysing the effects of European imperialism on the countries and citizens of Asia. This article mobilises both Chen's inter‐Asian referencing strategy and the city‐state of Macau to explore Macau's role in China's engagements with global ...
Tim Simpson
wiley +1 more source
Tracking Bronze age ‘itinerant smiths’ in western Poland: insights from Nd and Sr isotope data
Archaeometry, EarlyView.Abstract The neodymium (Nd) isotope composition of stone casting moulds found in graves of Bronze Age ‘itinerant smiths’ in western Poland was analysed to determine the provenance of their raw materials. For the first time in archaeological research, the Nd model age (TDM)—a highly useful parameter in studying the provenance of geological materials—has
Mateusz Stróżyk +5 more
wiley +1 more source
Using Semi-Supervised Learning for Predicting Metamorphic Relations [PDF]
arXiv, 2018 Software testing is difficult to automate, especially in programs which have no oracle, or method of determining which output is correct. Metamorphic testing is a solution this problem. Metamorphic testing uses metamorphic relations to define test cases and expected outputs.
arxiv
Accessory minerals: a provenancing tool for steatite quarries
Archaeometry, EarlyView.Abstract Steatite has been a widely traded material across a range of archaeological contexts. Yet, challenges inherent to determining its provenance limits our understanding of the networks and mechanisms of its exchange. We present a robust new accessory mineral provenancing “fingerprint” method based their specific growth history.
Riia Chmielowski +2 more
wiley +1 more source
Dynamics of Chemical Orders in Formation of Striped Patterns in Metamorphic Rocks [PDF]
arXivThe striped patterns in rocks, characterized by thin dark bands and thick light bands, are a result of the natural processes that have shaped the rocks through in situ metamorphism. Notably, the dark and light bands are composed of similar minerals, with the dark bands containing additional trapped materials such as fluid pockets or extra mineral ...
arxiv
Structure and thermodynamics of defects in Na-feldspar from a neural network potential [PDF]
The diffusive phase transformations occurring in feldspar, a common mineral in the crust of the Earth, are essential for reconstructing the thermal histories of magmatic and metamorphic rocks. Due to the long timescales over which these transformations proceed, the mechanism responsible for sodium diffusion and its possible anisotropy has remained a ...
arxiv +1 more source