Results 31 to 40 of about 34,086 (157)
'Genesis': A takeover from field-responsive matter? [PDF]
arXiv, 2010 Cairns-Smith (2008) has argued for a pre-Darwinian era, with a simpler basis for life's functioning via primitive "crystal genes" (information transfer, kinetic control on metabolic reactions). At the other extreme, guided by the structural similarity of clusters in early-evolved enzymes to iron-sulphide minerals like greigite, the hydrothermal mound ...
arxiv
Archaeometry, EarlyView.Abstract Physical analysis of in situ fire experiments on soils are useful for the estimation of subsurface thermal diffusivity, which is affected by factors such as water, heterogeneity and heating conditions. To address the uncertainties due to these factors, a new data‐processing procedure based on inverse methods was developed and experimentally ...
Édouard Canot +2 more
wiley +1 more source
arXiv, 2017 Earth's atmosphere has evolved as volatile species cycle between the atmosphere, ocean, biomass and the solid Earth. The geochemical, biological and astrophysical processes that control atmospheric evolution are reviewed from an "Earth Systems" perspective, with a view not only to understanding the history of Earth, but also to generalizing to other ...
arxiv
Dating an ancient spring tunnel using archaeological artefacts functioning as nuclei of cave pearls
Archaeometry, EarlyView.Abstract Cave pearls are spherical concentric speleothems growing radially around nuclei in shallow pools saturated with calcite. They are very rare in the Southern Levant. We present a unique assemblage of 50 cave pearls found in the Iron Age Joweizeh artificial spring tunnel in the Jerusalem Hills of Israel. Some of these deposits represent the first
Azriel Yechezkel +6 more
wiley +1 more source
Primordial origins of Earth's carbon [PDF]
arXiv, 2012 In this chapter we review the astrophysical origins of Earth's carbon, starting from the products of the Big Bang and culminating with the Earth's formation. We review the measured compositions of different primitive objects including comets, various classes of meteorites and interstellar dust particles.
arxiv
Archaeometry, EarlyView.Abstract A wide production of ecclesiastical artefacts is traceable in Sicily between the 17th and 19th centuries, admirable in many diocesan museums. Nevertheless, these artefacts were never studied from an archaeometric point of view: Beyond their historical value, it is time to understand whether the information concerning the decorating gemstones ...
Maura Fugazzotto +4 more
wiley +1 more source
Super-Earths and Earth-like Exoplanets [PDF]
Treatise on Geochemistry, 3rd edition (2024)In the last few years astronomical surveys have expanded the reach of planetary science into the realm of small and dense extrasolar worlds. These share a number of characteristics with the terrestrial and icy planetary objects of the Solar System, but keep stretching previous understanding of the known limits of planetary thermodynamics, material ...
arxiv +1 more source
Prerequisites for a computational approach to Minoan chronology
Archaeometry, EarlyView.Abstract The paper examines the development, adoption, and limitations of the relative chronology system for Minoan pottery, initially established by Sir Arthur Evans and Duncan Mackenzie during the excavation of Knossos (1900–1906). Despite its weaknesses, this system remained largely unchanged due to its convenience rather than its accuracy.
Diamantis Panagiotopoulos +1 more
wiley +1 more source
Archaeometry, EarlyView.Abstract Human genealogies serve multiple functions beyond documenting one's pedigree. They operate as complex social frameworks that structure knowledge, delimit group membership, explain historical causation, are political tools, and provide chronological foundations for understanding past events and processes across diverse knowledge systems ...
Isaac H. McIvor +7 more
wiley +1 more source
Archaeometry, EarlyView.Abstract This research represents the most extensive characterisation of Roman mosaic tesserae (tiles) from Aquileia, Italy, to date, examining 153 specimens. The study aimed to identify the lithotypes used in mosaics production through a multi‐analytical approach, which included colorimetric analysis, polarised light microscopy and scanning electron ...
Neva M. E. Stucchi +5 more
wiley +1 more source