Results 81 to 90 of about 329,644 (212)

Images from an Archaeological Evaluation at Green Farm, The Street, Salcott, Essex 2020

open access: yes, 2021
This collection comprises images from an archaeological evaluation at Green Farm, The Street, Salcott, Essex, carried out by Cotswold Archaeology, in July 2020.
Cotswold Archaeology
core   +1 more source

The Rise of the r-process in the Gaia-Sausage/Enceladus Dwarf Galaxy

open access: yesThe Astrophysical Journal
Neutron star mergers (NSMs) produce r -process elements after a time-delayed inspiral process. Once a significant number of NSMs are present in a galaxy, r -process elements, such as Eu, are expected to significantly increase with time.
Xiaowei Ou   +4 more
doaj   +1 more source

New Terrestrial Native Iron Discovered on Earth's Surface

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Native iron is a major common mineral in lunar samples and meteorites but rarely occurs on Earth's surface, as its stability requires highly reducing conditions with very low oxygen fugacity. To date, native iron has mainly been found in basalts, ophiolites, and deep hydrothermal systems.
Tingwei Zhang   +5 more
wiley   +1 more source

Galactic Archaeology and Asteroseismology: A Synergetic Approach

open access: yes, 2022
The author is supported by Fundação para a Ciência e a Tecnologia (FCT, Portugal) in the form of a work contract (CEECIND/00476/2018).
openaire   +1 more source

[C/N] Ages for Red Giants and Their Implications for Galactic Archaeology

open access: yesThe Astrophysical Journal
Red giants undergo the first dredge-up, a mixing event that creates a connection between their surface [C/N] and their mass and age. We derive a [C/N]–age relationship for red giants calibrated on Apache Point Observatory Galactic Evolution Experiment ...
John D. Roberts   +4 more
doaj   +1 more source

Impact‐diagnostic criteria for use in confirming a meteorite impact origin of terrestrial geological structures: Recommendations by the Impact Cratering Committee of the Meteoritical Society

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 7, Page 1538-1565, July 2026.
Abstract The framework of the Impact Cratering Committee (ICC) of the Meteoritical Society was approved in 2020, with the first committee members appointed in 2023. The ICC has a mandate to (1) approve, maintain, and update a database of confirmed terrestrial meteorite impact structures, (2) define and regularly update the criteria used for ...
A. J. Cavosie   +11 more
wiley   +1 more source

Turks Head Junction, Honiton, Devon: Archaeological Watching Brief (OASIS ID: cotswold2-246395)

open access: yes, 2016
An archaeological watching brief was undertaken, as per an agreed WSI (CA 2016), by Cotswold Archaeology during groundworks associated with the development of the Turks Head Road Junction and the paths and verges surrounding it.
Cotswold Archaeology
core   +1 more source

Subterranean environments contribute to three‐quarters of classified ecosystem services

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1582-1605, June 2026.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola   +30 more
wiley   +1 more source

Asteroseismology And Galactic Archaeology

open access: yes, 2018
The Milky Way is a complex system, with dynamical and chemical substructures, where several competing processes such as mergers, secular evolution, gas accretion and gas take place. To study how such a giant spiral galaxy was formed and evolved, we need to reconstruct the sequence of its main formation events with high temporal resolution ...
openaire   +2 more sources

Framework Archaeology Heathrow Terminal 5 Excavation Archive

open access: yes, 2011
Between 1996 and 2000 Framework Archaeology undertook extensive excavations of an important prehistoric and Roman landscape at Perry Oaks sludge works, Heathrow, Middlesex.
Framework Archaeology
core   +1 more source

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