Results 51 to 60 of about 14,485 (173)

Contact Metamorphism in Southern California [PDF]

, 1954
A highly condensed introduction to "Contact metamorphism in southern California" is obviously not the place in which to indulge in semantic niceties nor to engage in terminological tussles, and thus the title is not intended to reflect a carefully ...
Campbell, Ian
core  

Raman Study of the Slobodka Ordinary Chondrite

Journal of Raman Spectroscopy, EarlyView.
The texture and mineral chemistry of Slobodka are most consistent with L4 chondrites, exhibiting strong shock metamorphism characteristic of shock stage S4, including irregular and planar fractures, undulatory extinction, and mosaicism in olivine, pyroxene, and plagioclase.
M. Simopoulou, I. Baziotis, L. Ferrière, J. Hu, C. Sanchez‐Valle, P. N. Gamaletsos, D. Palles, J. Berndt, C. Ma, S. Klemme, P. D. Asimow   +10 more
wiley   +1 more source

An Early Cretaceous astropectinid (Echinodermata, Asteroidea) from Patagonia (Argentina): a new species and the oldest record of the family for the Southern Hemisphere [PDF]

, 2014
Los asterozoos son echinodermos de vida libre, con forma de estrella, y componentes importantes de las faunas marinas bentónicas a nivel mundial. Su registro fósil, sin embargo, es pobre y fragmentario, probablemente debido a la desarticulación de los ...
Carrizo, Martin Alejandro, Fernández, Diana Elizabeth, Luci, Leticia, Perez, Damián   +3 more
core   +1 more source

The Bronze Age Tombs of Northwest Arabia: A Chrono‐Typological Study From AlUla and Khaybar, Saudi Arabia

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT Northwest Arabia is marked by tens of thousands of monumental burial structures, most of which appear to have been built during the Bronze Age. These funerary features range from simple cairns and tower tombs through to large ‘pendant’ burials with elaborate tail constructions.
Hugh Thomas, Jane McMahon, Lauren Swift, Daniel Franklin, Fahad Bagdadi, Rudolph Alagich, Melissa Kennedy   +6 more
wiley   +1 more source

Mineralogy, chemistry of magnetite and genesis of Korkora-1 iron deposit, east of Takab, NW Iran

Journal of Economic Geology, 2014
Introduction There is an iron mining complex called Shahrak 60 km east of Takab town, NW Iran. The exploration in the Shahrak deposit (general name for all iron deposits of the area) started in 1992 by Foolad Saba Noor Co.
Mohammad Maanijou, Rahimeh Salemi
doaj  

Tracing the origin of Roman mosaic tiles in Aquileia: Petrographic analysis of specimens from the suburbium

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, Giulia Franceschin, Chiara Coletti, Andrea Vavasori, Claudio Mazzoli, Arianna Traviglia   +5 more
wiley   +1 more source

Understanding plaster production in Palaepaphos–Hadjiabdoullah, Cyprus, during the Cypro‐Classical period

Archaeometry, EarlyView.
Abstract This article discusses the results of analytical work on wall and floor plaster from a secular monument excavated on the plateau of Palaepaphos–Hadjiabdoullah (Cyprus). Excavated within the frame of the Palaepaphos Urban Landscape Project (PULP), funded by the University of Cyprus since 2006, the monument is an extensive multifunction workshop
Marta Lorenzon, Maria Iacovou
wiley   +1 more source

Coupling Phase Equilibrium Modelling and Apatite‐in‐Garnet Elastic Barometry to Unravel the P–T Path of the Micaschist Unit From the Zicavo Metamorphic Complex (Corsica, France)

Journal of Metamorphic Geology, EarlyView.
ABSTRACT To gain insights into the pressure–temperature evolution of a scarcely studied portion of the Variscan basement of Corsica in southern Europe, we combined phase equilibrium modelling, Zr‐in‐rutile thermometry and apatite‐in‐garnet elastic barometry. We investigated Grt‐St micaschist rocks containing garnet grains of several millimetres in size
Lorenzo Dulcetta, Xin Zhong, Gabriele Cruciani, Johannes Vrijmoed, Jan Pleuger, Marcello Franceschelli, Timm John   +6 more
wiley   +1 more source

Hydrogen from Radiolysis of Aqueous Fluid Inclusions during Diagenesis [PDF]

, 2017
Acknowledgments We are grateful to J. Bowie and J. Still for skilled technical support and the staff at ICL-UK’s Boulby mine (especially Thomas Edwards), STFC’s Boulby underground Laboratory and the UK Centre for Astrobiology MINAR programme team ...
Blamey, Nigel, Parnell, John
core   +2 more sources

Zircon (Re)crystallization During Metamorphism: Zircon Paragenesis in the Papua New Guinea Coesite Eclogite Revisited

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The youngest known ultrahigh‐pressure (UHP) eclogite from Tumagabuna Island, a small island of the D'Entrecasteaux Islands chain in Papua New Guinea, exhibits zircon U–Pb age variations spanning a few million years. This age variation complicates the interpretation of the evolution of this high and ultrahigh‐pressure ([U]HP) terrane.
Linus B. Streicher, Fraukje M. Brouwer, Keewook Yi, Suzanne L. Baldwin, Wim van Westrenen   +4 more
wiley   +1 more source