Results 121 to 130 of about 148,265 (366)
Shock Deformation in Zircon, a Comparison of Results from Shock-Reverberation and Single-Shock Experiments [PDF]
The utility of the mineral zircon, ZrSiO4, as a shock-metamorphic geobarometer and geochronometer, has been steadily growing within the planetary science community.
Cintala, M. J. +4 more
core +1 more source
Ancient tin production: Slags from the Iron Age Carvalhelhos hillfort (NW Iberian Peninsula) [PDF]
, 2018 Provenance and production of tin in the Ancient World has since long been a major topic of discussion among archaeologists. In Western Europe, where significant tin ore (cassiterite) deposits are known, only a few remains of ancient tin production, such ...
Figueiredo, Elin +5 more
core +1 more source
A spectrographic method for determining trace amounts of lead in zircon and other minerals [PDF]
, 1952 C. L. Waring, Helen Worthing
openalex +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract Olivine is a major constituent in ureilites and commonly defines macroscopic fabric via shape‐preferred orientation of elongate grains. In this study, we examined olivine fabric (crystallographic preferred orientation, or CPO) and microstructures in the unbrecciated olivine‐pigeonite ureilites Northwest Africa (NWA) 7059 and Nova 018 using ...
A. I. Sheen +5 more
wiley +1 more source
Regular dependence of acoustic signals from dispersion at jet grinding ores [PDF]
, 2013 В умовах роботи струминних подрібнювальних установок виявлено акустичні закономірності зміни дисперсності матеріалів у процесі тонкого подрібнення. Запропоновано комплексні акустичні й технологічні критерії підвищення якості подрібненого продукту при ...
Gorobets, L.J. +2 more
core
Radioisotopic age constraints of the Cambrian Ritland impact structure, Norway
Meteoritics &Planetary Science, EarlyView.Abstract Secondary ion mass spectrometry U‐Pb geochronology has been performed on zircon grains separated from impact melt rock from the 2.7 km‐in‐diameter Ritland impact structure, southwestern Norway. Scanning electron microscope‐based imaging techniques, including electron backscatter diffraction analysis, reveal various zircon grain microtextures ...
William R. Hyde +6 more
wiley +1 more source
Geologic Significance of the Color of Granite Zircon, and the Discovery of the Pre-Cambrian in Japan [PDF]
, 1954 Tôru Tomita
openalex +1 more source
Terra Nova, EarlyView.ABSTRACT The early Miocene unconformity (EMU) formed during a transition in the tectonic regime of western North America that coincided with faunal diversification. The Railroad Canyon section in the northern Rocky Mountains provides a complete geologic record around this event. Our new magnetostratigraphic study in combination with published U‐Pb ages
Dieke Gerritsen +3 more
wiley +1 more source