Results 31 to 40 of about 5,028 (207)

Lithostratigraphy, depositional history and sea level changes of the Cauvery Basin, southern India [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2003
The sedimentary sequence exposed in the erstwhile Tiruchirapalli district hosts a more or less complete geological record of the Upper Cretaceous-Tertiary period.
Muthuvairvasamy Ramkumar   +2 more
doaj   +1 more source

Festschrift Max Bauer zum siebzigsten Geburtstage gewidmet

open access: yes, 1914
Die Festschrift zum siebzigsten Geburtstage des Mineralogen Max Bauer (1844-1917), langjähriger, unermüdlicher und unparteiischer Redakteur des Neuen Jahrbuchs und des Centralblatts für Mineralogie, Geologie und Paläontologie, enthält 22 Beiträge zur ...
Brauns, Reinhard
core   +1 more source

Description and terrestrial ages of the Calama Area Meteorite Collection (Atacama Desert, Chile)

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We present a comprehensive study of a meteorite collection from the Atacama Desert (Chile), the driest and most climatically stable desert in the world. This collection includes meteorites from three adjacent Dense Collection Areas (DCAs) in the northern part of the Atacama Desert: Calama, Sierra Gorda, and Chug Chug, referred to as the ...
Carine Sadaka   +9 more
wiley   +1 more source

Revisiting olivine‐phyric shergottites: Pyroxene crystallization pressure and the role of undercooling

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Shergottites are the most abundant meteorites from Mars and a major source of information on magma reservoirs, transport, and eruption, particularly in the late Hesperian northern hemisphere. Conflicting interpretations have arisen on the crystallization conditions of pyroxene in olivine‐phyric shergottites.
Roger H. Hewins   +2 more
wiley   +1 more source

Non-destructive analysis of pathological belemnite rostra by micro-CT techniques [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Previously, palaeopathological features of fossil hardparts were often difficult to interpret because it was impossible to decipher their internal structure without destroying the specimens. We applied high-resolution computedtomo graphy (CT) to document
René Hoffmann   +4 more
doaj   +1 more source

Accretion and Core Formation of Earth-like Planets: Insights from Metal–Silicate Partitioning of Siderophile and Volatile Elements

open access: yesGeosciences
The origin of volatile elements, the timing of their accretion and their distribution during Earth’s differentiation are fundamental aspects of Earth’s early evolution.
Dominik Loroch   +4 more
doaj   +1 more source

Evidence of an upper ordovician thermo-metamorphic event in the SW-Corner of the Cantabrian Mountains (N-Spain)

open access: yesEstudios Geologicos, 1992
Segun la cristalinidad de Illita (IC) la evolución metamórfica de la zona sudoeste de la Cordillera Cantábrica tuvo lugar en varias etapas. Siguiendo una deformación precámbrica con un metamorfismo de bajo grado, un evento térmico durante el Ordovícico ...
M. Keller, S. Krumm
doaj   +1 more source

Bubble-enhanced basanite–tephrite mixing in the early stages of the Cumbre Vieja 2021 eruption, La Palma, Canary Islands

open access: yesScientific Reports, 2023
Syneruptive magma mixing is widespread in volcanic eruptions, affecting explosivity and composition of products, but its evidence in basaltic systems is usually cryptic.
Diego González-García   +3 more
doaj   +1 more source

Středověká keramika z Českých Budějovic a možnosti jejího archeometrického studia

open access: yesArchaeologia Historica, 2013
Článek představuje základní vývojové horizonty českobudějovické keramiky 13.–15. století. Vybrané keramické třídy byly studovány pomocí rentgenové fluorescenční (XRF) a rentgenové difrakční analýzy (XRD).
Ladislav Čapek   +2 more
doaj  

The Material Basis of 18th‐Century Meissen Porcelain

open access: yesArchaeometry, Volume 68, Issue 5, Page 908-918, October 2026.
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley   +1 more source

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