Results 31 to 40 of about 64,179 (348)

Petrological Geodynamics of Mantle Melting I. AlphaMELTS + Multiphase Flow: Dynamic Equilibrium Melting, Method and Results

open access: yesFrontiers in Earth Science, 2017
The complex process of melting in the Earth's interior is studied by combining a multiphase numerical flow model with the program AlphaMELTS which provides a petrological description based on thermodynamic principles.
Massimiliano Tirone, Jan Sessing
doaj   +1 more source

Petrology of hydrothermal metasomatism into intra-ore dolerite dikes of mesothermal gold deposits. P. 2. Zun-Kholba (East Sayan)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
The relevance of the research is caused by the necessity of working up the geology-genetic theory of hydrothermal gold deposits formation instead of the four hypotheses granitogene, basaltogene, metamorphogene, polygene excepting one another.
Igor Kucherenko
doaj   +2 more sources

Structure of the Multiphase Chalcolithic Tell Chiselet–Grădiștea Fundeanca (Romania) From SH‐Wave Full‐Waveform Inversion, Borehole Geophysics and Coring

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT The emergence and development of settlement mounds, also called tells, is of major interest for the analysis of socio‐economic transformations occurring in the lower Danube plain during the East European Chalcolithic period. In this context, the multiphase chronology and structural layout of tells are highly relevant indicators, but small ...
Manuel Zolchow   +11 more
wiley   +1 more source

Wetlands as environments of early human occupation: A new classification for freshwater palaeowetlands

open access: yesThe Depositional Record, EarlyView.
A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo   +1 more
wiley   +1 more source

Petrology in Perspective [PDF]

open access: yesNature, 1955
A Historical Survey of Petrology By Prof. F. Y. Loewinson-Lessing. (Translated from the Russian by Dr. S. I. Tomkeieff.) Pp. x + 112. (Edinburgh and London: Oliver and Boyd, Ltd., 1954.) 12s. 6d. net.
openaire   +2 more sources

Fifty years of research on the Joulters ooid sandbody—Impact on carbonate sedimentology and diagenesis and lessons learned from an invaluable analogue

open access: yesThe Depositional Record, EarlyView.
The Joulters ooid sandbody of northern Great Bahama Bank is a vast expanse of muddy ooid sands partly rimmed by clean ooid sands and formed into a relatively thick layer of significant extent. Knowledge of the development of depositional and diagenetic patterns in the Joulters example has forwarded our general understanding of carbonate sedimentology ...
Paul (Mitch) Harris
wiley   +1 more source

Structural controls on petroleum migration and entrapment within the faulted basement blocks of Szeghalom Dome (Pannonian Basin, SE Hungary)

open access: yesGeologia Croatica, 2015
 The basement of the Pannonian Basin contains several fractured metamorphic hydrocarbon reservoirs that typically form structural highs between the Neogene sedimentary sub-basins.
Lászlo Molnár   +2 more
doaj   +1 more source

A Data Driven Approach to Investigate the Chemical Variability of Clinopyroxenes From the 2014–2015 Holuhraun–Bárdarbunga Eruption (Iceland)

open access: yesFrontiers in Earth Science, 2020
The Holuhraun–Bárdarbunga (Iceland) eruption lasted approximately 6 months. Magma propagated laterally through a 40 km long dyke, while Bárdarbunga caldera was collapsing.
Luca Caricchi   +6 more
doaj   +1 more source

Bahaman patch reefs: Numerous and neglected

open access: yesThe Depositional Record, EarlyView.
Abstract Phanerozoic patch reefs are extensively studied because they are abundant and are potential reservoirs for valuable fluids. In contrast, geologic studies of modern reefs have largely focused on platform margins, leaving patch reefs comparatively neglected. What conditions favour patch‐reef development?
Paul Enos, Clay Robertson
wiley   +1 more source

Optimization of computation methods calculating regional geologic models of ore-bearing isometric structures in Python

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
Numeric regional models are necessary to reconstruct the nature and conditions of formation of i geological structures, to obtain ideas about the evolution of different zones of the crust and upper mantle, the evolution of fold and fault dislocations and
S.L. Shevyrev, N.G. Boriskina
doaj   +1 more source

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