Results 61 to 70 of about 1,407 (268)
Petrology of Oligocene Ghaleh Yaghmesh granitoids in the west of Yazd province
Journal of Economic Geology, 2017 Introduction The generation and evolution of granitic magmas has been a hot debated subject among petrologists. The diversity of their origin has led different authors to propose that these rocks are not simple in their origin and might be generated in
Bahareh Fazeli +4 more
doaj +1 more source
Journal of Raman Spectroscopy, EarlyView.This paper presents a new protocol for the laboratory preparation of archaeological samples. Ceramics that have been hand‐crafted using different sediments as raw materials were collected in a Roman Villa sited in Fiumana (FC), Italy. This method aims at concentrating and analysing heavy minerals in the 15–250 μm grain size fraction, studying the ...
S. Andò +6 more
wiley +1 more source
Mineral chemistry of garnet in pegmatite and metamorphic rocks in the Hamedan area
Journal of Economic Geology, 2015 Introduction The area of this study is located near Hamadan within the Sanandaj - Sirjan tectonic zone. In the Hamadan area, consisting mainly of Mesozoic plutonic and metamorphic rocks, aplites and pegmatites locally contain garnets.(Baharifar et
Ahmad Ahmadi Khalaji, Zahra Tahmasbi
doaj
Determination of Thermal Damage and Failure Time Analysis in Rocks Using Stochastic Models
Quality and Reliability Engineering International, EarlyView.ABSTRACT This study presents a stochastic modeling framework for estimating thermal damage and predicting failure time in fine‐grained Dholpur sandstone subjected to high‐temperature conditions. Unlike conventional approaches that rely on extensive thermally altered physical and mechanical properties, the proposed method utilizes only temperature and ...
Ankush Sharma
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Petrology and Geochemistry of the Qozlou Granitoid and Related Fe skarn (west Zanjan)
Journal of Economic Geology, 2020 Introduction Fe skarn deposits are one of the important Fe deposits in the Zanjan province which have been exploited in recent years. The Qozlou Fe deposit is one of these Fe skarn deposits which is located at 65 km west of Zanjan.
Neda Shafaiepour +3 more
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River Research and Applications, EarlyView.ABSTRACT This study employs two measures of connectivity, valley confinement index (VCI) and effective catchment area (ECA), combined with a field survey of active sediment sources (ASS) to unravel the tributary‐trunk sedimentary links in the 42.5 km long inter‐dam reach of the Dyje River, Czech‐Austrian border.
Zdeněk Máčka +5 more
wiley +1 more source
High‐Pressure Na‐Ca Carbonates in the Deep Carbon Cycle
Geophysical Monograph Series, Page 127-136., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey Rashchenko +2 more
wiley +7 more sources
Journal of Economic Geology, 2019 Introduction The pseudo-section method, first proposed by Hensen (1971), is used today by scientists to determine the thermodynamic conditions of mineral crystallization and modeling in metamorphic lithology (Hoschek, 2004; Omrani et al., 2013).
Haleh Ghorbani +2 more
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Semi‐arid river dynamics from the internal geometry of river deposits
Geographical Research, EarlyView.This article aims to understand fluvial dynamics based on the internal geometry of fluvial deposits, using radar morphostratigraphy in floodplains, especially those whose genesis is associated with anthropogenic controls, such as upstream of dams.
Joana D’arc Matias de Almeida +2 more
wiley +1 more source
Boreas, EarlyView.This study examines the distribution and morphology of lakes under the Laurentide Ice Sheet (LIS) to investigate relationships with ice flow velocity, bedrock and basal thermal regime. Palaeo‐ice streams and lobes were important components of the LIS, and properties of lakes in those regions are quantified at high resolution.
Sarah M. Principato, Carissa M. Mobley
wiley +1 more source