Results 81 to 90 of about 224,796 (336)

MICROTOPOCHEMISTRY AND GEOCHEMICAL FEATURES OF A PYRITE NODULE OF СARBONACEOUS SILTSTONES OF THE SAF′YANOVKA MASSIVE SULFIDE DEPOSIT (CENTRAL URAL) [PDF]

open access: yesМинералогия, 2017
Pyrite nodules of carbonaceous siltstones of the Saf´yanovka nonmetamorphosed massive sulfide deposit consist of a porous poikilitic pyrite core (zone A), which is partly transformed to metacrystalline pyrite aggregates at the periphery (zones В и С ...
N.P. Safina   +3 more
doaj  

Modeling the multi-level plumbing system of the Changbaishan caldera from geochemical, mineralogical, Sr-Nd isotopic and integrated geophysical data

open access: hybrid, 2021
Jian Yi   +7 more
openalex   +1 more source

Mineralogy, Geochemistry and Provenance of Coastal Sands from Greece: New Insights on the REE Content of Black Coastal Sands from Aggelochori Area, N.-Greece [PDF]

open access: gold, 2021
Argyrios Papadopoulos   +5 more
openalex   +1 more source

Microscopic time‐dependent mechanical behavior of shale derived from nanoindentation

open access: yesDeep Underground Science and Engineering, EarlyView.
This study conducted grid nanoindentation creep tests to systematically analyze the microscopic creep behaviors of shale. Based on the analysis of creep strain rate sensitivity, the primary mechanism of microscopic creep in shale was found to be the extension and closure of microcracks.
Cunbao Li   +4 more
wiley   +1 more source

PHYSICO-CHEMICAL CONDITIONS OF VENT FAUNA FOSSILIZATION IN THE VMS DEPOSITS OF THE URALS AND PONTIDES: FLUID INCLUSION DATA [PDF]

open access: yesМинералогия, 2016
Fluid inclusions in quartz, barite and calcite from fossilized fauna of hydrothermal massive and clastic ores from the deposits of the Urals (Valentorka, Saf’yanovka, Yubileynoe, Molodezhnoe, Shemur) and Pontides (Killik, Kyzylkaya) are studied with ...
N.N. Ankusheva   +2 more
doaj  

A DTA/GC for the in Situ Identification of the Martian Surface Material [PDF]

open access: yes
The composition and mineralogy of the Martian surface material remain largely unknown. To determine its composition and mineralogy, several techniques are being considered for in situ analyses of the Martian surface material during missions to Mars.
Mancinelli, R. L.   +2 more
core   +1 more source

Oxygen isotopic and petrological constraints on the origin and relationship of IIE iron meteorites and H chondrites [PDF]

open access: yes, 2011
New oxygen isotopic measurements of IIEs and H chondrites are indistinguishable — strengthening a possible common origin for these groups.
Anand, M.   +4 more
core  

Weathering microenvironments on feldspar surfaces: implications for understanding fluid-mineral reactions in soils [PDF]

open access: yes, 2008
The mechanisms by which coatings develop on weathered grain surfaces, and their potential impact on rates of fluid-mineral interaction, have been investigated by examining feldspars from a 1.1 ky old soil in the Glen Feshie chronosequence, Scottish ...
Blum   +8 more
core   +2 more sources

Form and load transfer aspects of foundation systems: Case‐based implementation and adaptation for buildings

open access: yesDeep Underground Science and Engineering, EarlyView.
Upon conceptualization of structural behavior, foundations in terms of their form are divided into linear (1D), planar (2D), and volumetric (3D). Regarding the load transfer mechanisms, linear foundation systems are considered vector‐acting, planar foundations are divided into section and surface‐acting, and volumetric ones are recognized as block ...
Abolfazl Eslami   +4 more
wiley   +1 more source

INTERRELATIONS BETWEEN MALACHITE AND PSEUDOMALACHITE IN THE MEDNORUDYANSKOE DEPOSIT (CENTRAL URALS) [PDF]

open access: yesМинералогия, 2015
The examples of consecutive and alternated crystallization of malachite and pseudomalachite in zonal crusts, stalactites, and stalagmites of Mednorudyanskoe deposit are reviewed. Special attention paid to indicators of cocrystallization of these minerals
V.I. Popova, V.A. Popov, I.A. Blinov
doaj  

Home - About - Disclaimer - Privacy