Characterizing the origin of natural fractures in organic-rich fine-grained deposits is key to constraining permeability evolution these potential source rocks and tight reservoirs, as well assess hydraulic connectivity fluid systems which they develop. Differently oriented calcite-filled (i.e. veins), hosted by mudrocks Lower-Middle Triassic Montney-Doig unconventional resource play (Western C...

The Meillon (Callovo-Oxfordian) and Mano (Tithonian) Formations are dolomitized carbonate reservoirs that actively produce oil gas (Aquitaine Basin, France). In this study, the dolomitization conditions of their counterparts exhumed in northwestern Pyrenees detailed using a combination field observations, petrography, fluid inclusion microthermometry, elemental isotopic geochemistry, U–Pb geoch...

isotopic and microthermometry results from sheikh-darabad cu-au indices in mianeh region, east-azarbaijan province, indicate cenozoic post-magmatic activities with developed adularia facies through an extended and neogene related alteration that is given rise to occurring silica vein systems as the main hosting locations for epithermal mineralization. the research evidence also has been coincid...

the borujerd complex of western iran is composed of intrusions and their surrounding contact aureole, with, pegmatites and quartz veins. pegmatites differ in mineralogy, origin and age, and two groups can be distinguished. the older pegmatites (about 120 ma age) intruded contact metamorphic rocks from the early magmatic stage, while the younger pegmatites (52-70 ma age) formed during the late m...

The mechanisms leading to the formation of bedding-parallel calcite beef veins have been widely debated, with discussions centered on timing or burial depth vein generation, source material, driving forces for initiation and widening, growth direction mechanism. To address these issues, a comprehensive study drill core samples containing in mature Eocene lacustrine Hetaoyuan Formation Biyang Sa...

Lode gold deposits are widespread in orogenic belts of various ages and a valuable source, but their genesis remains debatable. The close relationship between native quartz was considered reason to search for acid-magmatic sources heat fluids (i.e., granite intrusions), while small gabbro bodies were often ignored. Six minor associated with NE-strike faults studied the Khudolaz area South Urals...

The fluids in of pegmatite rare metal deposits are generally rich elements and volatiles (B, P, F, H2O, CO2, etc.), they have a high capacity for dissolving migrating metals. Dakalasu No. 1 vein is located northwest China’s Altay orogenic belt. Previous studies indicated that it small- to medium-sized beryllium-niobium-tantalum deposit. It showed significant mineral assemblage zonations from th...

A simple setup is demonstrated for remote temperature monitoring of water, water-based media, and cells on a microscopic scale. The technique relies on recording changes in the shape of a stretching band of the hydroxyl group in liquid water at 3,100–3,700 cm . Rather than direct measurements in the near-infrared (IR), a simple Raman spectrometer setup is realized. The measured Raman shifts are...

Ulug-Sair Au-Bi-Te-Se mineralization is one prospect for native Au in the Western Tuva, and its origin remains debated. Mineralization consists of gold–sulfide–quartz veins host sedimentary rocks (conglomerates, siltstones, shales), quartz–tourmaline, quartz–carbonate–sericite–altered rocks. To determine origin, we examined mineralogical–geochemical features, formation conditions, fluid sources...

The red beds of the Buntsandstein (Early Triassic) in Campine Basin (NE Belgium) display porosities between 5.3–20.2% (average 13.7%) and permeabilities varying 0.02–296.4 mD 38.7 mD). Knowledge their reservoir controlling properties, which today are missing, is important view potential geological storage CO2 or natural gas geothermal within these sandstones. Therefore effects diagenesis were a...