[HTML][HTML] Microfractures: A review

MH Anders, SE Laubach, CH Scholz - Journal of Structural Geology, 2014 - Elsevier
Microfractures are small, high-aspect-ratio cracks in rock that result from application of
differential stresses. Although the term has been used to refer to larger features in the …

On the distribution of fluids in folds: A review of controlling factors and processes

MA Evans, MP Fischer - Journal of Structural Geology, 2012 - Elsevier
Growing macroscale fold structures are one of the most dynamic and complex systems in
geology, where during fold growth pore fluid pressure, fluid temperature, and fluid …

Comparison of subcritical crack growth and dynamic fracture propagation in rocks under double-torsion tests

J Ma, D Li, S Du, Z Han, P Luo, J Zhao - International Journal of Rock …, 2023 - Elsevier
Relaxation and rapid displacement loading tests were performed on five types of rocks to
gain a deeper understanding of the differences between subcritical crack growth (SCG) and …

Permeability evolution during shear zone initiation in low-porosity rocks

C Kluge, G Blöcher, A Barnhoorn, J Schmittbuhl… - Rock Mechanics and …, 2021 - Springer
Using an innovative experimental set-up (Punch-Through Shear test), we initiated a shear
zone (microfault) in Flechtingen sandstone and Odenwald granite under in situ reservoir …

Stress‐dependent permeability and wave dispersion in tight cracked rocks: Experimental validation of simple effective medium models

J Sarout, E Cazes, C Delle Piane… - Journal of …, 2017 - Wiley Online Library
We experimentally assess the impact of microstructure, pore fluid, and frequency on wave
velocity, wave dispersion, and permeability in thermally cracked Carrara marble under …

Porosity, permeability and 3D fracture network characterisation of dolomite reservoir rock samples

M Voorn, U Exner, A Barnhoorn, P Baud… - Journal of Petroleum …, 2015 - Elsevier
With fractured rocks making up an important part of hydrocarbon reservoirs worldwide,
detailed analysis of fractures and fracture networks is essential. However, common analyses …

A record of changes in the Gran Sasso groundwater before, during and after the 2016 Amatrice earthquake, central Italy

G De Luca, G Di Carlo, M Tallini - Scientific reports, 2018 - nature.com
We performed continuous recordings (May 2015–January 2017) of hydraulic pressure and
electrical conductivity of groundwater in the 190 m-long horizontal S13 borehole drilled next …

Chemical responses to hydraulic fracturing and wolframite precipitation in the vein-type tungsten deposits of southern China

X Liu, Y Ma, H **ng, D Zhang - Ore Geology Reviews, 2018 - Elsevier
Wolframite is the main ore mineral in the vein-type tungsten deposits of southern China.
Much progress has been made on the characteristics of the mineralizing fluids, but the …

The evolution of crack seal vein and fracture networks in an evolving stress field: Insights from Discrete Element Models of fracture sealing

S Virgo, S Abe, JL Urai - Journal of Geophysical Research …, 2014 - Wiley Online Library
Veins are ubiquitous in upper and middle crustal rocks. Due to strength and stiffness
contrast to the host rock, veins can influence crack propagation. Here we present Discrete …

The dynamics of permeability enhancement and fluid flow in overpressured, fracture-controlled hydrothermal systems

SF Cox - 2020 - pubs.geoscienceworld.org
Many ore-producing hydrothermal systems form within intrinsically low permeability host
rocks during fracture-controlled flow in overpressured fluid regimes. The generation and …