Results 21 to 30 of about 74,303 (183)

Geological and isotope-geochemical criteria of evident presence of ancient continental crust in Primorye basement

open access: yesЛитосфера, 2018
The totality of structural-tectonic, lithologic-mineralogical, isotope-geochemical data on the geology of Primorye and adjacent territories of Northeast China and the Amur Region allows us to justify the criterions for the existence of an ancient sialic ...
Sergei O. Maksimov   +2 more
doaj   +1 more source

The Research and Application of Microbial Degradation Technology on Heavy Oil Reservoir in Huabei Oilfield

open access: yesE3S Web of Conferences, 2018
Mengulin sandstone reservoir in Huabei oilfield is low- temperature heavy oil reservoir. Recently, it is at later stage of waterflooding development. The producing degree of water flooding is poor, and it is difficult to keep yield stable.
Wang Guan   +8 more
doaj   +1 more source

The Role of Kerend Fault on Evolution of Folds in North Western Part of Zagros Case study: Rijab Syncline Dr. Mahmood Alaee Talegani Assistant Professor of Geomorphology University of Razi Dr. Zahra Rahimzadeh Assistant Professor of Natural Geography [PDF]

open access: yesجغرافیا و توسعه, 2014
Kerned fault with 45 km length and over thrust feature is one of the most important morphological structures of the North West part of folded Zagros around Sare- Pole- Zahab Occurrence a number of 20th centaury earthquakes along this fault indicates that
doaj   +1 more source

Piping and woody plants in peatlands: Cause or effect? [PDF]

open access: yes, 2005
This paper presents, for the first time, evidence to show that Calluna species are one causative factor of piping in blanket peat catchments. Ground-penetrating radar survey on 960 plots illustrated that piping was prevalent throughout blanket peats ...
Holden, Joseph
core   +1 more source

Emplacement of the Rocche Rosse rhyolite lava flow (Lipari, Aeolian Islands) [PDF]

open access: yes, 2018
The authors acknowledge Airbus Defence and Space for providing satellite imagery, financial support from Keele University and fieldwork grants from the Mineralogical Society of Great Britain and Ireland and the Volcanic and Magmatic Studies Group.
Bullock, Liam A   +2 more
core   +2 more sources

Water saturation induced changer in the indirect (Brazilian) tensile strength and the failure mode of some igneous rock materials [PDF]

open access: yes, 2020
The present study concentrates on water induced strength reduction and variation of the failure mode in indirect (Brazilian) tension tests of several igneous rock materials under three moisture cases of oven-dry, air-dry and fully saturated states.
Komurlu, Eren, Yasar, Serdar
core  

Shallow geological structures triggered during the Mw 6.4 Meinong earthquake, southwestern Taiwan

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2017
The Meinong earthquake generated up to ~10 cm surface displacement located 10 - 35 km west of the epicenter and monitored by InSAR and GPS. In addition to coseismic deformation related to the deep earthquake source, InSAR revealed three sharp surface ...
Maryline Le Béon   +10 more
doaj   +1 more source

Long-time evolution of sequestered CO$_2$ in porous media [PDF]

open access: yes, 2014
CO$_2$ sequestration in subsurface reservoirs is important for limiting atmospheric CO$_2$ concentrations. However, a complete physical picture able to predict the structure developing within the porous medium is lacking.
Cohen, Yossi, Rothman, Daniel H.
core   +2 more sources

Mapping topsoil field-saturated hydraulic conductivity from point measurements using different methods

open access: yesJournal of Hydrology and Hydromechanics, 2017
Topsoil field-saturated hydraulic conductivity, Kfs, is a parameter that controls the partition of rainfall between infiltration and runoff and is a key parameter in most distributed hydrological models.
Braud Isabelle   +4 more
doaj   +1 more source

Stress concentrations around voids in three dimensions : The roots of failure [PDF]

open access: yes, 2017
Funding This work forms part of a NERC New Investigator award for DH (NE/I001743/1), which is gratefully acknowledged. Acknowledgments The authors would like to acknowledge the reviewers, Elizabeth Ritz and Phillip Resor.
Bubeck, A.   +3 more
core   +1 more source

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