Results 31 to 40 of about 147,175 (375)

Surface and subsurface engineering geological mapping for empirical designs of excavation method and support system of Tunnel 6 of Jakarta-Bandung high speed railway, Indonesia [PDF]

open access: yesE3S Web of Conferences, 2021
Empirical design of support system at the Tunnel 6 of the Jakarta – Bandung high-speed railway was based on the Basic Quality (BQ) system, which had not been adopted in Indonesia.
Malda Octavika   +2 more
doaj   +1 more source

Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model

open access: yesScience and Technology of Nuclear Installations, 2018
In the deep geological repository of nuclear waste, the corrosion of waste generates gas, which increases the storage pressure, changes the properties of the rock strata, and affects the stability of nuclear waste repository.
Yi Xue   +4 more
doaj   +1 more source

Integrated geophysical and geological investigations applied to sedimentary rock mass characterization

open access: yesAnnals of Geophysics, 2008
The Salento Peninsula (south-eastern Italy) is characterized by sedimentary rocks. The carbonatic nature of the rocks means they are affected by karst phenomena, forming such features as sinkholes, collapsed dolines and caverns, as a result of chemical ...
S. Negri   +4 more
doaj   +1 more source

Rock typing and reservoir zonation of the Asmari Formation in a gas field, Persian Gulf [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering
In this study, the geological and petrophysical methods were combined to investigate the reservoir characteristics of the Asmari Formation in one of the gas fields in the Persian Gulf.
Behrooz Esrafili-Dizaji
doaj   +1 more source

A new method of lithologic identification and distribution characteristics of fine - grained sediments: A case study in southwest of Ordos Basin, China

open access: yesOpen Geosciences, 2019
Lithologic identification is critical for studying fine - grained sediments, which further elucidates sedimentary environment, and formation. The oil - bearing Chang 7 Section of the Yanchang Formation in Ordos Basin contains thick dark mudstone with a ...
Lyu Qiqi   +7 more
doaj   +1 more source

Silicate and carbonate mixed shelf formation and its controlling factors, a case study from the Cambrian Canglangpu formation in Sichuan basin, China

open access: yesOpen Geosciences, 2023
Mixed sedimentation is mainly a phenomenon by which siliciclastic and carbonate are mixed under a similar sedimentary environment. The study of the composition of mixed rock can reflect the sedimentary environment.
Tong Zebin   +8 more
doaj   +1 more source

Overcoming Challenges of Teaching Earth History Classes for Teachers in a Rock-free, Urban Environment [PDF]

open access: yes, 2004
Instructing university-level Earth history to future teachers is made all the more difficult when it is being done in an urban environment devoid of any local rock outcroppings.

core   +1 more source

Mars sedimentary rock erosion rates constrained using crater counts, with applications to organic matter preservation and to the global dust cycle [PDF]

open access: yes, 2016
Small-crater counts on Mars light-toned sedimentary rock are often inconsistent with any isochron; these data are usually plotted then ignored. We show (using an 18-HiRISE-image, >10^4 crater dataset) that these non-isochron crater counts are often well-fit by a model where crater production is balanced by crater obliteration via steady exhumation. For
arxiv   +1 more source

Provenance of sedimentary rocks [PDF]

open access: yes, 2009
Understanding the origins, or provenance, of a sedimentary deposit is an important aspect of geology. Sedimentary rocks are derived from the erosion of other rocks and thus provide important records of the geological environment at the time they were ...
Moloney, Paul   +3 more
core   +1 more source

Biointerfacing with AgBiS2 Quantum Dots for Pseudocapacitive Photostimulation

open access: yesAdvanced Functional Materials, EarlyView.
It is demonstrated that AgBiS2 quantum dots exhibit unique photoinduced pseudocapacitive charge transfer properties, enabling efficient light‐to‐electrical energy conversion. These quantum dots facilitate enhanced light absorption and transduction when integrated with ZnO nanowires, which serve as an effective charge transport medium.
Ridvan Balamur   +8 more
wiley   +1 more source

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