Results 81 to 90 of about 136,558 (327)

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Evidence for a reducing Archean ambient mantle and its effects on the carbon cycle [PDF]

, 2016
Chemical reduction-oxidation mechanisms within mantle rocks link to the terrestrial carbon cycle by influencing the depth at which magmas can form, their composition, and ultimately the chemistry of gases released into the atmosphere.
Aulbach, Sonja, Stagno, Vincenzo
core   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

ALPINE MAGMATIC-METALLOGENIC FORMATIONS OF THE NORTHWESTERN AND CENTRAL DINARIDES

Rudarsko-geološko-naftni Zbornik, 1997
In the paper are presented basic geological, petrologieca1, geochemi-cal and mineral deposit data for five main magmatic-metallogenic formations of the northwestern and central Dinarides: (l)The Permo Triassic rifting related andesite-diorite formations;
Jakob Pamić , Ivan Jurković
doaj  

Optimization of computation methods calculating regional geologic models of ore-bearing isometric structures in Python

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
Numeric regional models are necessary to reconstruct the nature and conditions of formation of i geological structures, to obtain ideas about the evolution of different zones of the crust and upper mantle, the evolution of fold and fault dislocations and
S.L. Shevyrev, N.G. Boriskina
doaj   +1 more source

A computer program for grain-size data [PDF]

, 1965
The computer program presented here seeks to improve estimation of statistical parameters for grain-size data by use of interpolated values. Interpolation is made by fitting a series of overlapping parabolas to the data, and follows the method of Snyder
Schlee, John Stevens, Webster, Jacqueline   +1 more
core   +1 more source

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Characterization of mesostasis regions in lunar basalts: Understanding late-stage melt evolution and its influence on apatite formation [PDF]

, 2016
Recent studies geared toward understanding the volatile abundances of the lunar interior have focused on the volatile-bearing accessory mineral apatite.
Agrell, Anand, Anderson, Barnes, Barnes, Birck, Boyce, Boyce, Day, Engel, Eugster, Fagan, Ghiorso, Ghiorso, Gualda, Hallis, Henderson, Hintenberger, Hohenberg, Horn, Husain, James, Lester, Liu, Longhi, Mathez, McCubbin, McCubbin, McCubbin, McCubbin, McCubbin, Neal, Neal, Nyquist, Papanastassiou, Papanastassiou, Pernet-Fisher, Prowatke, Ridley, Ryder, Seddio, Tartèse, Tartèse, Tartèse, Tartèse, Turner, Wakita, Weigand   +47 more
core   +1 more source

Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal

Energy Science &Engineering, EarlyView.
It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang, Rui Wang, Yinglie Li, Xinhe Wu, Yanming Qu   +4 more
wiley   +1 more source