Results 71 to 80 of about 60,050 (341)

Geochemistry and origin of organic-rich sediment veins in fractured granitic basement, Helmsdale, Sutherlandshire, UK [PDF]

, 2017
Acknowledgements MB is in receipt of a PhD studentship from the Petroleum Technology Development Fund of Nigeria. LB is supported by NERC grant NE/M010953/1. C. Taylor, W. Ritchie and J. Johnston provided skilled technical support.
Baba, Mas'Ud, Bowden, Stephen, Bullock, Liam, Parnell, John   +3 more
core   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Glacial geology and till geochemistry in ore exploration in the Tervola area, southern Finnish Lapland [PDF]

Bulletin of the Geological Society of Finland, 1998
Glacial geology and till geochemistry were studied in an ore exploration project in the Palaeoproterozoic Peräpohja Schist Belt in the Tervola area of southern Finnish Lapland. The starting point for the exploration were numerous Au-Cu-rich erratics, the
P. Sarala, V. Peuraniemi, R. Aario
doaj   +1 more source

Crustal structure and rift flank uplift of the Adare Trough, Antarctica [PDF]

, 2005
The Adare Trough, located 100 km northeast of Cape Adare, Antarctica, represents the extinct third arm of a Tertiary spreading ridge between East and West Antarctica. It is characterized by pronounced asymmetric rift flanks elevated up to over 2 km above
Ashalatha, Becker, Behrendt, Bodine, Cande, Cande, Clouard, Divins, Donnellan, Finn, Frakes, Hayes, Hayes, Joann M. Stock, Jokat, Jonas, Jung, Livermore, Lizarralde, McAdoo, Müller, Parker, Parsons, Phipps-Morgan, R. Dietmar Müller, Radha, Rocchi, Shapiro, Steinberger, Steven C. Cande, Sykes, Tonarini, Weissel, Weissel, White, William R. Keller, Winberry   +36 more
core   +1 more source

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source

Lead, zinc and copper mineralisation in basal Carboniferous sediments at Westwater, south Scotland [PDF]

, 1977
A zioneo f lead, zinc and copperm ineralisatioins developedo ver a minimum I of 4 km of strikeo f basal Carboniferoucse mentstoneg roup sedimentsa nd immediatelyu nderlyingB irrenswarkL avas atwestwater,n ear Laqholm in south Scotland.
Davies, A., Easterbrook, G.D., Fortey, N.J., Gallagher, M.J., Parker, M.E., Smith, R.T.   +5 more
core  

Wind control on the accumulation of heavy metals in sediment of Lake Ulubat, Anatolia, Turkey [PDF]

, 2009
Freshwater Lake Ulubat (zmean = 1.5-2.0 m and Area = ~138 km2), NW Anatolia, Turkey was filled in by fine-to-medium-grain silts during the late Holocene.
Costa, PJM, Ileri, O, Kazancı, N, Kibar, M, Leroy, SAG, Sayılı, S, Toprak, O, Turgut, C, Öncel, S   +8 more
core   +1 more source

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

Deep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan, Haijiang Li, Hongqiang Xie, Mingli Xiao, Jianliang Pei, Huaizhong Liu, Jiangda He   +6 more
wiley   +1 more source

Lunar elemental composition and ivestigations with D-CIXS x-ray mapping spectrometer on SMART-1 [PDF]

, 2004
The D-CIXS Compact X-ray Spectrometer on ESA SMART-1 successfully launched in Sept 2003 can derive 45 km resolution images of the Moon with a spectral resolution of 185 eV, providing the first high-resolution global map of rock forming element ...
Alleyne, H., Baker, D., Barabash, S., Browning, R., Casanova, I., Dunkin, S., Foing, B., Grady, M., Grande, M., Guest,, J., Howe, C., Hughes, D., Huovenin, J., Kellett, B., Kent, B., Lundin, R., Mal, U., Maurice, S., Murray, C. D., Perry, C. H., Russell, S., Swinyard, B., Thomas, N., Waltham, N.   +23 more
core  

Identifying thermogenic and microbial methane in deep water Gulf of Mexico Reservoirs [PDF]

, 2020
The Gulf of Mexico (GOM) produces 5% of total U.S. dry gas production (USEIA, 2016). Despite this, the proportion of microbial and thermogenic methane in discovered and producing fields from this area is still not well understood.
Eiler, John, Formolo, Michael, Kitchen, Nami, Lawson, Michael, Ponton, Camilo, Thiagarajan, Nivedita, Xie, Hao   +6 more
core