Results 101 to 110 of about 8,265,842 (328)

Zircon U-Pb dating of Mesozoic volcanic and tectonic events in northwest Palmer Land and southwest Graham Land, Antarctica [PDF]

, 2009
New whole rock Rb-Sr and zircon U-Pb geochronological data and Sm-Nd isotopic data are presented from the central magmatic arc domain of the Antarctic Peninsula in the area of northwest Palmer Land and southwest Graham Land, Rb-Sr isochrons indicate an ...
Flowerdew, Michael, Leat, Philip, Millar, Ian, Riley, Teal, Scarrow, J.H., Whitehouse, M.J.   +5 more
core   +1 more source

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

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, EarlyView.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

The Jurassic of North-East Greenland: A new Middle–Upper Jurassic succession on Hold with Hope, North-East Greenland [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2004
A succession of marine, Jurassic sediments was recently discovered on Hold with Hope, North-East Greenland. The discovery shows that the area was covered by the sea during Middle–Late Jurassic transgressive events and thus adds to the understanding of ...
Vosgerau, Henrik, Larsen, Michael, Piasecki, Stefan, Therkelsen, Jens   +3 more
doaj  

Mesozoic–Cenozoic Thermochronology of the Tarim–Southern Tianshan System, NW China

Geological Journal, EarlyView.
Tectonothermal history of the Tarim–Southern Tianshan system compared with the major tectonic events at far‐field plate margins. ABSTRACT The Tarim Basin, an oil‐bearing basin in northwest China, is tectonically and sedimentologically linked to the Southern Tianshan Orogenic Belt.
Shuangfeng Zhao, Wen Chen, Jingbo Sun, Ze Shen, Jie Zhang   +4 more
wiley   +1 more source

Geochemical Characteristics and Gas Source Analysis of Natural Gas from the Lower Jurassic in Northeastern Sichuan Basin

Yankuang ceshi
The northeastern Sichuan Basin is rich in natural gas resources, with exploration breakthroughs achieved by multiple oil and gas companies in the Lower Jurassic strata, including the Ziliujing and Lianggaoshan formations.
Xiyao REN, Ming FANG, Yeyu ZHANG, Yi HUANG, Pan WANG, Hengyuan CUI   +5 more
doaj   +1 more source

Seismic interpretation for the Jurassic/Paleozoic reservoirs of QASR gas field, Shushan-Matrouh basin north Western Desert, Egypt

Egyptian Journal of Petroleum, 2019
The QASR gas field lies in the northern part of Shushan-Matrouh Basin (northern part of the Western Desert). Jurassic (Lower Safa)/Paleozoic are a reservoir rocks, in which the gas is trapped in clastic Sandstone, depending on structural framework ...
Mohammed Abuzaied, Ahmed Metwally, Walid Mabrouk, Mohamed Khalil, Ali Bakr   +4 more
doaj   +1 more source

The new and reinstated genera of agglutinated foraminifera published between 1986 and 1996 [PDF]

, 2001
In the 10 years following the publication of "Foraminiferal Genera and their Classification" by Loeblich & Tappan (1987), some 91 new genera of agglutinated foraminifera have been proposed by various authors.
Kaminski, M.A.
core  

Mesozoic Coleopteran Faunas fromArgentina: Geological Context, Diversity, Taphonomic Observations, and Comparison with Other Fossil Insect Records [PDF]

, 2012
The order Coleoptera is the most diversified group of the Class Insecta and is the largest group of the Animal Kingdom. This contribution reviews the Mesozoic insects and especially the coleopteran records from Argentina, based on bibliographical and ...
Gallego, Oscar Florencio, Lara, Maria Belén, Vaz Tassi, Lara   +2 more
core   +2 more sources

How the Physical and Chemical Properties Affect the Heavy Metal Content in Surface Water in Different Types of Peatlands

Land Degradation &Development, EarlyView.
ABSTRACT Only ~3% of the global land surface is covered by peatlands, yet more than one‐third of global soil carbon is stored in these ecosystems and contaminant filtration can be provided. The extent to which peat humification (Fibric–Hemic–Sapric) is linked to dissolved heavy metals in peatland surface waters has remained poorly quantified at a ...
Stanisław Łyszczarz, Norbert Szymański, Michał Jasik, Wojciech Piaszczyk, Andrzej Szlachta, Mirosław Żelazny, Ewa Błońska, Jarosław Lasota, Stanisław Małek   +8 more
wiley   +1 more source