Results 121 to 130 of about 466,826 (265)

A 200-year 210Pb record from Greenland [PDF]

, 1997
A continuous profile of 210Pb activity extending back to 1766 has been developed for a firn/ice core collected at Site D in central Greenland in 1984. Unexpectedly high activities of 210Pb were found at the base of this core (0.032 pCi kg−1 in samples ...
Clausen, Crozaz, Crozaz, Crozaz, Dibb, Dibb, Finkel, Gromet, Gunten, Gäggeler, Henrik B. Clausen, Jack E. Dibb, Lachenbruch, Laj, Mayewski, Mayewski, Mayewski, McCall, Neftel, Nijampurkar, Robbins, Sanak, Steffensen   +22 more
core   +2 more sources

Coupling thermal and maturity histories of the Gulong shale oil reservoir in the Songliao Basin: Insights from vitrinite reflectance and apatite fission track

Unconventional Resources
The coupling relationship between the thermal state and maturation during the geological historical period is critical for shale oil-gas exploration because their present distribution characteristics are not probably the same.
Xuefeng Bai, Junhui Li, Xiuli Fu, Min Xu, Yue Bai, Yangxin Su, Kunning Cui, Qingxia Xu, Zongbao Liu, Yuchen Liu   +9 more
doaj   +1 more source

The ophiolite-related Mersin Melange, southern Turkey: its role in the tectonic–sedimentary setting of Tethys in the Eastern Mediterranean region [PDF]

, 2004
WOS: 000222988100001The Mersin Melange underlies the intact Mersin Ophiolite and its metamorphic sole to the south of the Mesozoic Tauride Carbonate Platform in southern Turkey The Melange varies from chaotic melange to broken formation, in which some ...
Parlak, Osman, Robertson, Alastair
core   +1 more source

Discovery of nano organo-clay complex pore-fractures in shale and its scientific significance: A case study of Cretaceous Qingshankou Formation shale, Songliao Basin, NE China

Petroleum Exploration and Development
A new pore type, nano-scale organo-clay complex pore-fracture was first discovered based on argon ion polishing-field emission scanning electron microscopy, energy dispersive spectroscopy and three-dimensional reconstruction by focused ion-scanning ...
Longde SUN, Fenglan WANG, Xuefeng BAI, Zihui FENG, Hongmei SHAO, Huasen ZENG, Bo GAO, Yongchao WANG   +7 more
doaj   +1 more source

Sedimentary geology of the Middle Carboniferous of the Donbas region (Dniepr-Donets basin, Ukraine) [PDF]

, 2015
Peer reviewedPublisher ...
Abels, Hemmo A., Boekhout, Flora, Bosch, Wolter, Geluk, Mark, Hamers, Maartje, Kitchka, Alexander, Stephenson, Randell A., van der Meer, Douwe G., van Hinsbergen, Douwe J.J.   +8 more
core   +2 more sources

Oil Recovery Mechanism of Polymer Gel Injection Between Injection Wells and Production Wells to Block the Dominant Channel of Water Flow

Gels
Gel system profile control and flooding is a novel profile control technology designed to address the issue of inefficient and ineffective water circulation in high water cut reservoirs during their later stages, demonstrating significant development ...
Dong Zhang, Yan Wang, Peng Ye, Shutong Li, Jianguang Wei, Lianbin Zhong, Runnan Zhou   +6 more
doaj   +1 more source

Base metal mineralisation associated with Ordovician shales in south-west Scotland [PDF]

, 1984
Several narrow, lenticular belts of black cherty mudstone and siltstone (the Moffat Shales), alternating with thick greywacke sequences, strike north-east to south-west across Galloway with uniformly steep dip.
Jones, R.C., Leake, R.C., Stone, P.
core  

Tellurium, selenium and cobalt enrichment in Neoproterozoic black shales, Gwna Group, UK : Deep marine trace element enrichment during the Second Great Oxygenation Event [PDF]

, 2018
We are grateful to John Still for his skilled technical support and the ACEMAC facility at the University of Aberdeen. Research funded by NERC grant NE/M010953/1 and NERC facility grant IP-1631-0516. AJB is funded by NERC support of the Isotope Community
Armstrong, Joseph, Boyce, Adrian, Bullock, Liam A, Feldmann, Jörg, Parnell, John, Perez, Magali   +5 more
core   +2 more sources

Mechanism of wellbore instability in continental shale gas horizontal sections and its water-based drilling fluid countermeasures

, 2020
The wellbore instability in the horizontal sections of continental shale gas wells in the Ordos Basin is a major engineering and technical problem that restricts the exploration and development of the shale gas resources in the Yanchang Formation of ...
Bo Wang, Jinsheng Sun, F. Shen, Wei Li, Wenzhe Zhang   +4 more
semanticscholar   +1 more source

The Geoscience Frontier of Gulong Shale Oil: Revealing the Role of Continental Shale from Oil Generation to Production

Engineering, 2023
Wenyuan He, R. Zhu, Baowen Cui, Shuichang Zhang, Qi'an Meng, Bin Bai, Zi-hui Feng, Zhengdong Lei, Songtao Wu, K. He, He Liu, Longde Sun   +11 more
semanticscholar   +1 more source