Results 11 to 20 of about 1,350 (208)

Multi-tests for pore structure characterization-A case study using lamprophyre [PDF]

AIP Advances, 2017
The pore structure plays an important role to understand methane adsorption, storage and flow behavior of geological materials. In this paper, the multi-tests including N2 adsorption, mercury intrusion porosimetry (MIP) and CT reconstruction have been ...
Zhen Li, Guorui Feng, Yi Luo, Shengyong Hu, Tingye Qi, Haina Jiang, Jun Guo, Jinwen Bai, Xianjie Du, Lixun Kang   +9 more
doaj   +2 more sources

Lamprophyre sites of Wajrakarur Kimberlite Field, Southern India: Potential candidates for developing as geoparks

International Journal of Geoheritage and Parks, 2023
This article presents field description of lamprophyres of the Wajrakarur Kimberlite Field (WKF) emphasising their geoscientific potential to develop and popularize them as geoparks.
Pothuri Ramesh Chandra Phani, Madabhooshi Srinivas, Ioannis Kamvisis, Rokalla Ananda Reddy   +3 more
doaj   +2 more sources

Lamprophyre as the source of zircon in the Veneto region, Italy [PDF]

Minerals, 2021
Discrete zircons, up to 9 mm in length, occur in alluvial deposits from the Veneto area. They are likely derived from the disaggregation of lamprophyric rocks belonging to a regional, per-vasive dyke-swarm.
Perna M. G., Brownscombe W., Stoppa F., Zaccaria D., Vicentini N., Sharygin V. V., Humphreys-Williams E., Rosatelli G.   +7 more
core   +5 more sources

Some notes on the IUGS classification of lamprophyric rocks [PDF]

Mineralogia
The lamprophyric rocks are uncommon volatile-rich melanocratic porphyritic rocks which contain only mafic phenocrysts. The felsic minerals are confined in the groundmass. They occur as dikes, sills and diatremes.
Kamvisis Ioannis, Phani Pothuri Ramesh Chandra   +1 more
doaj   +2 more sources

Mineral compositions of magmatic dikes cutting across Khe Phen granites (Huong Tra, Thua Thien Hue, Central Vietnam) [PDF]

Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2019
The Khe Phen granite quarry located in Huong Tra district (Thua Thien Hue province) has been confirmed as a part of the Ba Na granitoid complex (G/K2bn), mostly composed of two-mica granite and porphyritic granite.
Nguyen Thi Thuy, Nguyen Thi Le Huyen, Nguyen Thi Ngoc Tram, Le Hai Nghia   +3 more
doaj   +2 more sources

Mineral chemistry of monazite-(Nd), xenotime-(Y), apatite, fluorite and zircon hosting in lamprophyre dyke in Abu Rusheid area, South Eastern Desert, Egypt

Geologija, 2012
The studied mineralized lamprophyre dyke in Abu Rusheid area is trending NNW-SSE, and occurs withinAbu Rusheid mineralized shear zone, measuring 0.2 - 1.0 m in width and 0.5 - 1.0 km in length. It was emplacedparallel with the Abu Rusheid shear zone. The
Mohamed A. Ali
doaj   +1 more source

Petrogenesis of juvenile pelletal lapilli in ultramafic lamprophyres. [PDF]

Sci Rep, 2023
Abstract The Chadobets alkaline-carbonatite complex (Siberian craton) is a natural laboratory for all varieties of ultramafic lamprophyres, including damtjernites formed by fluid-explosion mechanisms, which contain a large number of pelletal lapilli.
Prokopyev I, Doroshkevich A, Starikova A, Kovalev S, Nugumanova Y, Izokh A.   +5 more
europepmc   +4 more sources

Discovery of the Late Jurassic-Early Cretaceous Lamprophyres in Western Songliao Basin of Northeast China and Their Constraint on Regional Lithospheric Evolution

Frontiers in Earth Science, 2022
Contrary to the commonly accepted notion that the lithosphere in NE China thinned from the Late Jurassic through to the Early Cretaceous period, we report the discovery of a thickening episode in the backdrop of this long-term thinning.
Taiji Yu, Pujun Wang, Yan Zhang, Youfeng Gao, Youfeng Gao, Chongyang Chen   +5 more
doaj   +1 more source

Characteristics of Fault Rocks Within the Aftershock Cloud of the 2014 Orkney Earthquake (M5.5) Beneath the Moab Khotsong Gold Mine, South Africa

Geophysical Research Letters, 2022
Cores recovered during the International Continental Scientific Drilling Program project “Drilling into Seismogenic zones of M2.0 to M5.5 earthquakes in deep South African Gold Mines” include fault breccia from within the aftershock cloud of the 2014 ...
T. Miyamoto, T. Hirono, Y. Yokoyama, S. Kaneki, Y. Yamamoto, T. Ishikawa, A. Tsuchiyama, I. Katayama, Y. Yabe, M. Ziegler, R. J. Durrheim, H. Ogasawara   +11 more
doaj   +1 more source

Potentiality of caro’s acid in leaching of uranium from Abu-Rusheid mylonitic gneiss rocks, South Eastern Desert, Egypt

Results in Materials, 2021
Abu Rusheid area is located at the Southern Eastern Desert of Egypt and composed of Mylonitic gneiss rocks (mineralized rock), Serpentinite rocks, Ophiolitic metagabbro, Ophiolitic mélange, Monzogranites, post-granitic dykes (lamprophyre and dolerite ...
Mohamed S. Nagar, Walid M. Morsy, Mostafa. B Bayoumi, Ahamed S. Shalan   +3 more
doaj   +1 more source