Results 81 to 90 of about 6,255 (170)

Diorite statue of King Khafre, builder of the Second Pyramid at Gizeh, Cairo, Egypt.(10)

open access: yes, 1904
front: "(10) Diorite statue of King Khafre, builder of the Second Pyramid at Gizeh, Cairo, Egypt"Statue of seated ...
Underwood & Underwood
core  

Study on the influence of TBM disc cutter on the penetration of extremely hard rock in Zijing Tunnel

open access: yesElectronic Journal of Structural Engineering
The reasonable setting of TBM disc cutter penetration depth is crucial for its rock-breaking efficiency in extremely hard rock geology. In the construction section of the Dujiangyan to Mount Siguniang Zijing Tunnel project, which encountered extremely ...
Chao Gao   +6 more
doaj  

spectral X-ray tomogram of a natural monzo-diorite sample

open access: yes
Single slice of a spectral X-ray tomogram of a cylindrical fayalite-bearing monzo-diorite sample, obtained from the Precambrian basement of Kansas, USA. The sample diameter is 8.75 mm.
Derluyn, Hannelore   +4 more
core   +1 more source

Time differences within a calc-alkaline association

open access: yes, 1972
A Strontium isotope study of a high-K diorite complex at Yeoval, N.S.W. (Australia) points to clear time differences (40 m.y.) between the diorite suite (gabbro-diorite-grano-diorite) and surrounding granites.
Gulson, B. L., Bofinger, V. M.
core   +1 more source

Petrology and Geochemistry of Igneous Rocks in Gunung Badak Complex, Ciletuh Palabuhanratu Geopark, Sukabumi, West Java

open access: yesAceh International Journal of Science and Technology
Gunung Badak Complex is located in Ciletuh Palabuhanratu UNESCO Global Geopark, which preserves significant records of tectonic evolution in Southern West Java. This research aims to characterize igneous rocks and interpret tectonic implications.
Millati Amalia Sentosa*   +2 more
doaj   +1 more source

On the Diorites of the Warwickshire Coal-field [PDF]

open access: yesQuarterly Journal of the Geological Society of London, 1879
I n a paper communicated to the Geological Society, and published in the 30th volume of the ‘Quarterly Journal,’ I briefly described the microscopical structure and composition of the various masses of igneous rocks which occur in the Carboniferous strata of the Midland Counties, with the exception of those found in
openaire   +1 more source

Zircon U-Pb dating, mineralogy and geochemical characteristics of the gabbro and gabbro-diorite bodies, Boein–Miandasht, western Iran

open access: yes, 2019
The Boein–Miandasht Complex (BMC) is a part of the Sanandaj–Sirjan metamorphic basement and is cut by gabbroic to granitoid bodies. These intrusive bodies comprise gabbro, gabbro–diorite associated with fine-grained, in part porphyritic leucocratic ...
Neda Tavakoli (6414950)   +6 more
core   +1 more source

Systematization of u-pb zircon ages of granitoids from the copper porphyry deposits on the urals

open access: yesЛитосфера, 2017
There is a generalization of U-Pb age of zircons from the copper-porphyry deposits of the eastern slope of the Urals. Approved reserves of the largest ones are about 1.4-1.8 Mt of Cu (at an average content of 0.4-0.6 wt % of Cu).
Anatolii I. Grabezhev   +3 more
doaj   +2 more sources

Dike Complexes in the Eastern Part of the Kaakhem Magmatic Area (Eastern Tuva): Composition, Age, Geological Position

open access: yesГеодинамика и тектонофизика
This paper presents the results of isotope-geochronological and petrological studies of gabbroic and combined diorite-granite dikes located in the eastern part of the Kaakhem magmatic area.
V. A. Yakovlev   +4 more
doaj   +1 more source

Early Palaeozoic arc-related gabbro-diorite suite in East Junggar, southern Central Asian Orogenic Belt: petrogenesis and tectonic implications

open access: yes, 2019
The Armantai and Kalamaili oceans were both important branches of the Palaeo-Asian Ocean between the Altai microcontinent and the Junggar juvenile crust; however, their geological evolution is not completely clear.
Dian Xiao (7013156)   +4 more
core   +1 more source

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