Results 31 to 40 of about 166,331 (170)

Geochemical data as a tool for estimation of mineralization potential in the Hanar granitoids as part of Tertiary plutonism in Lut block (East of Iran) [PDF]

پترولوژی, 2020
Hanar intrusion located in 155 km South of Birjand in the east of Lut block and compositionally consist of tonalite, granodiorite, quartz-diorite and diorite that intruded as stock and dikes in volcanic sequence (basic to intermediate) outcropped in this
Siavash Omidianfar, Mohammad Rahgoshay, Iman Monsef   +2 more
doaj   +1 more source

Major, trace and rare earth elements of apatite and zircon U-Pb ages of ore-associated and barren granitoids from the Edong ore district, South China

Data in Brief, 2018
The data in this article contains major, trace and rare earth element concentrations of apatite, and statistic analysis of apatite morphology in the granitoid rocks from the Edong ore district, South China, together with zircon U-Pb dating results for ...
Deng-Fei Duan, Shao-Yong Jiang
doaj   +1 more source

Petrogenesis of late Ordovician high Ba–Sr quartz diorite in the northern Qinling orogeny and its geological implications

Frontiers in Earth Science
Late Ordovician to early Silurian medium-acidic magmatic rocks with high Ba–Sr characteristics are well-exposed in the northern Qinling orogeny and are ideal objects for discussing the regional evolution of magmatism and constraint tectonics.
Biao Du, Biao Du, Duanchang Zhao, Duanchang Zhao, Yafeng Zhang, Yafeng Zhang, Zhenkai Zhang, Xing Wang, Xing Wang, Wujie Li, Wujie Li, Zilong Wang, Zilong Wang   +12 more
doaj   +1 more source

Geology, petrography, geochemistry and petrogenesis of intermediate subvolcanic units in the south of Zahedan, Sistan and Baluchestan province, Iran

Journal of Economic Geology, 2022
The study area is located 12 km south of Zahedan city, Sistan and Baluchistan province. Rock units in this area include a series of slightly altered flysch facies units with Eocene age, subvolcanic rocks and basic to intermediate dikes with probably ...
Hamid Rahmani, Mansour Ghorbani
doaj   +1 more source

Variation in gold content of minerals of the Marysville quartz diorite stock, Montana [PDF]

, 1965
The purpose of this thesis was to study the amount and distribution of gold in the minerals of the Marysville quartz diorite stock, Montana. Twenty-eight rock samples were collected from various parts of the Marysville Stock, using a NS-EW grid sample ...
Mantei, Erwin Joseph
core   +1 more source

Steel segment–anchor bolt (cable) structure for TBM tunnels under extremely intense rockburst conditions: Design method and field application

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a steel segment–anchorage support system for open TBM tunnels under extremely intense rockburst conditions. The steel segment resists dynamic impact, while the anchorage structure restrains segment deformation and transfers loads into the rock.
Zhijun Li, Pan Gao, Zhifan Xu, Zhilong Wang, Mingnian Wang   +4 more
wiley   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

Geological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang, Aibing Chen, Jian Yang, Yuan Zhang   +3 more
wiley   +1 more source

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

Geological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang, Khin Zaw, Kakda Kret, Ivan Belousov, Kotaro Yonezu, Koichiro Watanabe, Charles Makoundi   +6 more
wiley   +1 more source

Geology and mineralization of the Pulang supergiant porphyry copper deposit (5.11 Mt) in Shangri-la, Yunnan Province, China: A review

China Geology, 2022
The porphyry copper belt in the Geza island arc in southwestern China is the only Indosinian porphyry copper metallogenic belt that has been discovered and evaluated so far.
Wen-chang Li, Xiang-fei Zhang, Hai-jun Yu, Dong Tao, Xue-long Liu   +4 more
doaj   +1 more source

Petrogenesis and Tectonic Setting of Late Mesozoic Felsic Magmatic Rocks in the Wangmushan Mining District, Northern Fujian, South China

Geological Journal, EarlyView.
The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang, Hong Wentao, Xiao Fan, Jin Guodong, Shi Hongyang, Ma Zhiwang, Wu Chen, Xue Yujingyang   +7 more
wiley   +1 more source