Results 1 to 10 of about 623,919 (404)

LA-ICP-MS Zircon U-Pb Ages, geochemical characteristics, and geological significance of the early cretaceous volcanic rocks in Haitangwan Town, Southern Hainan Island, China. [PDF]

PLoS One
Lin Y, Liang D, Yuan Q, Hu Z, Lv Z, Lv C.   +5 more
europepmc   +2 more sources

Magmatism of northwest of Takestan: The product of asymmetric caldera collapse [PDF]

پترولوژی, 2022
One of the main products of caldera collapses is ignimbrite, and there is a direct relationship between the volume of ignimbrite and caldera dimensions.
Batool Nemati, Ali Asghar Sepahi Gerow, Abbas Asiababha   +2 more
doaj   +1 more source

Study on rock brittleness characteristics of deep volcanic reservoir under different confining pressures

Journal of Petroleum Exploration and Production Technology, 2023
The mechanical properties of deep volcanic reservoir rocks are complex and the brittleness characteristics are not clear. In order to study the brittleness characteristics of deep volcanic rocks, triaxial compression tests and XRD tests under different ...
Guozhou Qiu, Xin Chang, Jing Li, Yintong Guo, Lei Wang, Hongling Ma, Wuhao Guo, Zhenhui Bi   +7 more
doaj   +1 more source

Chemical classification of common volcanic rocks based on degree of silica saturation and CaO/K2O ratio

Anais da Academia Brasileira de Ciências, 2021
Modal classifications of common volcanic rocks are expensive, difficult, or impossible to attain. As a consequence, these rocks are classified using the chemical composition.
JOÃO O.S. SANTOS, LÉO A. HARTMANN
doaj   +1 more source

Development characteristics and petroleum geological significance of Permian pyroclastic flow volcanic rocks in Western Sichuan Basin, SW China

Petroleum Exploration and Development, 2022
By examining field outcrops, drilling cores and seismic data, it is concluded that the Middle and Late Permian “Emeishan basalts” in Western Sichuan Basin were developed in two large eruption cycles, and the two sets of igneous rocks are in unconformable
Hao PENG, Cheng YIN, Qinglin HE, Guoyong XIA, Yong LIU, Tinghu MA, Kang CHEN, Ran LIU, Wang SU   +8 more
doaj   +1 more source

Lithology and tectonomagmatic setting of volcanic and plutonic rocks from the Lak area, southwest Buin Zahra, NW Iran [PDF]

پترولوژی, 2022
The Urumieh-Dokhtar magmatic arc (UDMA) of Iran with a length of about 1700 km and a width of approximately 150 km is mainly composed of Tertiary volcanic rocks and acidic to basic intrusions (Berberian, 1981; Emami et al., 1992; Darvishzadeh, 2003 ...
Mohammad Saeed Firouzbakht, Majid Ghaderi, Hossein Ali Tajeddin   +2 more
doaj   +1 more source

Reservoir Characteristics and Main Controlling Factors of the Mesozoic Volcanic Rocks in the D Oilfield in Southern Gentle Slope Zone of the Laizhouwan Sag

Frontiers in Earth Science, 2021
The Mesozoic volcanic rocks are widely developed in the Bohai Bay basin. The D oilfield, located in the southeast of the Bohai Bay Basin, is a Cenozoic depression developed on the base of the Mesozoic.
Jun Xie, Xiao Hu, Baichuan Li, Yajun Duan, Huizhen Liang, Yanchun Su, Wuchao Cai, Rui Wang   +7 more
doaj   +1 more source

Petrography, geochemistry and tectonic setting of NW Bardaskan volcanic rocks: a case study of Zangalou mine [PDF]

پترولوژی, 2021
The Zangalou mine area, a part of NW Bardaskan magmatic assemblage, located south of Sabzevar and northwest of Bardaskan cities in Khorasan Razavi province.
Mehdi Ghelichkhanip, Azadeh Malekzadeh Shafaroudi, mohammad Hassan Karimpour, Masoud Homam   +3 more
doaj   +1 more source

Control of Paleocene volcanic edifice on favorable reservoirs: a case study of the southwestern Huizhou Sag, Pearl River Mouth Basin

Shiyou shiyan dizhi, 2022
Thickly developed Paleocene volcanic rocks in the southwestern Huizhou Sag of the Pearl River Mouth Basin are continuously filled with lacustrine sedimentary rocks of the overlying Eocene Wenchang Formation in the sag, forming the main rock formations in
Xucheng WANG, Weitao CHEN, Ye HE, Hanqing LIU, Wenyong WANG   +4 more
doaj   +1 more source

Development characteristics and main controlling factors of Carboniferous volcanic reservoirs in the Shixi area, Junggar Basin

Frontiers in Earth Science, 2023
The Carboniferous volcanic reservoirs in the Shixi area of the Junggar Basin are complex and diverse. Identifying the characteristics and main factors controlling high-quality volcanic reservoirs is the key to increasing oil and gas reserves and ...
Abulimiti Yiming, Baoli Bian, Hailei Liu, Jiangtao Wang, Xueyong Wang, Junyong Zhu, Yongcai Zhu, Longsong Liu, Dongxu Su   +8 more
doaj   +1 more source