Results 11 to 20 of about 559,376 (319)

Evolution and changes of the ancient Luanhe fluvial fan since the Quaternary in Tangshan, Hebei Province

open access: yesDizhi lixue xuebao, 2023
The study of the ancient Luanhe alluvial fan has focused more on the Holocene, and no systematic study has been conducted on its Pleistocene evolution and variation.
CHEN Hongqiang   +6 more
doaj   +1 more source

Pore structure and physical properties of Quaternary weak diagenetic shales

open access: yesShiyou shiyan dizhi, 2022
The biogas of Quaternary weak diagenetic shale has a wide exploration prospect, and the understanding of pore structure and physical properties of these shales is conducive to promote the geological theory of shale biogas reservoir.
Xianglu TANG   +6 more
doaj   +1 more source

Carbinatitic magmatism evidence in the Quaternary volcanic rocks in the west of Nowbaran, NW of Iran [PDF]

open access: yesپترولوژی, 2019
The fourteen numbers of ultrabasic volcanoes eruption in the west of Nowbaran are located in the west margin of Iranian central zone near to the Sanandaj-Sirjan zone.
Bahman Rahimzadeh   +3 more
doaj   +1 more source

Application of GF-2 remote sensing data for typical Quaternary stratigraphic survey in Gaizi River Basin

open access: yes地质科技通报, 2021
The development of domestic high resolution remote sensing satellite technology provides a new means for the investigation of macroscopic, local and detailed characteristics of the Quaternary.Alluvial-diluvial fans, valley terraces, glacial deposits are ...
Zhijun Zhang   +7 more
doaj   +1 more source

Classification of quaternary Hermitian self-dual codes of length 20 [PDF]

open access: yes, 2010
A classification of quaternary Hermitian self-dual codes of length 20 is given. Using this classification, a classification of extremal quaternary Hermitian self-dual codes of length 22 is also given.Comment: 9 pages.
Harada, Masaaki, Munemasa, Akihiro
core   +1 more source

40Ar/39Ar ages of Quaternary volcanic rocks from the midwest of the Leizhou Peninsula, and their geologic significance

open access: yesDizhi lixue xuebao, 2023
Quaternary volcanic rocks are widely distributed in the Leizhou Peninsula, but the age of volcanic formation remains controversial. This study used the high-precision laser stepwise heating 40Ar/39Ar method to date the age of volcanic samples from the ...
LI Xiang   +4 more
doaj   +1 more source

Impact of the capping layers on lateral confinement in InAs/InP quantum dots for 1.55 um laser applications srudied by magneto-photoluminescence. [PDF]

open access: yes, 2005
We have used magnetophotoluminescence to study the impact of different capping layer material combinations (InP, GaInAsP quaternary alloy, or both InP and quaternary alloy) on lateral confinement in InAs/InP quantum dots (QDs) grown on (311)B orientated ...
Caroff, P.   +9 more
core   +3 more sources

Dynamic Accumulation of the Quaternary Shale Biogas in Sanhu Area of the Qaidam Basin, China

open access: yesEnergies, 2022
Biogas resources in the Sanhu area of the Qaidam Basin have great potential, but there are few studies on biogas from shale, especially on the accumulation conditions of shale biogas. The study of biogas accumulation conditions of quaternary shale in the
Zeyu Shao   +8 more
doaj   +1 more source

Geomorphic signal of active faulting at the northern edge of Lut Block. Insights on the kinematic scenario of Central Iran [PDF]

open access: yes, 2016
Recent works documented Neogene to Quaternary dextral strike-slip tectonics along the Kuh-e-Sarhangi and Kuh-e-Faghan intraplate strike-slip faults at the northern edge of the Lut Block of Central Iran, previously thought to be dominated by sinistral ...
Claudio, Faccenna   +6 more
core   +1 more source

Microstratigraphic Records as Tools for the Detection of Climatic Changes in Tana di Badalucco Cave (Liguria, NW Italy)

open access: yesGeosciences, 2019
Tana di Badalucco cave is located in Imperia (Liguria, Italy), not far from the French border. This site is scarcely known and it has never been studied accurately, even though different archaeological excavations have returned really important elements,
Eleonora Sessa   +6 more
doaj   +1 more source

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