Results 11 to 20 of about 14,560 (230)

Alkaline diagenesis and its effects on reservoir porosity: A case study of Upper Triassic Chang 7 Member tight sandstone in Ordos Basin, NW China

open access: diamondPetroleum Exploration and Development, 2015
Petrologic features, diagenetic processes and origins of different pore types of Upper Triassic Chang 7 (7th member of Yanchang Formation) tight sandstones in the Ordos Basin were analyzed based on cast thin sections, scanning electron microscope (SEM ...
Haihua ZHU   +7 more
doaj   +2 more sources

A study of the effects of early diagenesis on the geotechnical properties of carbonate sediments (North West Shelf, Australia) [PDF]

open access: yesScientific Reports
Carbonate sediments are often regarded as problematic in geotechnical engineering due to the high variability of their properties. Understanding and quantifying this variability will become increasingly critical in the years ahead, notably with respect ...
Ulysse Lebrec   +6 more
doaj   +2 more sources

Assessing the Effect of Large Igneous Provinces on Global Oceanic Redox Conditions Using Non‐traditional Metal Isotopes (Molybdenum, Uranium, Thallium)

open access: yesGeophysical Monograph Series, Page 305-323., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Brian Kendall   +2 more
wiley  

+8 more sources

Polyphase deformation of the Youjiang fold-and-thrust belt during the Mesozoic: Implications for the tectonic transition of the South China block

open access: yesFrontiers in Earth Science, 2023
The South China block (SCB) experienced the tectonic transition from the Paleo-Tethys to the Paleo-Pacific tectonic domains during the Mesozoic, but the transition process is hotly debated. The Youjiang fold-and-thrust belt (YFTB), in the interior of the
Jia-Xiu Hu   +12 more
doaj   +1 more source

Eocene paleoelevation of the Tuoyun Basin, northeastern Pamirs: Evidence from a lava-vesicle-based paleoaltimeter

open access: yesJournal of Asian Earth Sciences: X, 2023
The arc-shape Pamir tectonic belt is located on the northwestern margin of the Tibetian plateau. At present, there are many different understandings on the history of the Pamir Plateau uplift, mainly on the time of uplift, which seriously affects the ...
Wengao Zhang   +3 more
doaj   +1 more source

Cassiterite U-Pb dating and micro-XRF analysis constraint on the formation of Xinlu Sn-Zn deposit, South China

open access: yesFrontiers in Earth Science, 2023
This study presents rock slab and thin section reflection mapping, element mapping by Micro-XRF (μ-XRF) analysis, and in situ cassiterite U-Pb laser ablation-inductively coupled plasma mass spectrometer (LA-ICP-MS) ages of the Xinlu Sn-Zn deposit ...
Chang-Hao Xiao   +10 more
doaj   +1 more source

Research progress of carbonate rock diagenesis

open access: yes地质科技通报, 2023
Diagenesis is one of the important genesis of carbonate reservoirs, and it is also an important geological factor for the evaluation and prediction of carbonate reservoirs.
Fengfeng Li, Yu Ye, Yichang Yu, Rui Guo
doaj   +1 more source

Geological characteristics and metallogenic age of Tengshan'ao Sn deposit in Dayishan of South Hunan and its prospecting significance

open access: yesSolid Earth Sciences, 2021
The Tengshan'ao Sn deposit, located at the Dayishan ore field, Nanling Range, is one of the recently explored deposits in this region. In this study, LA-MC-ICP-MS cassiterite U–Pb and muscovite 40Ar-39Ar isotopic dating analyses for altered granite-type ...
Zunzun Zhang   +9 more
doaj   +1 more source

The Control of Diagenesis and Mineral Assemblages on Brittleness of Mudstones

open access: yesFrontiers in Earth Science, 2021
The variation in mineral composition will affect the rock brittleness, thus the change of mineral assemblages during diagenesis has a potential control on the brittleness of mudstones.
Jiazong Du   +7 more
doaj   +1 more source

Numerical simulation of diagenetic evolution and porosity prediction in eastern area of Wushi Sag

open access: yes地质科技通报, 2022
The commercial oil fields discovered in the eastern area of Wushi Sag in recent years are mainly formed in a complex continental sedimentary environment, which was influenced by the tectonic movement, sedimentation and diagenesis.The reservoir in the ...
Li Yang   +4 more
doaj   +1 more source

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