Results 71 to 80 of about 4,773 (290)
On the viscoelastic characterization of the Jeffreys-Lomnitz law of creep [PDF]
Rheol. Acta, Vol. 51 (2012), pp. 783-791, 2011 In 1958 Jeffreys proposed a power law of creep, generalizing the logarithmic law earlier introduced by Lomnitz, to broaden the geophysical applications to fluid-like materials including igneous rocks. This generalized law, however, can be applied also to solid-like viscoelastic materials.
arxiv +1 more source
Lacustrine and fan‐delta sediments in syn‐rift lake basins
The Depositional Record, EarlyView.A consistent model for the sequence framework and depositional pattern of asymmetric half‐grabens in syn‐rift lake basins bounded by active faults has been established, complementing existing models for marine rift successions. Syn‐rift lake basins are characterised by relatively small dimensions, steep slopes, poorly developed shoreline strata ...
Qianyou Wang +6 more
wiley +1 more source
An overview of sensing platform-technological aspects for vector magnetic measurement: a case study of the application in different scenarios [PDF]
arXiv, 2020 Magnetic sensing platform techniques have been used in many years in an attempt to better evaluate the likelihood of recoverable hydrocarbon reservoirs by determining the depth and pattern of sedimentary rock formations containing magnetic minerals, such as magnetite. Utilizing airplanes, large-area magnetic surveys have been conducted to estimate, for
arxiv
Exponential Decay Of Concentration Variance During Magma Mixing: Robustness Of A Volcanic Chronometer And Implications For The Homogenization Of Chemical Heterogeneities In Magmatic Systems [PDF]
, 2017 The mixing of magmas is a fundamental process in the Earth system causing extreme compositional variations in igneous rocks. This process can develop with different intensities both in space and time, making the interpretation of compositional patterns in igneous rocks a petrological challenge.
arxiv +1 more source
The Depositional Record, EarlyView.A limestone cave in the NW Dinarides exhibits an anomalous presence of montmorillonite clay, not commonly found in surrounding caves, posing questions about its origin and age. Analysis reveals a composition similar to weathered tephra from the Smrekovec Volcanic Complex, suggesting transport by north‐east winds.
Nadja Zupan Hajna +12 more
wiley +1 more source
Chondrules and Nebular Shocks [PDF]
, 2002 Beneath the fusion-encrusted surfaces of the most primitive stony meteorites lies not homogeneous rock, but a profusion of millimeter-sized igneous spheres. These chondrules, and their centimeter-sized counterparts, the calcium-aluminum-rich inclusions, comprise more than half of the volume fraction of chondritic meteorites.
arxiv +1 more source
Hydrocarbons in igneous rock of Brazil: A review
Petroleum Research, 2020 Igneous rocks are widely developed in many hydrocarbon-bearing sedimentary basins in Brazil, and some igneous rocks play positive roles in the oil and gas accumulation process.
Kangxu Ren +3 more
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Silica Percentages of Igneous Rocks [PDF]
Geological Magazine, 1921 Figs. I–VII give a graphic representation of the average silica percentage of a number of igneous rock types, so arranged as to show the relation between silica-percentage and rock nomenclature. All the analyses used were obtained from the 1917 edition of H. S. Washington's Chemical Analyses of Igneous Rocks”.
Eyles, V. A., Simpson, J. B.
openaire +2 more sources
Fracturing behaviors of flawed granite induced by dynamic loadings: A study based on DIP and PFC
Deep Underground Science and Engineering, EarlyView.This research examines granite's mechanical properties under split‐Hopkinson pressure bar testing, focusing on factors such as grain size and flaw dimensions. The study reveals that tension cracks are prevalent across grain sizes, with most intergrain cracks occurring between feldspar and quartz.
Xiao Wang +5 more
wiley +1 more source
Bulletin of the Marine Geology, 2017 Three igneous rock samples from the coast and five sediments from the marine of Ujung Penyusuk Waters have been used for chemistry analysis as the basic determination of sediment source.
Ediar Usman
doaj