Petrophysical Properties (Density and Magnetization) of Rocks from the Suhbaatar‐Ulaanbaatar‐Dalandzadgad Geophysical Profile in Mongolia and Their Implications

Yang, Tao; Gao, Jintian; Gu, Zheng; Dagva, Baatarkhuu; Tserenpil, Batsaikhan

doi:10.1155/2013/791918

Cited by 8 publications

(4 citation statements)

References 13 publications

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“…Open Journal of Civil Engineering An average density value of 2.63 g/cm 3 was established for all clasts in general, based on measurements from 19 samples. This value lies in the lower part of the range reported for most igneous rocks, which supports the identification of the clasts as rocks of felsic to intermediate composition [45] and corresponds to the geology reported by the Mexican Geological Survey [27].…”

Section: Grain Analysessupporting

confidence: 89%

Volcaniclastic Deposit Analysis Using Grain Size, Digital and Stereological Techniques

Rangel-Durán,

Espejel-García,

Villalobos-Aragón

et al. 2023

OJCE

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This study undertook a comprehensive sedimentological and grain-size analysis of two previously uncharacterized volcanoclastic deposits exposed in the northwestern sector of Chihuahua City, Mexico. The primary objective was to propose a systematic genetic classification for these deposits, employing traditional sedimentological techniques and an advanced computerized granulometric analysis technique based on orthogonal images to discern their grain size distribution. Through these studies, evidence was sought to classify them genetically, presenting arguments to define them either as a lahar or a volcanic debris avalanche. Results were critically compared against existing literature data pertaining to lahars and debris avalanches, yielding moderate success. The analysis identified one of the deposits as a non-eruptive or posteruptive lahar. This identification was substantiated by the delineation of distinct overbank and transition facies within the deposit, providing compelling evidence for its genetic classification.

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Section: Grain Analysessupporting

confidence: 89%

Volcaniclastic Deposit Analysis Using Grain Size, Digital and Stereological Techniques

Rangel-Durán,

Espejel-García,

Villalobos-Aragón

et al. 2023

OJCE

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“…More recently, some papers have established rules and protocols and/or have compiled petrophysical properties in certain regions (e.g. García-Lobón, Rey-Moral, Arias-Llorente, Cueto-Pascual, & Gómez-Paccard, 2003;García-Lobón, Rey-Moral, & Ayala 2006;Hemant & Maus, 2005;Rybakov, Goldshmidt, Rotstein, Fleischer, & Goldberg, 1999;Yang, Gao, Gu, Dagva, & Tserenpil, 2013). These databases, when the data are properly published (georeferenced, fully described, etc.…”

Section: Introductionmentioning

confidence: 99%

Petrophysical properties in the Iberian Range and surrounding areas (NE Spain): 1-density

et al. 2015

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We introduce the first map of density data in Northeastern Spain which can help in the interpretation of gravimetric surveying. The background map is a simplified version of the Geode continuous geological cartography (scale 1:200.000) of the Iberian Range and Ebro basin. These maps are synthetic and homogeneous maps based on previous 1:50,000 scale geological maps (MAGNA). The map uses the ETRS89 datum and UTM coordinates (30T northern zone) and covers an area of 140,000 sq km. The compiled data shown in the map come from previous papers of the region (≈ 700 points) as well as from more than 800 additional points developed in the course of an exploratory project focused on the underground characterization of a potential CO 2 reservoir in the so-called 'Linking Zone'. The new data accomplish some basic criteria; they are accurately georeferenced and lithology, stratigraphic age and other technical details about the measurements (e.g. means and error) and methods are fully displayed.

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“…The initial magnetic susceptibilities and NRM of Riverlands samples have a difference of two orders of magnitude. A possible reason for the difference can be variability in the mineralogy and chemical composition of the stones (Yang et al, 2013). RL2 has the lowest susceptibility and weakest NRM among all experimented stones.…”

Section: Discussionmentioning

confidence: 95%

“…The difference may be due to variability in the mineralogy and chemical composition of the stones (Yang et al, 2013). The susceptibility of stones OP1 and OP2 increased with rises in temperature up to 300°C, and, in the other stones, increased with rises in temperature up to 500°C.…”

Section: Thermomagnetic Propertiesmentioning

confidence: 98%

An Archaeomagnetic Study of Hangi Stones in New Zealand

Kinger¹

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<p>Burnt or fired archaeological artefacts often retain a record of the magnetic field in which they were last heated and cooled. Over the past four years we have collected oriented hangi stones from 10 archaeological sites spread across the North and South Islands of New Zealand. The stones vary in lithology from andesites, originating from the central North Island volcanoes, favoured by Maori for their durability and with remanent magnetization up to 30 A/m, to sandstones and schists from the main axial ranges, with magnetizations as weak as 10-4 A/m. Radiocarbon dating of charcoal fragments retrieved from amongst the stones indicates that the sites span from ca. 1400 AD to the present. In all cases, we have independently oriented and retrieved several stones, and we have made several samples from each stone, either by drilling (standard cylindrical samples) or sawing (pseudo-cubes) in the laboratory. We have calculated site mean palaeomagnetic directions (Dec between 1.5o and 19.6o and Inc between -52.2o and -68.3o) from principal component analysis of thermal demagnetization and alternating field demagnetization data, discarding the data of stones that show evidence of disturbance after cooling. The directions are in good agreement with recently published palaeosecular variation records from lake sediments. We have carried out palaeointensity experiments using the Coe/Thellier method with pTRM and tail checks, and with selection criteria modified to the situation. Palaeointensities range from 50μT to 77μT. Rock magnetic experiments contribute to our understanding of the mineralogy, domain state and blocking temperature spectra. We compare our data with predictions of the global field models ARCH3k and gufm1, and suggest that the addition of our new data will improve these models for the SW Pacific region for the most recent time period. Archaeomagnetic measurements are also used to date hangi sites by matching the palaeo-direction to an established archaeomagnetic dating model, NZPSV1k. Archaeomagnetic dating is used to resolve ambiguities in the calibration of radiocarbon dates, and shows up inconsistencies due to unreliable source material for radiocarbon dating. Archaeomagnetic dating and radiocarbon dating results are combined to give the best estimates of the best age of the hangi sites.</p>

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Petrophysical Properties (Density and Magnetization) of Rocks from the Suhbaatar‐Ulaanbaatar‐Dalandzadgad Geophysical Profile in Mongolia and Their Implications

Cited by 8 publications

References 13 publications

Volcaniclastic Deposit Analysis Using Grain Size, Digital and Stereological Techniques

Volcaniclastic Deposit Analysis Using Grain Size, Digital and Stereological Techniques

Petrophysical properties in the Iberian Range and surrounding areas (NE Spain): 1-density

An Archaeomagnetic Study of Hangi Stones in New Zealand

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