FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4221006590> ?p ?o ?g. }

• W4221006590 endingPage "946" @default.
• W4221006590 startingPage "929" @default.
• W4221006590 abstract "Abstract Among all geophysical methods, gamma ray spectrometry is not widely used in impact cratering studies, despite its efficiency in the investigation of physical/chemical changes in rocks. The application of gamma ray spectrometry method to data from the Maâdna crater is aimed at detection and verification of the presumed impact‐derived melt rocks or breccias, as well as discussing its implications on process of formation. The resulting information also demonstrates the potential of these specific data regarding our general understanding of impact cratering, while a few case studies have been reported in the literature to date within the impact community. Maâdna crater is dated at 2.6–3.1 Ma of ~1.7 km and is emplaced in Upper‐Cretaceous to Eocene limestones of the northern part of the Algerian Saharan platform. Although originally accepted as an impact crater, its origin is still controversial. Several thousands of field measurements were taken using a field portable gamma ray spectrometer. The measurements can be equivalently expressed by up to about 42 km footpath recordings in real‐time ground acquisitions, covering the entire structure and surrounding areas beyond the crater edge. The collected data included the total count (Tc) and the concentrations of the radionuclides calculated in wt% for K and in ppm for U and Th. The spectra rates recorded inside and outside the crater did not exceed the maximum average concentrations corresponding to 75.3 Cps, 4.94 ppm, 10.5 ppm, and 1.79 wt% for Tc, U, Th, and K, respectively. The database was processed using various gridding data methods, from which the minimum curvature was adopted as it provides a powerful visualization and interpretation of the anomalous distribution of radioactive elements and their corresponding ratios maps. In addition, an improved statistical analysis was carried out in order to extract a maximum of information about the radiometric response of each rock unit. This analysis consisted of a series of multiple linear regression, mean differencing, Q–Q (quantile–quantile) plots, and ternary mapping. Maps and plots of various models allowed us to examine the background variability in the distribution of K, Th, and U concentrations at the surface of the three distinctive litho‐type zones in the surveyed area, which are the central part, the crater edge, and the outside of the crater including the wadi deposits. Observed results of different radiometric responses clearly reflect the effect of various lithological units, especially in the areas with high K concentration. Note that this positive K‐anomaly has been observed in recent deposits that fill the Maâdna depression or external wadi beds. In contrast, the surrounding limestone rocks showed lower levels of radioelement concentrations. Relevant similarities found between the radiometric signatures of the Neogene formations inside and outside the crater can be considered as a strong argument to exclude preferential radionuclides enrichment caused by an impact event. Consequently, the natural origin of radioactive sources can be easily explained. Compared to other radiometric signatures documented on proven impact structures, the Maâdna structure has been notably discussed in the context of a diapiric hypothesis rather than a meteoritic one. Moreover, the methods used here contribute to our knowledge of the regional sedimentary history in terms of natural radioactivity." @default.
• W4221006590 created "2022-04-03" @default.
• W4221006590 creator A5005925806 @default.
• W4221006590 creator A5025439340 @default.
• W4221006590 creator A5049882383 @default.
• W4221006590 creator A5053023878 @default.
• W4221006590 creator A5066769387 @default.
• W4221006590 creator A5073140597 @default.
• W4221006590 creator A5088761958 @default.
• W4221006590 date "2022-03-29" @default.
• W4221006590 modified "2023-09-23" @default.
• W4221006590 title "Field gamma ray spectrometry as a diagnostic tool for the assessment of hypothetical melt rocks from the Maâdna structure (Talemzane, Algeria): Implications for the crater formation process" @default.
• W4221006590 cites W133443291 @default.
• W4221006590 cites W1519613038 @default.
• W4221006590 cites W1707258868 @default.
• W4221006590 cites W1973138394 @default.
• W4221006590 cites W1991076423 @default.
• W4221006590 cites W2005452243 @default.
• W4221006590 cites W2012987972 @default.
• W4221006590 cites W2041712022 @default.
• W4221006590 cites W2043837161 @default.
• W4221006590 cites W2062403005 @default.
• W4221006590 cites W2074598116 @default.
• W4221006590 cites W2089062385 @default.
• W4221006590 cites W2098176550 @default.
• W4221006590 cites W2099892731 @default.
• W4221006590 cites W2142821924 @default.
• W4221006590 cites W2161549436 @default.
• W4221006590 cites W2161607713 @default.
• W4221006590 cites W2185542875 @default.
• W4221006590 cites W2258522493 @default.
• W4221006590 cites W2513043765 @default.
• W4221006590 cites W2528638395 @default.
• W4221006590 cites W2624669186 @default.
• W4221006590 cites W2662296658 @default.
• W4221006590 cites W2753443897 @default.
• W4221006590 cites W2783706479 @default.
• W4221006590 cites W2891110654 @default.
• W4221006590 cites W2982043862 @default.
• W4221006590 cites W3006718898 @default.
• W4221006590 cites W3045061726 @default.
• W4221006590 cites W3048971375 @default.
• W4221006590 cites W3080559169 @default.
• W4221006590 cites W3168892453 @default.
• W4221006590 cites W4251766404 @default.
• W4221006590 cites W43105807 @default.
• W4221006590 cites W1980022218 @default.
• W4221006590 doi "https://doi.org/10.1111/maps.13804" @default.
• W4221006590 hasPublicationYear "2022" @default.
• W4221006590 type Work @default.
• W4221006590 citedByCount "0" @default.
• W4221006590 crossrefType "journal-article" @default.
• W4221006590 hasAuthorship W4221006590A5005925806 @default.
• W4221006590 hasAuthorship W4221006590A5025439340 @default.
• W4221006590 hasAuthorship W4221006590A5049882383 @default.
• W4221006590 hasAuthorship W4221006590A5053023878 @default.
• W4221006590 hasAuthorship W4221006590A5066769387 @default.
• W4221006590 hasAuthorship W4221006590A5073140597 @default.
• W4221006590 hasAuthorship W4221006590A5088761958 @default.
• W4221006590 hasConcept C121332964 @default.
• W4221006590 hasConcept C12294951 @default.
• W4221006590 hasConcept C127313418 @default.
• W4221006590 hasConcept C151730666 @default.
• W4221006590 hasConcept C17409809 @default.
• W4221006590 hasConcept C177322064 @default.
• W4221006590 hasConcept C179537507 @default.
• W4221006590 hasConcept C185592680 @default.
• W4221006590 hasConcept C199289684 @default.
• W4221006590 hasConcept C2776779945 @default.
• W4221006590 hasConcept C2992664116 @default.
• W4221006590 hasConcept C62074269 @default.
• W4221006590 hasConcept C8058405 @default.
• W4221006590 hasConcept C87355193 @default.
• W4221006590 hasConceptScore W4221006590C121332964 @default.
• W4221006590 hasConceptScore W4221006590C12294951 @default.
• W4221006590 hasConceptScore W4221006590C127313418 @default.
• W4221006590 hasConceptScore W4221006590C151730666 @default.
• W4221006590 hasConceptScore W4221006590C17409809 @default.
• W4221006590 hasConceptScore W4221006590C177322064 @default.
• W4221006590 hasConceptScore W4221006590C179537507 @default.
• W4221006590 hasConceptScore W4221006590C185592680 @default.
• W4221006590 hasConceptScore W4221006590C199289684 @default.
• W4221006590 hasConceptScore W4221006590C2776779945 @default.
• W4221006590 hasConceptScore W4221006590C2992664116 @default.
• W4221006590 hasConceptScore W4221006590C62074269 @default.
• W4221006590 hasConceptScore W4221006590C8058405 @default.
• W4221006590 hasConceptScore W4221006590C87355193 @default.
• W4221006590 hasIssue "5" @default.
• W4221006590 hasLocation W42210065901 @default.
• W4221006590 hasOpenAccess W4221006590 @default.
• W4221006590 hasPrimaryLocation W42210065901 @default.
• W4221006590 hasRelatedWork W1589322612 @default.
• W4221006590 hasRelatedWork W1991629686 @default.
• W4221006590 hasRelatedWork W2036726182 @default.
• W4221006590 hasRelatedWork W2042506091 @default.
• W4221006590 hasRelatedWork W2051818406 @default.
• W4221006590 hasRelatedWork W2070673271 @default.
• W4221006590 hasRelatedWork W2161607713 @default.

• next