FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1980102332> ?p ?o ?g. }

• W1980102332 endingPage "1448" @default.
• W1980102332 startingPage "1439" @default.
• W1980102332 abstract "Some interrelated aspects of lead isotope systematics are exposed and their bearing on the problem of planetary evolution is discussed. In particular, three concepts are stressed: (1) Point of isometry (PI): Pb-Pb isochrons of rocks of different ages which remain undisturbed since they were derived from the same homogeneous source intersect with each other at a single point (point of isometry) which describes the present day Pb composition of their common source. For a continually differentiating planet, where the composition of a source changes with time, a ‘domain’ rather than a ‘point’ of isometry may exist. However, because of geometric effects an illusionary point of isometry yielding a lower limit to the age of ‘the’ source—may still be obtained. (2) Dispersive isochronism: Isochronous, cognate, closed systems (e.g. an undisturbed rock and its minerals) that contain variable Th/U do not define an isochron on 208,206,204pb correlation diagram. The dispersion of the isotopic data of such systems from a line is proportional to the variability in Th/U. It is suggested that the individual dispersion trajectories may be experimentally determined. In theory these trajectories must all meet in a point of convergence (PC) which represents a true end point common to the systems. PC yields the composition of initial Pb which can be used to calculate the age of the source irrespective of one's success or failure in directly determining initial Pb from U and Th-poor mineral phases. Some experimental evidence to the feasibility of the method is provided. (3) Congruency of galenas: It is possible to construct a hypothetical ‘source profile’ which shows a spectrum of Pb compositions for sources of different ages which could have each produced a given galena at hand. Galenas of different ages, derived from the same homogeneous source, have different source profiles which nevertheless intersect each other at a single point corresponding to their parental source. Establishment of a point of intersection for a number of galenas is not an unequivocal proof for a homogeneous source, however, because mild heterogeneities could be smoothed out by geometric effects. Old conformable galenas yield an intersection corresponding to a common source which is 4.54 Byr old." @default.
• W1980102332 created "2016-06-24" @default.
• W1980102332 creator A5065386141 @default.
• W1980102332 date "1981-09-01" @default.
• W1980102332 modified "2023-10-14" @default.
• W1980102332 title "Aspects of isochronism in Pb isotope systematics—application to planetary evolution" @default.
• W1980102332 cites W1968337445 @default.
• W1980102332 cites W1973530406 @default.
• W1980102332 cites W1981045040 @default.
• W1980102332 cites W2007105153 @default.
• W1980102332 cites W2011636272 @default.
• W1980102332 cites W2031312028 @default.
• W1980102332 cites W2040824381 @default.
• W1980102332 cites W2043544063 @default.
• W1980102332 cites W2043617299 @default.
• W1980102332 cites W2047040143 @default.
• W1980102332 cites W2072658023 @default.
• W1980102332 cites W2073066596 @default.
• W1980102332 cites W2093147908 @default.
• W1980102332 cites W2100575321 @default.
• W1980102332 cites W2164761825 @default.
• W1980102332 doi "https://doi.org/10.1016/0016-7037(81)90277-5" @default.
• W1980102332 hasPublicationYear "1981" @default.
• W1980102332 type Work @default.
• W1980102332 sameAs 1980102332 @default.
• W1980102332 citedByCount "13" @default.
• W1980102332 crossrefType "journal-article" @default.
• W1980102332 hasAuthorship W1980102332A5065386141 @default.
• W1980102332 hasConcept C127313418 @default.
• W1980102332 hasConcept C134306372 @default.
• W1980102332 hasConcept C17409809 @default.
• W1980102332 hasConcept C199289684 @default.
• W1980102332 hasConcept C33923547 @default.
• W1980102332 hasConcept C46381822 @default.
• W1980102332 hasConcept C487381 @default.
• W1980102332 hasConcept C82457910 @default.
• W1980102332 hasConceptScore W1980102332C127313418 @default.
• W1980102332 hasConceptScore W1980102332C134306372 @default.
• W1980102332 hasConceptScore W1980102332C17409809 @default.
• W1980102332 hasConceptScore W1980102332C199289684 @default.
• W1980102332 hasConceptScore W1980102332C33923547 @default.
• W1980102332 hasConceptScore W1980102332C46381822 @default.
• W1980102332 hasConceptScore W1980102332C487381 @default.
• W1980102332 hasConceptScore W1980102332C82457910 @default.
• W1980102332 hasIssue "9" @default.
• W1980102332 hasLocation W19801023321 @default.
• W1980102332 hasOpenAccess W1980102332 @default.
• W1980102332 hasPrimaryLocation W19801023321 @default.
• W1980102332 hasRelatedWork W1537500651 @default.
• W1980102332 hasRelatedWork W1956257808 @default.
• W1980102332 hasRelatedWork W1980102332 @default.
• W1980102332 hasRelatedWork W1986324795 @default.
• W1980102332 hasRelatedWork W2015921349 @default.
• W1980102332 hasRelatedWork W2029683395 @default.
• W1980102332 hasRelatedWork W2076206476 @default.
• W1980102332 hasRelatedWork W2089260608 @default.
• W1980102332 hasRelatedWork W2167357685 @default.
• W1980102332 hasRelatedWork W2387480945 @default.
• W1980102332 hasVolume "45" @default.
• W1980102332 isParatext "false" @default.
• W1980102332 isRetracted "false" @default.
• W1980102332 magId "1980102332" @default.
• W1980102332 workType "article" @default.