Idioma:

87Sr/86Sr, Na, F, Sr, and La in skeletal fish debris as a measure of the paleosalinity of fossil-fish habitats

Schmitz, Birger ; Aberg, Goran ; Werdelin, Lars ; Forey, Peter ; Bendix-Almgreen, Svend Erik

Geological Society of America bulletin, 1991-06, Vol.103 (6), p.786-794 [Periódico revisado por pares]

Geological Society of America (GSA)

Texto completo disponível

Citações Citado por

Enviar para

Título:
87Sr/86Sr, Na, F, Sr, and La in skeletal fish debris as a measure of the paleosalinity of fossil-fish habitats
Autor: Schmitz, Birger ; Aberg, Goran ; Werdelin, Lars ; Forey, Peter ; Bendix-Almgreen, Svend Erik
Assuntos: alkali metals ; alkaline earth metals ; apatite ; biochemistry ; bones ; Brackish ; Chordata ; ecology ; Elasmobranchii ; fluorine ; fossils ; Freshwater ; geochemistry ; habitat ; halogens ; isotopes ; lanthanum ; living taxa ; metals ; paleobiology ; paleoecology ; paleosalinity ; Phanerozoic ; phosphates ; Pisces ; rare earths ; rock, sediment, soil ; sodium ; Sr-87/Sr-86 ; stable isotopes ; stratigraphy ; strontium ; trace elements ; Vertebrata
É parte de: Geological Society of America bulletin, 1991-06, Vol.103 (6), p.786-794
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: Forty-six samples of apatite from lower vertebrates (ostracoderms, placoderms, elasmobranchs, actinopterygians, and crossopterygians), ranging in age from Silurian to Recent, were analyzed to determine each specimen's 87Sr/86Sr isotopic ratio and content of the elements Na, F, Sr, and La. Our aim was to determine whether these chemical parameters can yield reliable information about the paleosalinity conditions of the ancient fish habitats. In recent times, the uniform 87Sr/86Sr isotopic ratio and Na, F, and Sr abundances of sea water in general differ characteristically from the corresponding ratios and abundances of fresh waters and low-saline brackish waters. For evaluation of the data on fossils, analyses were made on recent skeletal-fish apatite derived from different waters with known Sr-isotopic ratio and salinity. Salinity interpretations based on our chemical analyses are generally congruent with the salinity conditions indicated by other paleoenvironmental parameters inherent in the fossil-bearing strata. Some fossil specimens, however, gave signals seemingly incompatible with prevailing opinions regarding the environment in which the embedding strata formed. In some cases, the divergences could be accounted for by erratic occurrences of reworked material. Other cases, such as ostracoderm and placoderm remains from the Old Red Sandstone, are less easy to unravel. The method tested in this study may be a useful tool, clarifying, for example, salinity conditions during formation of various Old Red Sandstone deposits.
Editor: Geological Society of America (GSA)
Idioma: Inglês

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

87Sr/86Sr, Na, F, Sr, and La in skeletal fish debris as a measure of the paleosalinity of fossil-fish habitats

Schmitz, Birger ; Aberg, Goran ; Werdelin, Lars ; Forey, Peter ; Bendix-Almgreen, Svend Erik

Geological Society of America (GSA)

Buscando em bases de dados remotas. Favor aguardar.