biostratigraphy
/ˌbʌɪə(ʊ)strəˈtɪɡrəfi
/noun [mass noun]
The branch of stratigraphy concerned with fossils and their use in dating rock formations.This is the basic unit of biostratigraphy in which fossils are used in the correlation of rock units....
- This is followed by a brief discussion of the methods for division of the stratigraphic record and geological time, with reviews of litho- and biostratigraphy, radiometric dating, magneto- and chemo-stratigraphy.
- This site is dated by biostratigraphy to the early Pleistocene, with an estimated age of 1.3 + or - 0.1 Ma.
Derivatives
biostratigrapher
- An informal technical alliance of industry biostratigraphers from more than ten companies advised and helped Unocal on conceptual development of IPS into a commercial package for general industry use.
- Most of us who have worked with conodonts have done so as biostratigraphers and we have thus paid scant attention to the suprageneric classification of the species reconstructed in our studies.
- Those of us employed as biostratigraphers in the oil and gas industry are routinely asked to provide results with much finer stratigraphic resolution than what is possible with conventional techniques.
biostratigraphic
- The seismic horizons have been calibrated using biostratigraphic and lithological data from exploration boreholes in the UK and Faroes sectors.
- During the 1990s, combined investigations of Western and Asian teams on many of the more important Asian sections added a wealth of new stratigraphic and biostratigraphic information.
- Advances in biostratigraphic precision and in isotopic age-dating now permit much more precise definition of the deformation episodes, with the result that many distinct phases are recognized.
biostratigraphical
- Throughout this paper the biozones are denoted using italics because they are considered to be biostratigraphical units, not chronostratigraphical or geochronological units as implied by some Jurassic workers.
- It is increasingly clear that major problems in testing the oceanic model rest in imprecisions of biostratigraphical correlation, particularly between different facies.
- The local biostratigraphical ranges derived from the various sections have been combined into global ranges through graphic correlation, following the process described in more detail by MacLeod and Shaw.
biostratigraphically
- They have been widely used biostratigraphically in Jurassic to Pleistocene rock sequences.
- In all cases, biostratigraphically well-dated reference sections, against which the relevant geochemical data have been calibrated, are required in the first instance.
- Neither their taxonomy nor their nomenclature is settled, they are underutilized biostratigraphically and paleoenvironmentally, and evolutionary relationships within the group are largely unexplored.