Gurmeet Singh posted an Question
December 21, 2020 • 01:00 am 30 points
  • IIT JAM
  • Geology (GG)

. past seawater temperature can be reconstructe from the: ed a. oxygen isotopic composition of the cal. careous foraminifera b. carbon isotopic composition of t

. Past seawater temperature can be reconstructe from the: ed A. Oxygen isotopic composition of the cal. careous foraminifera B. Carbon isotopic composition of the cal. B. careous foraminifera C. Carbon isotopic composition agglutinated C. foraminifera D. Oxygen isotopic composition of aggluti nated foraminifera (DU-2014

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    Sajan sarthak

    carbon isotope doesn't fractionate in a little temperature variation...but oxygen does

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    Rahul kumar Best Answer

    Answer (A) Oxygen Isotope composition of the calcareous foraminifera Oxygen Isotropic composition of calcareous foraminifera can be used to reconstruct past sea water temperature. Stable isotopic composition are very useful for reconstruction of past seawater temperature because their incorporation in foraminiferal shell is temperature dependent.

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    Sajan sarthak best-answer

    By taking the oxygen isotopic analysis of calcareous foraminifera we can construct paleo temperature as the carbonate shell of formminifera has capacity of taking oxygen isotopes whichever is available , whether it is O 16 or O 18. So option A is the answer

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