The implication of the oxygen isotope records in coexisting cherts and phosphates

Computer Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

22

Scientific paper

18 O values have been determined for 53 coexisting chert-phosphate pairs from the Phanerozoic and Precambrian. In addition, 18 O values were also determined for 18 biogenic phosphates from the Phanerozoic. The oxygen isotope data for the chert-phosphate pairs permit the calculation of the temperatures of formation of the chert-phosphate pairs as well as the 18 O of the waters in which they equilibrated. In turn the calculated 18 O of the waters permit the calculation of temperatures from the isotopic data of the biogenic phosphates. The temperatures for the Tertiary and Mesozoic samples are compatible with the literature values determined from oxygen isotope data for well-preserved calcareous marine skeletal remains. The temperatures calculated from the chert-phosphate pairs of the Paleozoic are usually higher and vary in cycles of about a 150 million year period. The early Precambrian temperatures are as high as 80°C and decrease with time. The use of chert-phosphate pairs for temperature determinations are sufficiently promising to warrant further investigations of this type on well preserved chert-phosphate or carbonate-phosphate pairs.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

The implication of the oxygen isotope records in coexisting cherts and phosphates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The implication of the oxygen isotope records in coexisting cherts and phosphates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The implication of the oxygen isotope records in coexisting cherts and phosphates will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-892720

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.