This post was edited by Rita Freuder on Feb, 2011
The scientist Cinzia Cervato on the authors list of the EET chapter has responded to my question about units of shear strength with a short email and link to a paper about how shear strength is measured.
Cinzia's reply:
The units for shear strength should be pascals (Newtons/m2) - you can find more details on these measurements in this article
http://www-odp.tamu.edu/publications/tnotes/tn26/CHAP9.PDF
Carbon dating is used only for materials younger than about 70,000 years because the concentration of C-14 is below the instrumental detection limit after about 70,000 years. The most common dating methods used for these Paleogene cores are a combination of biostratigraphy and magnetostratigraphy. For this specific hole and time interval, we used planktonic foraminifera and calcareous nannoplankton for the relative dating of these sections. I didn't find any absolute age date in this interval.
The scientist Cinzia Cervato on the authors list of the EET chapter has responded to my question about units of shear strength with a short email and link to a paper about how shear strength is measured.
Cinzia's reply:
The units for shear strength should be pascals (Newtons/m2) - you can find more details on these measurements in this article
http://www-odp.tamu.edu/publications/tnotes/tn26/CHAP9.PDF
Carbon dating is used only for materials younger than about 70,000 years because the concentration of C-14 is below the instrumental detection limit after about 70,000 years. The most common dating methods used for these Paleogene cores are a combination of biostratigraphy and magnetostratigraphy. For this specific hole and time interval, we used planktonic foraminifera and calcareous nannoplankton for the relative dating of these sections. I didn't find any absolute age date in this interval.
4026:13742
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