In samples from 1575 to 1982 mbsf anhydrite leached from whole-rock powders. 87Sr/86Sr and Sr/Ca determined following methods described in (Teagle et al., 1996, doi:10.2973/odp.proc.sr.148.113.1996, Teagle et al., 1998, doi:10.2973/odp.proc.sr.158.223.1998). For the period of the analysis (Jan. 1994-Dec. 1995) NIST SRM 987 gave 87Sr/86Srs0.710244 +/- 0.000018 (2 sigma, n = 115). Full analytical procedural blanks were <50 pg for Sr. delta18O following (Pickthorn and O´Neil, 1985). Repeated extractions and measurements of samples and standards were...
Height of tropopause 9784 m, precipitable water content 1.1700 cm
Height of tropopause 8137 m, precipitable water content 1.1641 cm
core depth as mcd
All increments counted, none excluded, the sum of all increments gives the age after "first increment formation", NOT specifically hatch date! Note, too, that the last increment was always deleted because presumably its formation couldn't be completed on the day of catch.