SeymourIslandAgeModels: Age models for the K/Pg boundary on Seymour Island,...

In DAIME: Effects of Changing Deposition Rates

Description

Contains age models for the extinction at the K/Pg boundary on Seymour Island, Antarctica. Age models are based on

*the Stratigraphic height of the K/Pg boundary of 1007.5 m with an age of 66.04 Ma (Renne et al. 2013)

*magnetostratigraphy from Tobin et al. (2012) and ages from Gradstein et al. (2012), yielding an age of 66.389 Ma at the stratigraphic height of 934.4 m.

The stratigraphic height of a low deposition interval is assumed to be at 959.5 m based on section A from Witts et al. (2016).

Reference for stratigraphic heights is the composite section by Witts et al. (2016).

Usage

data(SeymourIslandBins)

Format

A list with entries named after the age models described in Hohmann (in preparation). Each of these age models consists of three vectors: 'age' and 'height' correspond to the age of deposition of a given stratigraphic height, and 'parameters' contains a description of the parameters used to generate the age models

Source

Gradstein, Felix M., et al., eds. The geologic time scale 2012. elsevier, 2012.

Renne, Paul R., et al. "Time scales of critical events around the Cretaceous-Paleogene boundary." Science 339.6120 (2013): 684-687.

Tobin, Thomas S., et al. "Extinction patterns, delta18 O trends, and magnetostratigraphy from a southern high-latitude Cretaceous/Paleogene section: Links with Deccan volcanism." Palaeogeography, Palaeoclimatology, Palaeoecology 350 (2012): 180-188.

Hohmann, Niklas. 2018. Quantifying the Effects of Changing Deposition Rates and Hiatii on the Stratigraphic Distribution of Fossils. <doi:10.13140/RG.2.2.23372.51841>.

Witts, James D., et al. "Macrofossil evidence for a rapid and severe Cretaceous/Paleogene mass extinction in Antarctica." Nature communications 7 (2016): 11738.

Examples

data("SeymourIslandAgeModels")
#Select age model B
my.agemodel=SeymourIslandAgeModels$B
#check parameters of age model
my.agemodel$parameters
plot(my.agemodel$age,my.agemodel$height,type='l',
  xlim=rev(range(my.agemodel$age)),xlab='Age [Ma]',ylab='Stratigraphic Height [m]')

DAIME documentation built on March 13, 2020, 2:54 a.m.