from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology The
intensityof geomagnetismat a given location at a particular time in the geologic past
from Wiktionary, Creative Commons Attribution/Share-Alike License
Holocene history of the Larsen-A Ice Shelf constrained by geomagnetic paleointensity dating, Geology, 31, 749-752.
Records of high-frequency (,10 k.y.) geomagnetic field paleointensity variations can serve as a global, millennial-scale correlation and dating tool (Channell et al., 2000; Laj et al., 2000; Stoner et al., 2002).
Here we demonstrate the utility of geomagnetic field paleointensity as a dating tool for Holocene sediment via tuning with an independently dated reference curve.
It is likely that the discrepancies in the timing of these events are due to challenges associated with the derivation of an appropriate correction factor to account for marine radiocarbon reservoir variations and the variable input of reworked carbon: hence the appeal of the paleointensity method.
The paleointensity-based chronology eliminates these complications and enables us to establish the timing of events in the history of LIS-A.
#236 The first link there “Holocene history of the Larsen-A Ice Shelf constrained by geomagnetic paleointensity..”
Our absolute intensity reference curve (denoted ABSINT) is a compilation of more than 2000 absolute paleointensity determinations made on archaeological baked clays (pottery, bricks) and recent volcanic samples from around the world (Yang et al., 2000; Laj et al., 2002) that permits us to import the 14C, K/Ar, and historical absolute ages of ABSINT’s samples to the Antarctic margin.
We can’t read the paper, but husband says : “geomagnetic paleointensity” is mostly about time; wobble of the Earth; the cycles.