Understanding the geomagnetic field behavior in the past, and, in particular, its intensity component, has implications for various (and disparate) fields of research, including the physics of Earth’s interior, atmospheric and cosmologic sciences, biology, and archaeology.This study provides substantial data on variations in geomagnetic field intensity during the eighth to second centuries BCE Levant, thus significantly improving the existing record for this region.Earth’s magnetic field, one of the most enigmatic physical phenomena of the planet, is constantly changing on various time scales, from decades to millennia and longer.
It is located in the Institute of Earth Sciences "Jaume Almera", a building property of the CSIC in the University Area.It collaborates with numerous national research groups from the Universities of Barcelona, Autònoma de Barcelona, Zaragoza, Autónoma de Madrid, Complutense de Madrid, Granada, Madrid, Euskadi, Salamanca, Tarragona or Valencia, several research groups of the CSIC: CMIMA, IDAEA, Instituto Andaluz de Ciencias de la Tierra, National Museum of Natural Sciences, Institute of Natural products, researchers from the IGME or the Institute of Paleontology of Sabadell, and international researchers from the Universities of Utrecht, Geneve, Instituto Antártico Argentino, Coimbra, Michigan or Leoben.Biostratigraphy is the same as paleontologic stratigraphy, based on the fossil evidence in the rock layers.Another branch of stratigraphy is chronostratigraphy that studies absolute ages of rocks and sediments.In addition, the study provides further evidence of extremely strong field in the late eighth century BCE (“geomagnetic spike”), and of rapid rates of change (20% over three decades).
The improved Levantine record is an important basis for geophysical models (core−mantle interactions, cosmogenic processes, and more) as well as a reference for archaeomagnetic dating.
Deino continues his chief responsibility for software and automation engineering, which have helped make BGC’s argon laboratory the most productive in the world. K., and Hill, A., (in press), Precessional Forcing of Lacustrine Sedimentation in the late Cenozoic Chemeron Basin, Central Kenya Rift, and Calibration of the Gauss/Matuyama Boundary: Earth and Planetary Science Letters.
He joined the Institute of Human Origins (IHO) in 1985, and led the development effort that produced the world’s first fully automated Ar dating system in 1987.
These data are used to test and refine hypotheses regarding site formation, past environments, and human activities at Dmanisi.
One of the most important steps of the research at Dmanisi is to define the stratigraphy of the site.
carbon samples, soil samples, palynological samples etc.