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Biogeosciences

Archives / 2015 / December

Insights into the ocean crust and deep biosphere – ECORD Summer School 2015

December 22, 2015
Insights into the ocean crust and deep biosphere – ECORD Summer School 2015
Some of the archived core halves examined during the European Consortium for Ocean Drilling (ECORD) summer school. (credit: Volker Diekamp).

Summer time as an early career geochemist can mean many things, to some it is vacation time, to others it is field season, and yet for others it is time to enroll in a summer school. ECORD, the European Consortium for Ocean Drilling, offers at least one summer school a year. If you work with foraminifera you may be familiar with the Urbino Summer School in Paleoclimatology, sorry to disappoint, bu ...[Read More]

The Panamanian Isthmus is not entirely guilty after all!

December 8, 2015
The Panamanian Isthmus is not entirely guilty after all!
Fieldwork in northwestern Colombia, in order to recognize the nature, structure and mineral composition of fluvial deposits accumulated during the middle Miocene. Within these sediments, detrital zircons of Panamanian affinity were commonly found and used to determine an earlier land connection between Central and South America (credit: Lina Pérez-Angel).

  “According to new research, the land bridge connecting Central and South America rose more than 10 million years earlier than originally thought”   Traditionally, closure of the Panama Isthmus has been deemed responsible for the co-occurrence of two major events: The large Pleistocene glaciations and the Great American Biotic Interchange (GABI). Existing evidence indicating a ca ...[Read More]