The Earth VSI
about
vsi
reading
llm
The Earth was very different a long time ago; microbes under the seafloor; paleomagnetism and reversals of magnetic field.
The Earth
See also post ages of the earth.
- India was 2000km away from current location when the dinosaurs were wiped out
- Continents move at about 5cm / yr, approximately the rate nails grow
- Sub-ocean floor life: Microbial Life Deep Under the Seafloor—A Story of Not Giving Up
- Living long beneath the sea
- Summarized by GPT: The document discusses microbes living beneath the seafloor, which may be millions of years old, potentially as old as the sediment that nourishes them. These organisms, studied by Hans Roy of Aarhus University and others, exist in a state of minimal metabolic activity, surviving on scarce nutrients and oxygen available in the clay sediment that settled on the ocean floor 86 million years ago. The scientists’ research, published in the journal Science, reveals that these microbes live in extremely low-oxygen environments and do not grow or multiply significantly, suggesting they could live for an exceptionally long time, possibly up to millions of years. This finding challenges conventional understandings of life and its energy requirements. The research also raises questions about the abundance of such slow-growing, long-lived bacteria on Earth and their implications for life’s presence in extreme conditions elsewhere in the universe.
- The earth is very, very old
- Change in magnetic field of earth caught in crystals.
- Sea floor mostly only 200M years old because it is being constantly regenerated.
- p114 Cameroon CO2 poisoning event
- paleomagnetism
-
The natural magnetism of rocks, induced by the earth’s magnetic field at the time of their formation; the branch of geophysics concerned with such magnetism, esp. as a means of determining the past nature of the earth’s magnetic field or the past relationship of rocks to each other.
Deets
- Martin Redfern
- Volume 90
- Published 2003