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Neutron tomography for understanding the evolution of life

Hammarlund, E. LU ; Schillinger, Burkhard and Calzada, Elbio (2008) 8th World Conference on Neutron Radiography, WCNR-8 In 8th World Conference on Neutron Radiography, WCNR-8 p.448-451
Abstract

Most organisms that ever lived on Earth lacked skeletons and have therefore escaped preservation in the geological record. This fact makes it hard to accurately trace the evolution of multicellular organisms and the tree of life. However a handful faunas did get exceptionally well-preserved, including their soft-bodied members, just when complex lifeforms diverged 550 million years ago. Geochemical analyses of rock surrounding the fossils reveal some of the sea chemistry that prevailed at the time, information then used to simulate this specific type of fossil preservation. Fragile samples of soft tissue and clay have been fixated at different stages of decomposition and inspected via cold neutron tomography. First measurements have... (More)

Most organisms that ever lived on Earth lacked skeletons and have therefore escaped preservation in the geological record. This fact makes it hard to accurately trace the evolution of multicellular organisms and the tree of life. However a handful faunas did get exceptionally well-preserved, including their soft-bodied members, just when complex lifeforms diverged 550 million years ago. Geochemical analyses of rock surrounding the fossils reveal some of the sea chemistry that prevailed at the time, information then used to simulate this specific type of fossil preservation. Fragile samples of soft tissue and clay have been fixated at different stages of decomposition and inspected via cold neutron tomography. First measurements have rendered visualizations where different types of tissue, and internal structures, can be distinguished. Further exploration is necessary but results so far indicate that neutron radiography can be a non-destructive mean for monitoring geobiological processes.

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author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
8th World Conference on Neutron Radiography, WCNR-8
editor
Arif, Muhammad; Downing, R. Gregory; and
pages
4 pages
conference name
8th World Conference on Neutron Radiography, WCNR-8
external identifiers
  • scopus:70349336413
ISBN
9781932078749
language
English
LU publication?
no
id
b61dbf08-aef0-4c72-a04c-dfb655797957
date added to LUP
2017-05-17 11:28:01
date last changed
2017-08-09 14:54:24
@inproceedings{b61dbf08-aef0-4c72-a04c-dfb655797957,
  abstract     = {<p>Most organisms that ever lived on Earth lacked skeletons and have therefore escaped preservation in the geological record. This fact makes it hard to accurately trace the evolution of multicellular organisms and the tree of life. However a handful faunas did get exceptionally well-preserved, including their soft-bodied members, just when complex lifeforms diverged 550 million years ago. Geochemical analyses of rock surrounding the fossils reveal some of the sea chemistry that prevailed at the time, information then used to simulate this specific type of fossil preservation. Fragile samples of soft tissue and clay have been fixated at different stages of decomposition and inspected via cold neutron tomography. First measurements have rendered visualizations where different types of tissue, and internal structures, can be distinguished. Further exploration is necessary but results so far indicate that neutron radiography can be a non-destructive mean for monitoring geobiological processes.</p>},
  author       = {Hammarlund, E. and Schillinger, Burkhard and Calzada, Elbio},
  booktitle    = {8th World Conference on Neutron Radiography, WCNR-8},
  editor       = {Arif, Muhammad and Downing, R. Gregory},
  isbn         = {9781932078749},
  language     = {eng},
  pages        = {448--451},
  title        = {Neutron tomography for understanding the evolution of life},
  year         = {2008},
}