Elemental Distribution
Elemental distribution is unevenly spread through the organic remains, allowing the original nature of the remnant film to be predicted. For example:
- Silicon is more abundant in cuticular material
- Aluminium and potassium are higher in the eyes
- Calcium and phosphorus are generally associated with mid-gut glands, and aluminium is higher in the alimentary canal.
- Areas in which Silicon is depleted, and Al and K concentrations elevated, have been interpreted as originally-fluid-filled cavities.
Because the fossiliferous layer is so thin, it is effectively transparent to electrons at high (>15V) accelerating voltages.
Read more about this topic: Burgess Shale Type Preservation
Famous quotes containing the words elemental and/or distribution:
“Our bodies are shaped to bear children, and our lives are a working out of the processes of creation. All our ambitions and intelligence are beside that great elemental point.”
—Phyllis McGinley (1905–1978)
“Classical and romantic: private language of a family quarrel, a dead dispute over the distribution of emphasis between man and nature.”
—Cyril Connolly (1903–1974)