| Autor: |
J R, Delaney, D S, Kelley, M D, Lilley, D A, Butterfield, J A, Baross, W S, Wilcock, R W, Embley, M, Summit |
| Rok vydání: |
2001 |
| Předmět: |
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| Zdroj: |
Science (New York, N.Y.). 281 |
| ISSN: |
0036-8075 |
| Popis: |
Seafloor diking-eruptive events represent the irreducible, quantum events of upper oceanic crustal accretion. They record events by which a large portion of the oceanic crust has formed through geological history. Since 1993, the U.S. Navy's real-time Sound Surveillance System has allowed location of ongoing acoustic signatures of dike emplacement and basalt eruptions at ridge crests in the northeast Pacific. These diking-eruptive events trigger a sequence of related, rapidly evolving physical, chemical, and biological processes. Magmatic volatiles released during these events may provide nutrients for communities of subsea-floor microorganisms, some of which thrive in high-temperature anaerobic environments. Many of the organisms identified from these systems are Archaea. If microorganisms can thrive in the water-saturated pores and cracks within deep, volcanically active portions of our planet, other hydrothermally active planets may harbor similar life forms. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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