Spherule layers- records of ancient impacts
Article Abstract:
The large extraterrestrial object striking Earth at cosmic velocity melts and vaporizes silicate materials, which can condense into highly spheroidal, sand size particles that get deposited hundreds to thousands of kilometers form the point of impact. The spherules and spherule layers are and the processes that create them, then speculate about what might be learned through wider identification of and more extensive study of impact spherule layers is reviewed.
Publication Name: Annual Review of Earth and Planetary Science
Subject: Earth sciences
ISSN: 0084-6597
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
The North Anatolian fault: A new look
Article Abstract:
The Northern Anatolian Fault (NAF) is a strike slip fault zone that is formed by progressive strain localization in northern Turkey along an interface juxtaposing subduction-accretion material to its south and older and stiffer continental basement to its north. The fault zone is a very distinct morphological expression and is seismically active.
Publication Name: Annual Review of Earth and Planetary Science
Subject: Earth sciences
ISSN: 0084-6597
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Are the Alps collapsing?
Article Abstract:
The Orogenic collapse is a process that transfers gravitational potential energy from regions of high potential energy to regions of lower potential energy. The Western Alps is the only area where extension and shortening radical to orogen trend occur together and where organic collapse is an important process.
Publication Name: Annual Review of Earth and Planetary Science
Subject: Earth sciences
ISSN: 0084-6597
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Strain variations in an ancient accretionary complex: implications for forearc evolution. Central Costa Rica deformed belt: Kinematics of diffuse faulting across the western Panama block
- Abstracts: Numerical reconstruction of a soft-bedded Laurentide ice sheet during the last glacial maximum: comment. New constraints on the limits of the Barents-Kara ice sheet during the Last Glacial Maximum based on borehole stratigraphy from the Pechora Sea
- Abstracts: Herbivores and plant diversity. Neighborhood models of clonal growth in the white clover Trifolium repens. An analytical treatment of root-to-shoot ratio and plant competition for soil nutrient and light
- Abstracts: Distribution and tectonic setting of Ordovician K-bentonites in the United Kingdom
- Abstracts: The evolution of parental care in brooding spirorbid polychaetes: the effect of scaling constraints. Evolution of body size: varanid lizards as a model system