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.

Delaware, Sand, Sands, Astrogeology, Particle physics

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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.

Strike-slip faults (Geology), Strike-slip faults, Earth movements, Earth movements (Geology), Tectonics, Tectonics (Geology)

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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.

New Mexico, Alps, Gravitational collapse, Orogeny

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