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Rock Formations May 3 2010
Description
The rock cycle reveals the fascinating geological processes that shape the surface of our planet. This explanation details the formation of igneous rocks from molten magma, sedimentary rocks from layers of material accumulated over vast periods of time, and metamorphic rocks, which are forged under conditions of extreme heat and pressure deep within the Earth.
Original title
היווצרות סלעים (3 במאי 2010)
מחזור הסלעים בטבע חושף את התהליכים הגיאולוגיים המרתקים שיוצרים את פני כדור הארץ. הסבר זה מפרט על היווצרותם של סלעי יסוד ממגמה רותחת, סלעי משקע משכבות של חומר שהצטבר לאורך זמן, וסלעים מטמורפיים (מותמרים) הנוצרים תחת תנאי לחץ וחום קיצוניים במעמקי האדמה.
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