lacustrine clay

См. также в других словарях:

• berg till — ˈbərgˌtil noun Etymology: berg (I) : lacustrine clay with boulders and other glacial debris dropped in it by melting icebergs …   Useful english dictionary

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• Jurassic Period — Interval of geologic time, 206–144 million years ago, that is one of the three major divisions of the Mesozoic Era, preceded by the Triassic Period and followed by the Cretaceous. During the Jurassic, Pangea began to break up into the present day …   Universalium

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• pre-Columbian civilizations — Introduction       the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …   Universalium