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[in-ter-fing-ger] /ˌɪn tərˈfɪŋ gər/
verb (used without object), Geology
(of sedimentary rocks) to change laterally from one type to another in a zone where the two types form interpenetrating wedges.
1970-75; inter- + finger Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for interfinger
  • Both members interfinger to the east into an eastward-thickening sequence of siltier and sandier rocks.
  • Members may interfinger and may be locally unconformable.
  • Some of the units interfinger and some are lateral equivalents of each other.
  • Some rock units interfinger, whereas other units are considered lateral equivalents of one another.
  • The fan deposits coalesce or interfinger with lake and alluvial deposits.
  • The bay muds thin out to the west and interfinger with the yellow clays.
  • These rocks serve as a recharge zone and interfinger with valley sediments.
  • These sediments also underlie and interfinger with the fine-grained facies and unconformably overlie the bedrock.
  • Horizontal lenses of well sorted silts and sands occasionally interfinger the clays and silty clays.
  • Thousands of feet of volcanic rocks piled up and flowed east and west to interfinger with different types of rock in those areas.

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