Sed.Structure Key - Horizontal stratification...

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Unformatted text preview: Horizontal stratification Cross-bedding Ripple marks 1 Name—@j/O—O'L Day/Time_____ Procedure——Identify and Sketch each sedimentary structure in the box on the left—hand side of the worksheet using the common name and then answer the questions on the right-hand side of the worksheet. GEOL 1602: Sedimentary Structures Marine Nonmarine What environmental condition(s) within the sediment would exclude burrowing organisms and allow horizontal stratification to be preserved? @mwox‘xm _ +\owozims& P%Q\WQ*A‘\DV"TDWS @ flow-t: HLO Marine Nonmarine 1H‘TIEE' H The arrow on this sample indicates right-side up. Draw an arrow on your sketch indicating the current direction. Marine Nonmarine @ Are thes'r asymmetrical ripple marks? Draw an arrow on your sketch indicating the current direction. Z“. 3490 (2.. 560 Ripple marks 2 Mudcracks Graded bedding Marine Nonmarine Are these symmetrical or @flpple marks? Draw an arrow on your sketch indicating the current direction. Marine Nonmarine What do mudcracks suggest about conditions Within the depositional environment? Mt ~~T“ Afj \ ~ 50% Wsk‘ EXPOSVAC Marine Nonmarine The arrow on this sample indicates right~side up. What type of event would cause the coarser sediments (pebbles) in this feature to be deposited first and then finer sediments (sand) to be deposited later? Sci—brms l"(i €fi° Low) €— l l i I i x l Vertical trace fossil Horizontal trace fossil at, Under What environmental conditions (high or low energy) was this traced produced? Marine Nonmarine Under What environmental conditions (high or low energy) was this traced produced? L/WD — WVWJQC‘Q +\V:AQ_, +0 C/Kyp Mat W VXJL\ M affine. 03m 34m ...
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  • Fall '09
  • YANN

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