Tidal flat, Schillig, North Sea
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Location:
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Tidal flat | Macro |
Location | Schillig shoreline, ca. |
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20 km north of Wilhelmshafen, |
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North Sea coast, Lower Saxony, Germany |
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Depositional facies | Tidal flat |
Provenance |
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This sand |
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has, like most sands in the North |
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and the Baltic Sea, a long story. |
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Abtragungsprodukte des skandinavischen Schildes (quarzreiche plutonische und metamorphe Gesteine) und
der Mitteleuropas wurden während des Tertiärs in Norddeutschen Stränden gesammelt und aufgearbeitet,
von quartärer Vereisung bedeckt, deformiert und recycelt, in periglazialen Flußläufen und Dünenfeldern
gesammelt, und bei der Flutung der Nor- und Ostsee wiederum in Strände und assoziierte Dünen
inkorporiert.
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Composition:
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Weathering products from the Scandinavian Shield (mostly quarz-rich plutonic and metamorphic rocks) and from the the complex Mesozoic and Paleozoic geology of Central Europe were concentrated and reworked at sandy shorelines throughout the Paleogene and Neogene in northern Germany. They were covered by Quaternary glaciers, collected in periglacial streams and dune fields, and concentrated again in Holocene shorelines and dune fields during postglacial sea level rise. Many sand grains here may find themselves for the fourth or fifth time on a beach! | |
Composition | Almost pure quartz |
Texture | Medium grained, well rounded, moderately sorted. |
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The high degree of textural maturity may be surprising for |
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this middle to low energetic tidal sand flat |
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but may be explained by the close relationship to eolian dunes. Also, the sample might be contaminated with sand from artificially nourished beaches. |
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Petrographic thin section:
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Description | insert here short description of thin section |
insert here a bright field image |
| insert here a dark field image |
Bright field | Dark field |
Sample number | heubeck0132 |
Collector | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin |
Date of sampling | 2001 |
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Comments:
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_replace this text with additional comments _
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