Download Quantitative Geology of Late Jurassic Epicontinental by Reinhart A. Gygi PDF

By Reinhart A. Gygi

ISBN-10: 3034801351

ISBN-13: 9783034801355

ISBN-10: 303480136X

ISBN-13: 9783034801362

The publication summarizes approximately forty years of the author’s examine on sedimentary geology in an epicontinental (shelf) sea in the course of the past due Jurassic in northern Switzerland. It provides a synopsis of the interaction of various paleoclimate, of sea point diversifications, of various water intensity, of sea flooring topography, of vertical and lateral facies alterations, of techniques of sedimentation like aggradation and progradation, of compaction, of the nice nearby transformations in charges of sedimentation and in isostatic equilibration of the lithosphere lower than load, and of concomitant synsedimentary tectonics. local version in isostatic adjustment of the lithosphere to the expanding load of sediments is analyzed through time correlations in keeping with a close biochronology of ammonites together with mineral stratigraphy utilizing the relatively strong clay mineral kaolinite, and with series stratigraphy.

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Quantitative Geology of Late Jurassic Epicontinental Sediments in the Jura Mountains of Switzerland

The publication summarizes approximately forty years of the author’s examine on sedimentary geology in an epicontinental (shelf) sea in the course of the past due Jurassic in northern Switzerland. It provides a synopsis of the interaction of various paleoclimate, of sea point adaptations, of various water intensity, of sea flooring topography, of vertical and lateral facies adjustments, of procedures of sedimentation like aggradation and progradation, of compaction, of the good nearby adjustments in premiums of sedimentation and in isostatic equilibration of the lithosphere lower than load, and of concomitant synsedimentary tectonics.

Extra resources for Quantitative Geology of Late Jurassic Epicontinental Sediments in the Jura Mountains of Switzerland

Example text

The Effingen Member is a mixture of on average about 60% lime mud and of 40% of clay minerals and some silt of mainly detrital quartz. The Effingen Member includes much more CaCO3 than the entire volume of the coeval carbonate platform of the G€unsberg Formation, from where calcareous mud spilled into deeper water. This is evidence that most of the lime mud in the Effingen Member was produced in the peritidal environment landward of the G€unsberg Formation, where the lower Vellerat Formation with the Vorbourg and the R€oschenz Member was sedimented.

The well-delimited accretion bands in the skeletal part of the thickly-branching coral colony of Cryptocoenia limbata GOLDFUSS from the St-Ursanne Formation which is represented in Fig. 1 are interpreted to be bands of annual accretion, because their average thickness of somewhat less than 5 mm is regular and close to the average thickness of 4 mm of the accretion bands in the cross-cut, Recent specimen of the massive brain coral from “Grid Reef” in the lagoon of Bermuda. The coral reefs of Bermuda are growing in a climatic zone where the difference between air temperature in the summer and occassionally below freezing in the winter is pronounced.

A photograph of Chestel Member near St-Ursanne is Fig. 19B in the present study. The member is at that locality massive calcareous oolite with only one parting in its upper part. The time equivalent of the micritic, well-bedded Letzi Member in the upper Villigen Formation in Canton Aargau is in northwestern Switzerland the Verena Member in the upper part of the carbonate platform of the Balsthal Formation. The Verena Member is massive calcareous oolite in most places, like for instance in the rock of Rouge Pertuis north of the village of Undervelier in Canton Jura.

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Quantitative Geology of Late Jurassic Epicontinental Sediments in the Jura Mountains of Switzerland by Reinhart A. Gygi


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