caa a22 4500 467934088 CHVBK 20180406152951.0 cr unu---uuuuu 170328e20061101xx s 000 0 eng 10.1007/s10347-006-0049-1 doi (NATIONALLICENCE)springer-10.1007/s10347-006-0049-1 Extremely distal fluvial sandstone within the playa system of Arnstadt Formation (Norian, Late Triassic), Central Germany [Elektronische Daten] [U. K. Shukla, G. H. Bachmann, G. Beutler, J. Barnasch, M. Franz] The Wachsenburg Sandstone of Thuringia (Central Germany) occurs within playa deposits of the Arnstadt Formation (Late Triassic, Norian) and furnishes an example of ephemeral river metamorphosis under dryland conditions. Characterized by high flow regime features, the sand-dominated lithofacies constitution exhibits sedimentation by channel processes under the influence of recurring flash floods. Bearing signatures of subaerial exposures, the fining-upward lithofacies cycles are bound by low-angle lateral accretion elements suggesting deposition in a meandering stream. Channel migration in response to point bar expansion and active bank erosion, led to the development of four laterally shifting point bar events. Unimodal palaeocurrent patterns with low variance and azimuthal dispersion support the point bar origin of the Wachsenburg Sandstone. With reduced water budget under largely semi-arid climate, the river progressively became smaller, highly sinuous and ultimately abandoned. The resulting point bar succession was finally covered with sheet flow deposits of over bank origin. The sandstone was deposited during a period of low base-level when the playa system temporarily fell dry. Springer-Verlag, 2006 Ephemeral river nationallicence Meandering river nationallicence Flash flood nationallicence Playa system nationallicence Triassic (Norian) nationallicence Germany nationallicence Shukla U. K. Department of Geology, Banaras Hindu University, 221005, Varanasi, India aut Bachmann G. H. Institut für Geologische Wissenschaften, Martin-Luther-Universität, 06099, Halle (Saale), Germany aut Beutler G. Institut für Geologische Wissenschaften, Martin-Luther-Universität, 06099, Halle (Saale), Germany aut Barnasch J. Institut für Geologische Wissenschaften, Martin-Luther-Universität, 06099, Halle (Saale), Germany aut Franz M. Institut für Geologische Wissenschaften, Martin-Luther-Universität, 06099, Halle (Saale), Germany aut Facies Springer-Verlag 52/4(2006-11-01), 541-554 0172-9179 52:4<541 2006 52 10347 https://doi.org/10.1007/s10347-006-0049-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10347-006-0049-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shukla U. K. Department of Geology, Banaras Hindu University, 221005, Varanasi, India aut NATIONALLICENCE 700 1- Bachmann G. H. Institut für Geologische Wissenschaften, Martin-Luther-Universität, 06099, Halle (Saale), Germany aut NATIONALLICENCE 700 1- Beutler G. Institut für Geologische Wissenschaften, Martin-Luther-Universität, 06099, Halle (Saale), Germany aut NATIONALLICENCE 700 1- Barnasch J. Institut für Geologische Wissenschaften, Martin-Luther-Universität, 06099, Halle (Saale), Germany aut NATIONALLICENCE 700 1- Franz M. Institut für Geologische Wissenschaften, Martin-Luther-Universität, 06099, Halle (Saale), Germany aut NATIONALLICENCE 773 0- Facies Springer-Verlag 52/4(2006-11-01), 541-554 0172-9179 52:4<541 2006 52 10347 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer