Age determination of Holozene marine deposites from the western Mauritania (Table 1), supplement to: Einsele, Gerhard; Herm, D; Schwarz, Hans Joachim (1974): Holocene eustatic (?) sea level fluctuation at the coast of Mauritania. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C18, 43-62

DOI

In an area regarded to be very favourable for the study of Holocene sea level changes one or several eustatic (?) oscillations of sea have been found using sedimentological and ecological methods. After a maximum of +3 m during the Nouakchottian stage (= Middle Flandrian or Late Atlantic) about 5500 YBP a drop of sea to -3.5 ± 0.5 m about 4100 YBP is testified by stromatolitic algae indicating the former sea level within the tidal zone with high accuracy. This evidence is supported by the observation of post-Nouakchottian regressive and transgressive geologic sequences, by buried beach deposits and flooded hardgrounds, post-Nouakchottian marine terraces of different height and age, the cutting off of one large and several small bays from the open sea etc. Possibly, one or two smaller oscillations followed between 4000 and 1500 years B. P. The radiocarbon age of the marine shells dated may be partly somewhat too old or too young.

Identifier
DOI https://doi.org/10.1594/PANGAEA.509896
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.509896
Provenance
Creator Einsele, Gerhard; Herm, D; Schwarz, Hans Joachim
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 1974
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 148 data points
Discipline Earth System Research
Spatial Coverage (-16.500W, 18.080S, -15.600E, 20.000N); Africa, Mauritania