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Einsele, Gerhard; Herm, D; Schwarz, Hans Joachim (1974): Age determination of Holozene marine deposites from the western Mauritania (Table 1). PANGAEA, https://doi.org/10.1594/PANGAEA.509896, Supplement to: Einsele, G et al. (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

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Abstract:
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.
Coverage:
Median Latitude: 19.248333 * Median Longitude: -16.175000 * South-bound Latitude: 18.080000 * West-bound Longitude: -16.500000 * North-bound Latitude: 20.000000 * East-bound Longitude: -15.600000
Date/Time Start: 1971-04-28T00:00:00 * Date/Time End: 1971-04-28T00:00:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Event(s):
M25_L10 * Latitude: 19.460000 * Longitude: -16.300000 * Date/Time: 1971-04-28T00:00:00 * Location: Africa, Mauritania * Campaign: M25 * Basis: Meteor (1964) * Device: Profile sampling (PROFILE)
M25_L11 * Latitude: 19.470000 * Longitude: -16.320000 * Date/Time: 1971-04-28T00:00:00 * Location: Africa, Mauritania * Campaign: M25 * Basis: Meteor (1964) * Device: Profile sampling (PROFILE)
M25_L12 * Latitude: 19.530000 * Longitude: -16.280000 * Date/Time: 1971-04-28T00:00:00 * Location: Africa, Mauritania * Campaign: M25 * Basis: Meteor (1964) * Device: Profile sampling (PROFILE)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4DEPTH, sediment/rockDepthmGeocode
5Sample code/labelSample labelEinsele, Gerhard
6Age, datedAge datedkaEinsele, GerhardAge, 14C conventional
7Age, dated standard deviationAge dated std dev±Einsele, Gerhard
8δ13Cδ13C‰ PDBEinsele, GerhardIsotope ratio mass spectrometry
9δ18Oδ18OEinsele, GerhardIsotope ratio mass spectrometryRefer to Solnhofen limestone
10Age, commentCommEinsele, Gerhardtentative corrections to apply to the 14C dates yr
11Age, dated materialDated materialEinsele, Gerhard
12CommentCommentEinsele, Gerhard
Size:
148 data points

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