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  • 108-658A; 108-658B; Canarias Sea; DRILL; Drilling/drill rig; Joides Resolution; Leg108; Ocean Drilling Program; ODP  (1)
  • 175-1078C; Benguela Current, South Atlantic Ocean; Center for Marine Environmental Sciences; DRILL; Drilling/drill rig; Joides Resolution; Leg175; MARUM; Ocean Drilling Program; ODP
  • 175-1079A; 175-1084A; Benguela Current, South Atlantic Ocean; Center for Marine Environmental Sciences; Congo Fan; DRILL; Drilling/drill rig; GeoB6518-1; Gravity corer (Kiel type); Joides Resolution; Leg175; M47/3; MARUM; Meteor (1986); Ocean Drilling Program; ODP; SL
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  • 1
    facet.materialart.
    Unknown
    Distribution of pollen and spores in sediments of ODP Hole 175-1078C (2009)
    PANGAEA
    In:  Supplement to: Dupont, Lydie M; Behling, Hermann (2006): Land-sea linkages during deglaciation: high resolution records from the eastern Atlantic off the coast of Namibia and Angola (ODP Site 1078). Quaternary International, 148(1), 19-28, https://doi.org/10.1016/j.quaint.2005.11.004
    Details
    Publication Date: 2024-01-09
    Description: The distribution of pollen in marine sediments is used to record vegetation change on the continent. Generally, a good latitudinal correspondence exists between the distribution patterns of pollen in the marine surface sediments and the occurrence of the source plants on the adjacent continent. To investigate land–sea interactions during deglaciation, we compare proxies for continental (pollen assemblages) and marine conditions (alkenone-derived sea surface temperatures) of two high-resolution, radiocarbon-dated sedimentary records from the tropical southeast Atlantic. The southern site is located West of the Cunene River mouth; the northern site is located West of the Angolan Huambe Mountains. It is inferred that the vegetation in Angola developed from Afroalpine and open savannah during the last Glacial maximum (LGM) via Afromontane Podocarpus forest during Heinrich Event 1 (H1), to an early increase of lowland forest after 14.5 ka. The vegetation record indicates dry and cold conditions during the LGM, cool and wet conditions during H1 and a gradual rise in temperature starting well before the Younger Dryas (YD) period. Terrestrial and oceanic climate developments seem largely running parallel, in contrast to the situation ca. 5° further South, where marine and terrestrial developments diverge during the YD. The cool and wet conditions in tropical West Africa, South of the equator, during H1 suggest that low-latitude insolation variation is more important than the slowdown of the thermohaline circulation for the climate in tropical Africa.
    Keywords: 175-1078C; Benguela Current, South Atlantic Ocean; Center for Marine Environmental Sciences; DRILL; Drilling/drill rig; Joides Resolution; Leg175; MARUM; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    The late Pliocene pollen record of ODP Site 108-658 off Cape Blanc, Atlantic Ocean (1994)
    PANGAEA
    In:  Supplement to: Leroy, Suzanne A G; Dupont, Lydie M (1994): Development of vegetation and continental aridity in northwestern Africa during the Late Pliocene: the pollen record of ODP 658. Palaeogeography, Palaeoclimatology, Palaeoecology, 109(2-4), 295-316, https://doi.org/10.1016/0031-0182(94)90181-3
    Details
    Publication Date: 2024-01-09
    Description: A 200 m long marine pollen record from ODP Site 658 (21°N, 19°W) reveals cyclic fluctuations in vegetation and continental climate in northwestern Africa from 3.7 to 1.7 Ma. These cycles parallel oxygen isotope stages. Prior to 3.5 Ma, the distribution of tropical forests and mangrove swamps reached Cape Blanc, 5°N of the present distribution. Between 3.5 and 2.6 Ma, forests occurred at this latitude during irregular intervals and nearly disappeared afterwards. Likewise, a Saharan paleoriver flowed continuously until isotope Stage 134 (3.35 Ma). When river discharge ceased, wind transport of pollen grains prevailed over fluvial transport. Pollen indicators of trade winds gradually increased between 3.3 and 2.5 Ma. A strong aridification of the climate of northwestern Africa occurred during isotope Stage 130 (3.26 Ma). Afterwards, humid conditions reestablised followed by another aridification around 2.7 Ma. Repetitive latitudinal shifts of vegetation zones ranging from wooded savanna to desert flora dominated for the first time between between 2.6 and 2.4 Ma as a response to the glacial stages 104, 100 and 98. Although climatic conditions, recorded in the Pliocene, were not as dry as those of the middle and Late Pleistocene, latitudinal vegetation shifts near the end of the Pliocene resembled those of the interglacial-glacial cycles of the Brunhes chron.
    Keywords: 108-658A; 108-658B; Canarias Sea; DRILL; Drilling/drill rig; Joides Resolution; Leg108; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    Pollen analysis of sediment cores from the mouth of the river Congo to Walvis Bay and Lüderitz (2007)
    PANGAEA
    In:  Supplement to: Dupont, Lydie M; Behling, Hermann; Jahns, Susanne; Marret, Fabienne; Kim, Jung-Hyun (2007): Variability in glacial and Holocene marine pollen records offshore from west southern Africa. Vegetation History and Archaeobotany, 16, 87-100, https://doi.org/10.1007/s00334-006-0080-8
    Details
    Publication Date: 2024-02-02
    Description: The distribution of pollen in marine sediments is used to record vegetation changes over the past 30,000 years on the adjacent continent. A transect of marine pollen sequences from the mouth of the river Congo (~5°S) to Walvis Bay and Lüderitz (~25°S) shows vegetation changes in Congo, Angola and Namibia from the last glacial period into the Holocene. The comparison of pollen records from different latitudes provides information about the latitudinal shift of open forest and savannahs (Poaceae pollen), the extension of lowland forest (rain forest pollen) and Afromontane forest (Podocarpus pollen), and the position of the desert fringe (pollen of Caryophyllaceae, Chenopodiaceae and Amaranthaceae). High Cyperaceae pollen percentages in sediments from the last glacial period off the mouth of the river Congo suggest the presence of open swamps rather than savannah vegetation in the Congo Basin. Pollen from Restionaceae in combination with Stoebe-type pollen (probably from Elytropappus) indicates a possible northwards extension of winter rain vegetation during the last glacial period. The record of Rhizophora (mangrove) pollen is linked to erosion of the continental shelf and sea-level rise. Pollen influx is highest off river mouths (10-2000 grains year**-1 cm**-2), close to the coast (300-6000 grains year**-1 cm**-2), but is an order of magnitude lower at sites situated far from the continent (〈10 grains year**-1 cm**-2).
    Keywords: 175-1079A; 175-1084A; Benguela Current, South Atlantic Ocean; Center for Marine Environmental Sciences; Congo Fan; DRILL; Drilling/drill rig; GeoB6518-1; Gravity corer (Kiel type); Joides Resolution; Leg175; M47/3; MARUM; Meteor (1986); Ocean Drilling Program; ODP; SL
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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