AMS radiocarbon dates and pollen analysis of ODP Hole 175-1078C


Autoria(s): Dupont, Lydie M; Behling, Hermann; Kim, Jung-Hyun
Cobertura

LATITUDE: -11.920770 * LONGITUDE: 13.400250 * DATE/TIME START: 1997-09-03T18:10:00 * DATE/TIME END: 1997-09-04T06:05:00

Data(s)

26/07/2008

Resumo

ODP Site 1078 situated under the coast of Angola provides the first record of the vegetation history for Angola. The upper 11 m of the core covers the past 30 thousand years, which has been analysed palynologically in decadal to centennial resolution. Alkenone sea surface temperature estimates were analysed in centennial resolution. We studied sea surface temperatures and vegetation development during full glacial, deglacial, and interglacial conditions. During the glacial the vegetation in Angola was very open consisting of grass and heath lands, deserts and semi-deserts, which suggests a cool and dry climate. A change to warmer and more humid conditions is indicated by forest expansion starting in step with the earliest temperature rise in Antarctica, 22 thousand years ago. We infer that around the period of Heinrich Event 1, a northward excursion of the Angola Benguela Front and the Congo Air Boundary resulted in cool sea surface temperatures but rain forest remained present in the northern lowlands of Angola. Rain forest and dry forest area increase 15 thousand years ago. During the Holocene, dry forests and Miombo woodlands expanded. Also in Angola globally recognised climate changes at 8 thousand and 4 thousand years ago had an impact on the vegetation. During the past 2 thousand years, savannah vegetation became dominant.

Formato

application/zip, 3 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.726887

doi:10.1594/PANGAEA.726887

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Dupont, Lydie M; Behling, Hermann; Kim, Jung-Hyun (2008): Thirty thousand years of vegetation development and climate change in Angola (Ocean Drilling Program Site 1078). Climate of the Past, 4, 107-124, doi:10.5194/cp-4-107-2008

Palavras-Chave #175-1078C; Abu; Abutilon; Aca; Acacia; Acalypha; Acanteae; Acanthaceae; Adansonia; Adansonia digitata; Adenia; Adenium; Aeschynom; Aeschynomene; Afraegle; Afraegle paniculata; Afrormos; Afrormosia; Afzelia; Age, 14C AMS; Age, calibrated; Age, dated; Age, dated, error to older; Age, dated, error to younger; Age, dated material; Age, maximum/old; Age, minimum/young; Age dated; Age e -; Age e +; Age max; Age min; Age model; Age model calibration; Aizoaceae; Aizoeae; Alchornea; Ali.p-a; Alisma plantago-aquatica; Allophyl; Allophylus; Aloe-T; Aloe-type; Amaranthaceae/Chenopodiaceae; Anemia-T; Anemia-type; Annona; Annonaceae; Anthoceros; Anthosp; Anthospermum; Antidesma; Antidesma-type; Antide-T; Aos; Apiaceae; Apiae; Aporr; Aporrhiza; Ara-T; Arecaceae; Arecaceae fver; Arecceae; AsteLigu; AsteTubu; AsteVern; Atractylis-type; Avicenni; Avicennia; Balanite; Balanites; Baphia-T; Baphia-type; Barleria; Bauhinia-T; Bauhinia-type; Benguela Current, South Atlantic Ocean; Berlin-T; Ble; Blechnum; Blephari; Blepharis; Blighia-type; Blighi-T; Boerhavi; Boerhavia; Bombax; Borass-T; Borassus-type; Borreria; Boscia-T; Boscia-type; Bosqueia; Boswelli; Boswellia; Bot; Botryococcus; Braae; Brachyst; Brachystegia; Brassicaceae; Bridelia; Burkea; Butyrosp; Butyrospermum; Bux-T madagasc; Buxus-type madagascaria; C. cordifolia; C. mopane; C.niti-T; Cadaba; Cag; calibrated age range; Calligonum; Calycobolus/Evolvulus-type; Calycobolus-type; Calyc-T; Camae; Campanulaceae; Canarium; Canthium; Cap; Capparis; Cardio; Cardiospermum; Caryophyllaceae; Cassia-T; Cassia-type; Ceiba pen; Ceiba pentandra; Cel; Cela/Hipp; Celastraceae/Hippocrateaceae; Celtis; Cep; Cephalaria; Chen/Amar; Chionanthus; Chionanthus-type; Chrozophora; Chrysophyllum; Chz; Cissus; Citrullu; Citrullus; Clematis-type; Cleome; Clm-T; Cnestis-type; Cnesti-T; Coccinia; Cocos; Cocos nucifera; Coffea-T; Coffea-type; Cola cordifolia; Cola nitida-type; Colophospermum mopane; Comb/Mela; Combretaceae/Melastomataceae; Commelina; Commelina-T; Commelina-type; Comment; Commipho; Commiphora; Compositae Liguliflorae; Compositae Tubuliflorae; Compositae Vernonieae; Convolvu; Convolvulus (Africa); Convolvulus-type; Corchoru; Corchorus; Cordia; Counting, palynology; Cphae; Crossopt; Crossopteryx; Crotalar; Crotalaria; Croton-T; Croton-type; Cussonia; Cuviera; Cyathea; Cypae; Cyperaceae; Daisy-T; Daisy-type; Dalbergia; Daniellia-type; Daniel-T; Dated material; Depth; DEPTH, sediment/rock; Detarium; Dialium-type; Dialiu-T; Diospyro; Diospyros; Dod.v; Dodonaea viscosa; Dombeya; Dombeya-T; Dombeya-type; Dracaena; DRILL; Drilling/drill rig; Dro; Drosera; Duparque; Duparquetia; Duparquetia orchidacea; Elaeguin; Elaeis guineensis; Entada-T; Entada-type; Erica; Erica (Africa); Erythrina; Eugenia; Eup; Euphceae.ud; Euphorbia; Euphorbiaceae undifferentiated; Fadogia-T; Fadogia-type; Flacourt; Flacourtia; Funtumia; Gaertner; Gaertnera; Gal; Galium; Garcinia; Gardenia; Gazania-T; Gazania-type; Gentiana; Gentianaceae (Africa); Gentianaceae undifferentiated; Ger; Geranium; Gomphrena-type; Gomphr-T; Graae; Gramineae; Grewia; Helio; Heliotropium; Hermannia; Holopte; Holoptelea grandis; Hugonia; Hygrophila-type; Hygrop-T; Hymenoca; Hymenocardia; Hyph; Hyphaene; Hypoes-T; Hypoestes type; Hyptis; Ilex cf. I. mitis; Ilexmiti; Indet; Indeterminata/varia; Indigofera-type; Indigo-T; Iodes; Ipomoea-T; Ipomoea-type; Irvingia; Isoberlinia-type; Ixora; Jam; Jasminum; Jasminum/Schrebera; Joides Resolution; Just/Mone; Justicia/Monechma; Kalanch; Kalanchoe; Kedrosti; Kedrostis; Khaya; Kigelia-T; Kigelia-type; Klainean; Klaineanthus; Kohautia; Label; labor number, Leibniz-Labor Kiel, Germany; Lannea; Lannea-type; Leea; Leg175; Leonotis; Lilae; Liliaceae; Lophira; Lud; Ludwigia; Luffa; Lycopodi; Lycopodium (Africa); Macaranga; Maerua-T; Maerua-type; Maesa; Maesa lanceolata-type; Mallotus; Mallotus-type; Malvacea; Malvaceae (Africa); Manilkar; Manilkara; Mark add; Marker, added; Marker, found; Mark found; Martreti; Martretia; Maytenus; Meliaceae; Meliceae; Melochia; Merremia; Mezoneuron-type; Mezon-T; Mimopigr; Mimosa pigra; monolete; Monopeta; Monopetalanthus; Monopetalanthus-type; Moraceae; Morae; Morinda; Mussaend; Mussaenda; Myo; Myr; Myrica; Myriophyllum; Myrsine; Myrsine africana; Nauc/Mitr; Nauclea/Mitragyna; Nauclea-type; Neurada/Grielum; Neurada-type; Neurceae; Nit; Nitraria; Nyctaginaceae; Nyctaginaceae undifferentiated; Nyctceae; Nym; Nymphaea; Ocean Drilling Program; Ochna/Ochnaceae undifferentiated; Ochnaceae.ud; Ochnaceae undifferentiated; Oci; Ocimum; ODP; ODP sample designation; Olax; Ole; Olea; Olea capensis; Oleahoch; Oph; Ophioglossum; Ormocarp; Ormocarpum; Osmu; Osmunda; Oxyg; Oxygonum; Pandanus; Papilion; Papilionoideae; Paramacr; Paramacrolobium; Parinari; Parkinso; Parkinsonia; Pavonia-T; Pavonia-type; Pdi; Pediastrum; Pelargon; Pelargonium; Pentacle; Pentaclethra; Pentas; Pentzia-T; Pentzia-type; Pes; Petalidi; Petalidium; Phaeoc; Phaeoceros; Phoenix; Phyla nod-T; Phyla-type nodiflora; Phyllant; Phyllanthus; Piliosti; Piliostigma; Pla; Plantago; Plicosepalus; Poa-T; Pocae; Pod; Podocarpus; Pollen tot; Pollen total; Polygala-type; Polygonum senegalense-type; Polypodiaceae; Polyse-T; Potamoge; Potamogeton (Africa); Protea; Pseudoc; Pseudocedrela; Pseudopr; Pseudoprosopis; Psychotr; Psychotria; Psydrax subc; Psydrax-type subcordata; Ptd; Pteridium; Pteris; Pterocar; Pterocarpus; Pycnanth; Pycnanthus; Pycnanthus angolensis-type; Raphia; Restceae; Restionaceae; Rhamnaceae.ud; Rhamnaceae undifferentiated; Rhiz; Rhizophora; Rhus-type; Rhu-T; Rhynchosia-type; Rhynch-T; Rothmann; Rothmannia; Rothmannia (Frax/Olea-type); Rubea.m; Rubiaceae monade; Rubiaceae tetrade; Rubtetra; Rytigyni; Rytigynia; Sabicea; Sal; Salix; Salix cf. Salix chevalieri; Salvador; Salvadora persica; Salvinia; Sample code/label; Sample ID; Sauvages; Sauvagesia; Scheffl; Schefflera; Sclerocarya-type birrea; Scleroc birr-T; Scrophul; Scrophulariaceae (Africa); Securine; Securinega; Sesbania-type; Sesban-T; Sherbour; Sherbournea; Slv; Solanum-T; Solanum-type; Sorindeia-type; Sori-T; Spathode; Spathodea; Spo; Spores; Spores, monolete; Spores, trilete; Spores, trilete echinate; Spores, trilete reticulate; Spores, trilete verrucate; Sterculia-type; Stercu-T; Stereosp; Stereospermum; Stipular; Stipularia africana; Stoebe-T; Stoebe-type; Strychno; Strychnos; Swe; Swertia; Symphoni; Symphonia globulifera; synonymous with Pericopsis; synonymous with Spermacoce-type; Syz-T; Syzygium-type; Tama/Cryp; Tamarindus/Cryptosepalum; Tapinant; Tapinanthus; Tarchonanthus/Artemisia-type; Tarch-T; Tarenna; Teclea-T; Teclea-type; Tephrosi; Tephrosia; Tess; Tessmannia; Tetraploa aristata conidia; Tetraris; Tetrorch; Tetrorchidium; Thyae; Thymelaeaceae; Triaspis-T; Triaspis-type; Tribulus; Trichili; Trichilia; trilechi; trilete spores; trilreti; trilverr; Tus; Typ.a-T; Typ.l; Typha angustifolia-type; Typha latifolia; Uapaca; Urtae; Urticaceae; Utricula; Utricularia (Africa); Varia; Vigna; Virectar; Virectaria; Vol; Volume; Walafrida; Welwitsc; Welwitschia; Xyriceae; Xyridaceae; Zanthoxy; Zanthoxylum; Zyg; Zygnema-type; Zygophyllum; Zyg-T
Tipo

Dataset