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Hötzel, Sebastian; Dupont, Lydie M; Marret, Fabienne; Jung, Gerlinde; Wefer, Gerold (2016): Dinoflagellate cyst counts of ODP Site 1081, Benguela Upwelling, Miocene-Pliocene [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.858185, Supplement to: Hötzel, S et al. (2016): Steps in the intensification of Benguela upwelling over the Walvis Ridge during Miocene and Pliocene. International Journal of Earth Sciences, 1-13, https://doi.org/10.1007/s00531-016-1309-0

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Abstract:
Using the Late Miocene to Pliocene organic-walled dinoflagellate cyst record of ODP Site 1081 we reconstruct and discuss the early upwelling history over the Walvis Ridge with a special focus on the movement of the Angola-Benguela Front (ABF). We suggest that during the Late Miocene the Angola Current flowed southwards over the Walvis Ridge more frequently than today because the ABF was probably located further south as a result of a weaker meridional temperature gradient. A possible strengthening of the meridional gradient during the latest Miocene to early Pliocene in combination with uplift of south-western Africa intensified the upwelling along the coast and increased the upwelling's filaments over the Walvis Ridge. An intermediate period from 6.2 to 5.5 Ma is shown by the dominance of Habibacysta tectata, cysts of a cool-tolerant dinoflagellate known from the northern Atlantic, indicating changing oceanic conditions contemporaneous with the Messinian Salinity Crisis. From 4.3 Ma on, the upwelling signal got stronger again and waters were well-mixed and nutrient-rich. Our results indicate a northward migration of the ABF as early as 7 Ma and the initial stepwise intensification of the BUS.
Project(s):
Coverage:
Latitude: -19.619690 * Longitude: 11.319300
Date/Time Start: 1997-09-09T02:00:00 * Date/Time End: 1997-09-11T21:15:00
Minimum DEPTH, sediment/rock: 198.27 m * Maximum DEPTH, sediment/rock: 448.12 m
Event(s):
175-1081A * Latitude: -19.619690 * Longitude: 11.319300 * Date/Time Start: 1997-09-09T02:00:00 * Date/Time End: 1997-09-11T21:15:00 * Elevation: -794.1 m * Penetration: 452.7 m * Recovery: 393.48 m * Location: Benguela Current, South Atlantic Ocean * Campaign: Leg175 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 49 cores; 452.7 m cored; 0 m drilled; 86.9 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
DEPTH, sediment/rockDepth sedmDupont, Lydie MGeocode
AGEAgeka BPDupont, Lydie MGeocode
Sample code/labelSample labelDupont, Lydie M
Impagidinium spp.Impagidinium spp.#Dupont, Lydie MCounting, dinoflagellate cysts
Impagidinium aculeatumI. aculeatum#Dupont, Lydie MCounting, dinoflagellate cysts
Impagidinium paradoxumI. paradoxum#Dupont, Lydie MCounting, dinoflagellate cysts
Impagidinium sphaericumI. sphaericum#Dupont, Lydie MCounting, dinoflagellate cysts
Impagidinium patulumI. patulum#Dupont, Lydie MCounting, dinoflagellate cysts
Impagidinium strialatumI. strialatum#Dupont, Lydie MCounting, dinoflagellate cysts
10 Impagidinium species 2 after De Schepper & Head (2009)Impagidinium sp. 2#Dupont, Lydie MCounting, dinoflagellate cysts
11 Operculodinium spp.Operculodinium spp.#Dupont, Lydie MCounting, dinoflagellate cysts
12 Operculodinium janducheneiO. janduchenei#Dupont, Lydie MCounting, dinoflagellate cysts
13 Operculodinium centrocarpumO. centrocarpum#Dupont, Lydie MCounting, dinoflagellate cysts
14 Operculodinium israelianumO. israelianum#Dupont, Lydie MCounting, dinoflagellate cysts
15 Pentapharsodinium daleiP. dalei#Dupont, Lydie MCounting, dinoflagellate cysts
16 Lingulodinium machaerophorumL. machaerophorum#Dupont, Lydie MCounting, dinoflagellate cysts
17 Brigantedinium spp.Brigantedinium spp.#Dupont, Lydie MCounting, dinoflagellate cysts
18 Selenopemphix nephroidesS. nephroides#Dupont, Lydie MCounting, dinoflagellate cysts
19 Selenopemphix brevispinosaS. brevispinosa#Dupont, Lydie MCounting, dinoflagellate cysts
20 Selenopemphix brevispinosa conspicuaS. brevispinosa conspicua#Dupont, Lydie MCounting, dinoflagellate cysts
21 Selenopemphix quantaS. quanta#Dupont, Lydie MCounting, dinoflagellate cysts
22 Selenopemphix armageddonensisS. armageddonensis#Dupont, Lydie MCounting, dinoflagellate cysts
23 Spiniferites spp.Spiniferites spp.#Dupont, Lydie MCounting, dinoflagellate cysts
24 Spiniferites ramosusS. ramosus#Dupont, Lydie MCounting, dinoflagellate cysts
25 Spiniferites mirabilisS. mirabilis#Dupont, Lydie MCounting, dinoflagellate cysts
26 Spiniferites cf. mirabilisS. cf. mirabilis#Dupont, Lydie MCounting, dinoflagellate cysts
27 Spiniferites membranaceusS. membranaceus#Dupont, Lydie MCounting, dinoflagellate cysts
28 Acomosphaera spp.Acomosphaera spp.#Dupont, Lydie MCounting, dinoflagellate cysts
29 Nematosphaeropsis labyrinthusN. labyrinthus#Dupont, Lydie MCounting, dinoflagellate cysts
30 Batiacasphaera micropapillataB. micropapillata#Dupont, Lydie MCounting, dinoflagellate cysts
31 Batiacasphaera hirsutaB. hirsuta#Dupont, Lydie MCounting, dinoflagellate cysts
32 Trinovantedinium glorianumT. glorianum#Dupont, Lydie MCounting, dinoflagellate cysts
33 Trinovantedinium papulaT. papula#Dupont, Lydie MCounting, dinoflagellate cysts
34 Trinovantedinium ferugnomatumT. ferugnomatum#Dupont, Lydie MCounting, dinoflagellate cysts
35 Trinovantedinium applanatumT. applanatum#Dupont, Lydie MCounting, dinoflagellate cysts
36 Tuberculodinium vancampoaeT. vancampoae#Dupont, Lydie MCounting, dinoflagellate cysts
37 Pyxidinopsis reticulataP. reticulata#Dupont, Lydie MCounting, dinoflagellate cysts
38 Habibacysta tectataH. tectata#Dupont, Lydie MCounting, dinoflagellate cysts
39 Lejeunecysta spp.Lejeunecysta spp.#Dupont, Lydie MCounting, dinoflagellate cysts
40 Lejeunecysta olivaL. oliva#Dupont, Lydie MCounting, dinoflagellate cysts
41 Lejeunecysta sabrinaL. sabrina#Dupont, Lydie MCounting, dinoflagellate cysts
42 Ataxiodinium zevenboomiiA. zevenboomii#Dupont, Lydie MCounting, dinoflagellate cysts
43 Ataxiodinium confusumA. confusum#Dupont, Lydie MCounting, dinoflagellate cysts
44 Quinquecuspis concretaQ. concreta#Dupont, Lydie MCounting, dinoflagellate cysts
45 Sumatradinium soucouyantiaeS. soucouyantae#Dupont, Lydie MCounting, dinoflagellate cysts
46 Dinoflagellate cyst indeterminataDinofl indet#Dupont, Lydie MCounting, dinoflagellate cystsvaria
47 Dinoflagellates, totalDinofl total#Dupont, Lydie MCounting, dinoflagellate cysts
48 Marker, foundMark found#Dupont, Lydie MCounting, dinoflagellate cysts
49 VolumeVolmlDupont, Lydie MCounting, dinoflagellate cysts
50 Marker, addedMark add#Dupont, Lydie MCounting, dinoflagellate cysts
Size:
3408 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Depth sed [m]

Age [ka BP]

Sample label

Impagidinium spp. [#]

I. aculeatum [#]

I. paradoxum [#]

I. sphaericum [#]

I. patulum [#]

I. strialatum [#]
10 
Impagidinium sp. 2 [#]
11 
Operculodinium spp. [#]
12 
O. janduchenei [#]
13 
O. centrocarpum [#]
14 
O. israelianum [#]
15 
P. dalei [#]
16 
L. machaerophorum [#]
17 
Brigantedinium spp. [#]
18 
S. nephroides [#]
19 
S. brevispinosa [#]
20 
S. brevispinosa conspicua [#]
21 
S. quanta [#]
22 
S. armageddonensis [#]
23 
Spiniferites spp. [#]
24 
S. ramosus [#]
25 
S. mirabilis [#]
26 
S. cf. mirabilis [#]
27 
S. membranaceus [#]
28 
Acomosphaera spp. [#]
29 
N. labyrinthus [#]
30 
B. micropapillata [#]
31 
B. hirsuta [#]
32 
T. glorianum [#]
33 
T. papula [#]
34 
T. ferugnomatum [#]
35 
T. applanatum [#]
36 
T. vancampoae [#]
37 
P. reticulata [#]
38 
H. tectata [#]
39 
Lejeunecysta spp. [#]
40 
L. oliva [#]
41 
L. sabrina [#]
42 
A. zevenboomii [#]
43 
A. confusum [#]
44 
Q. concreta [#]
45 
S. soucouyantae [#]
46 
Dinofl indet [#]
47 
Dinofl total [#]
48 
Mark found [#]
49 
Vol [ml]
50 
Mark add [#]
198.272727175-1081A-23X-4,67-69001020602301015420060880702533100010080000000183131905.037168
203.082843175-1081A-24X-1,28-300010008131564016211050390300159000530102110000283053385.037168
204.972893175-1081A-24X-2,67-69002040530491326012911211034000101610000010110002000153273455.037168
207.622963175-1081A-24X-4,32-3400003050127816011700010077010001015100000000200000183113065.037168
213.743130175-1081A-25X-1,134-136079090532102606802024023100021794100010481000000153144985.537168
216.303201175-1081A-25X-3,90-920110104710103621404202039042000002121100030020000000103052935.037168
219.323285175-1081A-25X-5,92-940340403443103201182001703801000120000030052100500113005975.037168
222.343370175-1081A-26X-1,34-360480704814929014401010240200097000010009000200123043065.037168
225.123449175-1081A-26X-3,12-140060607078132106800010029143007289000000000000000173164525.037168
227.703522175-1081A-26X-4,120-122006090371177551440101026010102724000000000000210113531716.537168
233.303676175-1081A-27X-2,30-3202806045012915055302390150000029700000210110000053203145.037168
236.653766175-1081A-27X-4,65-670480210300111611087011280910101172100040001410000103335105.037168
239.743849175-1081A-27X-6,74-76026090432190720620000070000012200004000020030033202795.037168
243.083935175-1081A-28X-2,38-40051307022088230117000001500000201500001017030040033084096.037168
248.114063175-1081A-28X-5,91-93024030013127701111300307000001600055004310000053022705.037168
252.124163175-1081A-29X-1,132-1340213010466142040631004028100001413000000310000300183275085.037168
257.144285175-1081A-29X-5,34-3601100102114660507200020019010001235000210764000005203131975.037168
260.724372175-1081A-30X-1,32-34071201014241512007340044013100007414000020115000000343156165.037168
263.244432175-1081A-30X-2,134-1360112000513802108010061012200103611100030168100600183442525.037168
266.064500175-1081A-30X-4,116-118006030100200403710020039117025461500002501760002000103221245.537168
270.504606175-1081A-31X-1,40-420112020154900220970204202900000429300490310000001133022735.037168
272.284649175-1081A-31X-2,68-7002000073261020133000150600000841300030081102000103171955.037168
273.394676175-1081A-31X-3,29-3107210094300601190001001100000310250001009210200613044235.037168
281.304869175-1081A-32X-2,10-12016020945350020640004706000009860040012000402063042185.037168
284.544950175-1081A-32X-4,34-36006010374600709520078024200008109009105371103000123582925.037168
288.365046175-1081A-32X-6,116-1180750300115101607800019020000043634000200016200400093264915.037168
290.505100175-1081A-33X-1,120-1220220070109008065030720110000031193200001322102001123043705.521358
292.005138175-1081A-33X-2,120-1220101008013170030113299580700000420210010016000000033062135.021358
294.545203175-1081A-33X-4,74-760210101031700260970777502100000121420021100201000004324615.021358
297.505279175-1081A-33X-6,70-7202603000910120310854301230000751101103213101100000103261375.021358
300.565357175-1081A-34X-2,6-8018090507001003905154013130000147964000031105005000273732505.021358
309.525585175-1081A-35X-1,92-94041506021160010222162200830202022194700110017100200043082815.021358
311.265628175-1081A-35X-2,116-11802509050181012232015490350001012463001000242104000123002245.021358
318.455803175-1081A-36X-1,25-27041005011016001237355023029186040681500380132110300083103115.021358
321.035864175-1081A-36X-3,88-90016030446007121030740200200042090003001021100000103021045.021358
323.865929175-1081A-36X-5,71-73009010001410205400044040000053121000300119100000033121495.021358
328.826042175-1081A-37X-1,102-10410120202400030321120170136200082100012041907200000103522145.521358
333.266139175-1081A-37X-4,96-980619080031112603362013010010008190000000155410200023122085.021358
334.826172175-1081A-37X-5,102-10400160502660260694704605130001324000040178520200093168115.021358
338.446250175-1081A-38X-1,94-96021701004402509331601069000001144400020030613123000103074295.521358
340.356290175-1081A-38X-2,135-1370313020052203201020110508000006651800000122213100073026915.521358
348.066449175-1081A-39X-2,14-16061901301710001241102140211100063286800260013731010190144011814.921358
353.626564175-1081A-39X-5,120-1220120070883002977110166308000001531700020213400100053132205.521358
355.576605175-1081A-39X-7,15-1703310403890093457000160214000016276006301711202000224014255.021358
357.426640175-1081A-40X-1,44-460722020218004374300150131000019510900110218000100083193255.021358
366.516838175-1081A-41X-1,11-130031030047007412221201703600000193200002061612000333202195.021358
369.746908175-1081A-41X-3,34-3702604024410632560110310610001215700115303313391050113302125.021358
371.776955175-1081A-41X-4,87-89052806011822003590104070000111751001003314011000103023905.021358
373.957005175-1081A-41X-6,7-900130100060001911306000584000098130056012152720010173352283.521358
378.757115175-1081A-42X-2,125-127072308000900395802282401500000217120012212380310102023173325.521358
382.987217175-1081A-42X-5,98-100015010448307638602143902030002780006000155172005010346665.121358
386.327299175-1081A-43X-1,72-74021706001310008303112030144300008642003100120200000153591575.521358
389.347373175-1081A-43X-3,74-760080000010017313912213001210000711000164301531410010113211545.021358
392.277448175-1081A-43X-5,67-690219010207102232450130230411600004139000440010200001093611585.021358
394.127496175-1081A-43X-6,102-1040030200030061958040103400053916011070000000000043111145.021358
397.187575175-1081A-44X-2,38-4014900000800616618344400922000735330033013851020000103511735.021358
405.177788175-1081A-45X-1,27-29311602006700110790100201161100518104401056618150040343221235.021358
407.717857175-1081A-45X-2,131-13302110300818000256040202300000712610000001213300001223324505.021358
408.787886175-1081A-45X-3,88-9001100202271020602608010800000457444003000512300000173151585.121358
411.537962175-1081A-45X-5,63-6503280501417007167190409200001070104133001432240030133182715.021358
414.998060175-1081A-46X-1,39-41033003010000131410571708000107642029700922940010183203495.021358
418.038145175-1081A-46X-3,43-4542270002030042251024030292000011871000600004200090113313735.021358
423.428301175-1081A-46X-6,132-1340311000740700395401501101910000767600100173112001083213734.921358
426.268383175-1081A-47X-2,56-58012200010010000140300140000021168000200062020000023134115.021358
429.048464175-1081A-47X-4,34-36091500090100411200390001403000288170041011337200000103093796.021358
434.158613175-1081A-48X-1,35-37022202180500173720034030401344012857000901011000000123221535.021358
439.178759175-1081A-48X-4,87-8901226050210300571413112010100022185100110227100000003344245.021358
442.938868175-1081A-48X-7,13-1501223060002006495303600022000005054200104012210000003357513.921358
444.398911175-1081A-49X-1,89-9101674020002100410250170012402002872300520131130010053128623.821358
446.638976175-1081A-49X-3,13-153337050302100281210220150275300001842010000004000000183224325.021358
448.129019175-1081A-49X-4,12-14542403000430072150700035400073536080400000000000383044154.521358