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Fourtanier, Elisabeth; Barron, John A (2000): (Table T1) Relative abundance of diatoms in ODP Hole 169-1034B sediments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.788787, Supplement to: Fourtanier, E; Barron, JA (2000): Data Report: Intra-annual variability of the diatom assemblages at Hole 1034B (Saanich Inlet) near 9 ka. In: Bornhold, BD; Firth, JV (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 169S, 1-8, https://doi.org/10.2973/odp.proc.sr.169S.195.2000

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Published: 2000 (exact date unknown) • DOI registered: 2012-10-16

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Abstract:
Ocean Drilling Program (ODP) Site 1034 (48°38.000'N, 123°30.000'W) was drilled at a water depth of 200 m in the Saanich Inlet, an anoxic fjord on the southeastern coast of Vancouver Island, British Columbia, to a depth of 118.2 meters below seafloor (mbsf). The uppermost 50 m consists of very well-laminated (triplet varves) diatomaceous muds deposited over the past 7000 yr. Below, sediments become progressively less distinctly laminated and reflect better oxygenated bottom-water conditions. The oldest sediments recovered at Site 1034 were dated as 14 to 15 ka (see Shipboard Scientific Party, 1998, doi:10.2973/odp.proc.ir.169s.1998).
Varved sediments recovered during Leg 169S in the Saanich Inlet offer an excellent opportunity to compare the interannual variability of recent climatic elements (e.g., sea-surface temperature, salinity, precipitation) with those of late Quaternary periods that were characterized by climates appreciably different from those of today. A large amount of recent diatom data from Saanich Inlet exists, which can serve as a baseline for such comparisons: Sancetta (1989a, doi:10.1029/PA004i003p00235; 1989b, doi:10.1093/plankt/11.3.503; 1990) investigated modern processes controlling the accumulation of diatoms and spacial and temporal trends of diatom flux in the Inlet; Sancetta and Calvert (1988, doi:10.1016/0198-0149(88)90058-1) documented the annual cycle of sedimentation in the fjord. McQuoid (1995) and McQuoid and Hobson (1997, doi:10.1093/plankt/19.2.173) studied the modern pattern of diatom succession in the Saanich Inlet and analyzed the diatoms in laminae couplets in frozen sediment cores for the years 1900 to 1991 A.D.
This report describes the intra-annual variability of the diatom assemblages at Site 1034, during a 8-yr interval near 9 ka. Pollen and dinoflagellates are being studied from the same samples by R. Hebda and P. Mudie (unpubl. data).
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 48.650000 * Longitude: -123.500000
Date/Time Start: 1996-08-20T12:30:00 * Date/Time End: 1996-08-20T12:30:00
Minimum Elevation: -203.0 m * Maximum Elevation: -203.0 m
Event(s):
169-1034B * Latitude: 48.650000 * Longitude: -123.500000 * Date/Time: 1996-08-20T12:30:00 * Elevation: -203.0 m * Penetration: 118.2 m * Recovery: 117.22 m * Location: Coastal waters of SE Alaska * Campaign: Leg169S * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 13 cores; 118.2 m cored; 0 m drilled; 99.2 % recovery
Comment:
Diatoms were identified and counted under the light microscope at 1000x. A total of at least 300 valves was counted per sample, with about half of the counts done on one slide and the other half on the other slide.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Sample code/labelSample labelFourtanier, ElisabethDSDP/ODP/IODP sample designation
2Diatom preservationDiatom preservFourtanier, ElisabethG = good, GM = good to moderate, MG = moderate to good, M = moderate
3Actinocyclus curvatulusA. curvatulus%Fourtanier, ElisabethCounting, diatoms
4Bacillaria sp.Bacillaria sp.%Fourtanier, ElisabethCounting, diatoms
5Bacteriastrum sp.Bacteriastrum sp.%Fourtanier, ElisabethCounting, diatoms
6Chaetoceros radicansC. radicans%Fourtanier, ElisabethCounting, diatoms
7Chaetoceros spp.Chaetoceros spp.%Fourtanier, ElisabethCounting, diatoms
8Coscinodiscus radiatusC. radiatus%Fourtanier, ElisabethCounting, diatoms
9Coscinodiscus sp.Coscinodiscus sp.%Fourtanier, ElisabethCounting, diatoms
10Cyclotella litoralisC. litoralis%Fourtanier, ElisabethCounting, diatoms
11Cyclotella spp.Cyclotella spp.%Fourtanier, ElisabethCounting, diatoms
12Delphineis spp.Delphineis spp.%Fourtanier, ElisabethCounting, diatoms
13Ditylum sp.Ditylum sp.%Fourtanier, ElisabethCounting, diatoms
14Neodenticula seminaeN. seminae%Fourtanier, ElisabethCounting, diatoms
15Nitzschia pungensN. pungens%Fourtanier, ElisabethCounting, diatoms
16Nitzschia pacificaN. pacifica%Fourtanier, ElisabethCounting, diatoms
17Proboscia alataP. alata%Fourtanier, ElisabethCounting, diatoms
18Rhizosolenia sp.Rhizosolenia sp.%Fourtanier, ElisabethCounting, diatomscf. R. setigera
19Skeletonema costatumS. costatum%Fourtanier, ElisabethCounting, diatoms
20Stephanopyxis spp.Stephanopyxis spp.%Fourtanier, ElisabethCounting, diatoms
21Synedra sp.Synedra sp.%Fourtanier, ElisabethCounting, diatomsmarine
22Thalassionema nitzschioidesT. nitzschioides%Fourtanier, ElisabethCounting, diatoms
23Thalassionema sp.Thalassionema sp.%Fourtanier, ElisabethCounting, diatoms
24Thalassiosira eccentricaT. eccentrica%Fourtanier, ElisabethCounting, diatoms
25Thalassiosira lineataT. lineata%Fourtanier, ElisabethCounting, diatoms
26Thalassiosira nordenskioeldiiT. nordenskioeldii%Fourtanier, ElisabethCounting, diatoms
27Thalassiosira oestrupiiT. oestrupii%Fourtanier, ElisabethCounting, diatoms
28Thalassiosira pacificaT. pacifica%Fourtanier, ElisabethCounting, diatoms
29Thalassiosira spp.Thalassiosira spp.%Fourtanier, ElisabethCounting, diatoms
30Thalassiothrix longissimaT. longissima%Fourtanier, ElisabethCounting, diatoms
31Diatoms, plankticDiatom plank%Fourtanier, ElisabethCounting, diatomsothers
32Actinoptychus senariusA. senarius%Fourtanier, ElisabethCounting, diatoms
33Actinoptychus splendensA. splendens%Fourtanier, ElisabethCounting, diatoms
34Paralia sulcataP. sulcata%Fourtanier, ElisabethCounting, diatoms
35Diatoms, benthicDiatom benthic%Fourtanier, ElisabethCounting, diatoms
36Diatoms freshwaterDiatom fw%Fourtanier, ElisabethCounting, diatoms
37DiatomsDiatoms#Fourtanier, ElisabethCounting, diatomstotal counted
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3811 data points

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