Fietz et al., 2021 - OA Dataset

Dataset that was collected for publication in S.W. Fietz, M.K. Gingras, J.A. MacEachern, L. Rinke-Hardekopf, and S.E. Dashtgard, 2021. Sedimentology and neoichnology of a muddy translating point bar in the fluvio-tidal transition, Serpentine River, BC, Canada. Sedimentary Geology
Dataset comprises
1) Coordinates of 13 boxcores and 15 grab samples at the studied translating point bar are listed. The positions of the boxcores in the lower, middle and upper intertidal zone are indicated. Grab samples were collected from the subtidal zone of the bar. The approximate vertical position of each sample station is given relative to NAD83(CSRS) 4.0.0.BC.1.GVRD 2005-04-05 (horizontal datum).
2) Raw data of grain size analyses are part of this dataset. Grain size analyses were conducted on 2-3 samples per boxcore and each grab sample. Samples were analyzed using a Malvern Mastersizer Hydro 2000 with a fluid accessory. Results are given in µm. Treatment of samples prior to processing them for grain size analysis is described by Czarnecki et al., (2014). Sieve data are given in mm.
3) Total organic carbon content (wt%) was measured for 2-3 samples per boxcore and each grab sample, using the Loss-on-Ignition method described by Heiri et al., (2001).
4) Size-diversity index (SDI) calculations were conducted following the method described by Hauck et al., (2009). SDI is a value derived by multiplying the largest burrow diameter with the diversity of traces observed.
5) Macrobenthos population counts were conducted for each station in the intertidal zone. Genus and species as well as their abundances at each station are made available.
6) Salinity (‰) was measured with a digital refractometer at the landward side of the bar and the seaward side of the bar. Date, time and coordinates of the salinity measurement locations are documented.

References:
Czarnecki, J.M., Dashtgard, S.E., Pospelova, V., Mathewes, R.W., MacEachern, J.A., 2014. Palynology and geochemistry of channel-margin sediments across the tidal-fluvial transition, lower Fraser River, Canada: Implications for the rock record. Marine and Petroleum Geology 51, 152–166.
Hauck, T.E., Dashtgard, S.E., Pemberton, S.G., Gingras, M.K., 2009. Brackish-water ichnological trends in a microtidal barrier island-embayment system, Kouchibouguac National Park, New Brunswick, Canada. Palaios 24, 478–496.
Heiri, O., Lotter, A., Lemcke, G., 2001. Loss on ignition as a method for estimating organic and carbonate content in sediments: Reproducibility and comparability of results. Journal of Paleolimnology 25, 101–110.

本数据集为发表于S.W. 菲茨（S.W. Fietz）、M.K. 金格拉斯（M.K. Gingras）、J.A. 麦凯彻恩（J.A. MacEachern）、L. 林克-哈德科普夫（L. Rinke-Hardekopf）与S.E. 达什特加德（S.E. Dashtgard）2021年研究的配套数据，原文题为《加拿大不列颠哥伦比亚省蛇河河潮过渡带淤泥质迁移点坝的沉积学与新遗迹学》，刊载于《沉积地质学》（*Sedimentary Geology*）。

本数据集包含以下内容：
1. 列出了研究区迁移点坝上13个箱式岩心（boxcore）与15个抓斗采样（grab sample）点位的坐标。其中箱式岩心布设于潮间带（intertidal zone）的下、中、上部区域，抓斗采样均采集自该点坝的潮下带（subtidal zone）。所有采样站位的近似垂向位置均以NAD83(CSRS) 4.0.0.BC.1.GVRD 2005-04-05（水平基准面）为参照给出。
2. 包含粒度分析（grain size analysis）原始数据。对每个箱式岩心采集2~3份样品，每份抓斗采样样品均开展粒度分析，测试设备为配备流体附件的马尔文Mastersizer Hydro 2000激光粒度仪，测试结果以微米（µm）为单位。样品前处理流程参见Czarnecki等人（2014）的研究。筛析数据以毫米（mm）为单位提供。
3. 对每个箱式岩心的2~3份样品及每份抓斗采样样品，采用Heiri等人（2001）提出的烧失量法（Loss-on-Ignition method）测定了总有机碳含量（total organic carbon content，wt%）。
4. 尺寸-多样性指数（Size-diversity index, SDI）的计算遵循Hauck等人（2009）的方法：该指数为最大潜穴直径与观测到的遗迹化石多样性的乘积。
5. 对潮间带所有采样站位开展了大型底栖生物（Macrobenthos）种群计数，公开了各站位的生物属种信息及其丰度。
6. 采用数字折射仪在研究点坝的向陆侧与向海侧测定了盐度（salinity，‰），并记录了盐度测量点位的日期、时间与坐标。

参考文献：
Czarnecki, J.M., Dashtgard, S.E., Pospelova, V., Mathewes, R.W., MacEachern, J.A., 2014. 加拿大弗雷泽河下游潮河过渡带岸缘沉积物的孢粉学与地球化学：对岩石记录的启示. 海洋与石油地质学（Marine and Petroleum Geology）, 51卷, 152–166页.
Hauck, T.E., Dashtgard, S.E., Pemberton, S.G., Gingras, M.K., 2009. 加拿大新不伦瑞克省库奇布瓜克国家公园微型潮障壁岛-海湾系统中的咸水遗迹学趋势. 古湖沼学杂志（Palaios）, 24卷, 478–496页.
Heiri, O., Lotter, A., Lemcke, G., 2001. 烧失量法估算沉积物中有机质与碳酸盐含量：结果的重现性与可比性. 古湖沼学杂志（Journal of Paleolimnology）, 25卷, 101–110页.