Geochemical and sedimentological record of sediment core ETL-C3 retrieved from Ea Tyn Lake (Central Highlands, Vietnam)
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| Main Authors: | , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2023
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| _version_ | 1867169520113680384 |
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| author | Unkel, Ingmar Nguyễn-Đình, Thái Nguyễn-Thùy, Dương Ojala, Antti E K Schimmelmann, Arndt Nguyễn-Văn, Hướng |
| author_facet | Unkel, Ingmar Nguyễn-Đình, Thái Nguyễn-Thùy, Dương Ojala, Antti E K Schimmelmann, Arndt Nguyễn-Văn, Hướng |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | In March 2020, two parallel sediment cores ETL-C3 and ETL-C4 (12.38589°N, 107.95399°E) were recovered from Ea Tyn Lake (Vietnam) using a Livingston/Bolivia-style customized piston corer. The cores represent sequences of 1-m segments with a vertical offset of ~50 cm between cores to ensure a complete record without gaps between successive segments. The two cores were visually correlated based on marker layers producing an ETL master sequence with a total length of 877 cm (sedimentary units 1-14). The core was scanned at 1 cm resolution with an Avaatech X-ray Fluorescence (XRF) core scanner and the raw data presented here is displayed as element counts per second (cps). RGB colour values were taken with a digital line scan camera to depict colour variation with depth. RGB colors were tranformed into the CIELAB color space using convertColor in the R-package grDevices. Principal component analysis (PCA) was performed using the basic-R function prcomp. The chronology is based on 12 AMS radiocarbon (14C) dates derived from plant macrofossils and measured at the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility. The age-depth-model was produced based on the 12 14C dates and 4 137Cs dates using the R-package rbacon. The core sequence covers the last 1250 years cal BP and reflects long-term monsoon variability (Rb/Sr ratio) and drought events (PC2) in the throughout the respective time window of the core. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_959221 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemical and sedimentological record of sediment core ETL-C3 retrieved from Ea Tyn Lake (Central Highlands, Vietnam) Unkel, Ingmar Nguyễn-Đình, Thái Nguyễn-Thùy, Dương Ojala, Antti E K Schimmelmann, Arndt Nguyễn-Văn, Hướng drought; Geochemistry; Lake sediment core; Late Holocene; Monsoon; palaeoclimate; Southeast Asia; XRF In March 2020, two parallel sediment cores ETL-C3 and ETL-C4 (12.38589°N, 107.95399°E) were recovered from Ea Tyn Lake (Vietnam) using a Livingston/Bolivia-style customized piston corer. The cores represent sequences of 1-m segments with a vertical offset of ~50 cm between cores to ensure a complete record without gaps between successive segments. The two cores were visually correlated based on marker layers producing an ETL master sequence with a total length of 877 cm (sedimentary units 1-14). The core was scanned at 1 cm resolution with an Avaatech X-ray Fluorescence (XRF) core scanner and the raw data presented here is displayed as element counts per second (cps). RGB colour values were taken with a digital line scan camera to depict colour variation with depth. RGB colors were tranformed into the CIELAB color space using convertColor in the R-package grDevices. Principal component analysis (PCA) was performed using the basic-R function prcomp. The chronology is based on 12 AMS radiocarbon (14C) dates derived from plant macrofossils and measured at the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility. The age-depth-model was produced based on the 12 14C dates and 4 137Cs dates using the R-package rbacon. The core sequence covers the last 1250 years cal BP and reflects long-term monsoon variability (Rb/Sr ratio) and drought events (PC2) in the throughout the respective time window of the core. |
| title | Geochemical and sedimentological record of sediment core ETL-C3 retrieved from Ea Tyn Lake (Central Highlands, Vietnam) |
| topic | drought; Geochemistry; Lake sediment core; Late Holocene; Monsoon; palaeoclimate; Southeast Asia; XRF |
| url | https://doi.org/10.1594/PANGAEA.959221 |