Water chemistry of unfiltered groundwater samples from the Fennoscandian Shield deep terrestrial biosphere in 2018 and 2019

Copious amounts of organic carbon are stored for long periods of time in deep continental groundwaters. Little is known about its composition and cycling, mainly due to the difficulties in obtaining sample material. Cool fracture waters of different origins can be obtained under clean conditions at...

Full description

Bibliographic Details
Main Authors: Osterholz, Helena, Turner, Stephnie, Alakangas, Linda, Tullborg, Eva-Lena, Kalinowski, Birgitta, Dittmar, Thorsten, Dopson, Mark
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
aquifer
BalticSea_Äspö
BalticSea_Kalmar
Calcium
Carbon
organic
dissolved
standard deviation
Carbon-14
modern
dissolved inorganic carbon
dissolved organic carbon
Chlorine
Conductivity
DATE/TIME
Elevation of event
Event label
Extraction efficiency
FT-ICR-MS
groundwater
HA2780A_1
Iron
total
Iron 2+
KA1755A_3
KA2051A01_5
KA2511A_5
KA2862A_1
KA2865A01_1
KA3105A_3
KA3385A_1
KA3510A_2
KA3600F_2
Latitude of event
Longitude of event
Magnesium
Manganese
Nitrogen
total dissolved
Nitrogen in ammonium
Nitrogen in nitrate
Fennoscandian
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.939654
https://doi.org/10.1594/PANGAEA.939654
Description
Summary:Copious amounts of organic carbon are stored for long periods of time in deep continental groundwaters. Little is known about its composition and cycling, mainly due to the difficulties in obtaining sample material. Cool fracture waters of different origins can be obtained under clean conditions at Äspö Hard Rock Laboratory (Äspö HRL, Sweden), operated by the Swedish Nuclear Fuel and Waste Management Company (SKB). We sampled groundwater from different depth (171 to 507 meter below sea level) in the bedrock fractures in November 2018 and March-April 2019. We assessed water chemistry and dissolved organic matter composition via stable carbon isotopic and molecular-formula level analysis in recent Baltic Sea-influenced to old saline fracture waters in the granitic Fennoscandian shield. Physicochemical parameters, major ions, water isotopic compositions (δ18O and δD), total nitrogen as well as dissolved organic matter concentration and stable isotopic composition were obtained for unfiltered groundwater samples from different boreholes.

Similar Items