Advective Displacement Method for the Characterisation of Pore Water Chemistry and Transport Properties in Claystone

<div>Water stable isotope composition of samples from advective displacement, diffusive exchange, and pore water squeezing from samples of Opalinus Clay (OPA) and Brown Dogger (BD). Samples from similar depth as advective displacement samples are correlated by different borders around symbols (black, orange, and dotted). Errors on <i>δ</i><sup>18</sup>O are 0.15–0.2<svg height="8.77704pt" id="M10" style="vertical-align:-0.4347391pt" version="1.1" viewbox="-0.0498162 -8.3423 13.9574 8.77704" width="13.9574pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M586 629L554 652L152 -9L183 -32L586 629ZM192 635C92 635 49 537 49 457C49 380 92 281 191 281C291 281 334 380 334 458C334 537 291 635 192 635ZM192 606C254 606 261 507 261 458C261 412 254 309 193 309C134 309 122 410 122 459C122 509 132 606 192 606ZM554 343C453 343 410 244 410 165C410 87 453 -12 553 -12C652 -12 695 87 695 165C695 244 652 343 554 343ZM876 343C777 343 733 244 733 165C733 87 777 -12 875 -12C975 -12 1018 87 1018 165C1018 244 975 343 876 343ZM553 314C614 314 622 214 622 165C622 119 614 17 554 17C493 17 483 117 483 166C483 216 493 314 553 314ZM875 314C937 314 945 214 945 165C945 119 937 17 876 17C816 17 806 117 806 166C806 216 816 314 875 314Z"></path></g></svg> and 1.5–2<svg height="8.77704pt" id="M11" style="vertical-align:-0.4347391pt" version="1.1" viewbox="-0.0498162 -8.3423 13.9574 8.77704" width="13.9574pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M586 629L554 652L152 -9L183 -32L586 629ZM192 635C92 635 49 537 49 457C49 380 92 281 191 281C291 281 334 380 334 458C334 537 291 635 192 635ZM192 606C254 606 261 507 261 458C261 412 254 309 193 309C134 309 122 410 122 459C122 509 132 606 192 606ZM554 343C453 343 410 244 410 165C410 87 453 -12 553 -12C652 -12 695 87 695 165C695 244 652 343 554 343ZM876 343C777 343 733 244 733 165C733 87 777 -12 875 -12C975 -12 1018 87 1018 165C1018 244 975 343 876 343ZM553 314C614 314 622 214 622 165C622 119 614 17 554 17C493 17 483 117 483 166C483 216 493 314 553 314ZM875 314C937 314 945 214 945 165C945 119 937 17 876 17C816 17 806 117 806 166C806 216 816 314 875 314Z"></path></g></svg> for <i>δ</i><sup>2</sup>H, but precision is much better for samples measured in the same analytical sample series. DiffEx: diffusive exchange; SQ: squeezing; AD: advective displacement; GMWL: global meteoric water line.</div>

Geofluids

fig6

Figure 6

Figure 6: Advective Displacement Method for the Characterisation of Pore Water Chemistry and Transport Properties in Claystone 