PMC

Broadband fits of complex permittivity (a,b) and (c,d) of lawsonite as a function of temperature. Symbols: experimental values obtained by impedance (selected frequencies) and THz spectroscopies; lines: fits using Eq. (). The estimated precision of the complex permittivity values is .

Polarized spectra of complex permittivity of lawsonite in the THz range as a function of temperature. Panels (a,c,e): real parts, panels (b,d,f): imaginary parts. The insets show temperature dependences of the appropriate values at the frequency of  THz; points: measured values, lines: guides for the eye.

Comparison of polarized reflectance data and complex permittivity spectra of lawsonite in the IR range at 20, 200 and 300 K. Symbols below and above : experimental data from THz time-domain transmittance [calculated from the complex permittivity using Eq. ()] and IR reflectivity measurements, respectively. Lines: spectra fits.

Sm/La and Th/La of lawsonite in sample 10tav07 correlates positively, as in the AHOB lavas in , accentuated by the analyses from nearby Sivrihisar (). New Caledonia data from Spandler et al. (), Alpine Corsica data from Vitale Brovarone et al. (), and previous Tavşanlı data from Fornash et al. () and Fornash and Whitney (). For lawsonite data from this study, see data file S2.