Supplementary data to: Ultraslow seafloor accretion in the Arctic: Basalt and peridotite geochemistry record spreading evolution along the Lena Trough–Gakkel Ridge system

This dataset contains basalt and peridotite geochemical compositions, namely major and trace elements, from the Gakkel Ridge and Lena Trough.

Dataset S1. Major and trace element compositions of basalts analyzed in this study.

Dataset S2. Major and trace element bulk and mineral compositions of peridotites analyzed in this study. 

Dataset S3. Basalt geochemistry. Compilation of newly acquired and previously published data as described in Section 3.1 in the main text. Magnetic anomaly intensities are extracted from GeoMapApp v3.7.4 (https://www.geomapapp.org) using the EMAG2 (2-arc-minute resolution, 2013) dataset (Maus et al., 2009).

Dataset S4. Basalt geochemical dataset based on Dataset S3, with values averaged per sample.

Dataset S5. Peridotite geochemistry. Compilation of newly acquired and previously published data as described in Sections 3.1 and 3.2 in the main text. Magnetic anomaly intensities are extracted from GeoMapApp v3.7.4 (https://www.geomapapp.org) using the EMAG2 (2-arc-minute resolution, 2013) dataset (Maus et al., 2009). See table note for explanation of additional parameters.

Dataset S6. Peridotite geochemical dataset based on Dataset S5, with values averaged per sample.