2025/06/27 by Ana Cristina Rebelo, Alfred Uchman, Markes E. Johnson +9 · 1 voice
Earth and Planetary Sciences · #Geology and Paleoclimatology Research #Geological formations and processes #Geological and Geophysical Studies Worldwide
paper · doi:10.1016/j.jop.2025.100266
openalex publication_date 2025/06/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Fan-delta systems are geomorphological structures and sedimentary records seldom preserved on oceanic volcanic islands. The generally coarse-grained deposits belonging to the Las Palmas Detritic Formation (Mio-Pliocene) at the Las Rehoyas section, NE part of Gran Canaria Island (Canary Islands, Spain), contain abundant but relatively small rhodoliths, non-nucleated, in partly bioturbated ( Skolithos ichnofacies) sand-dominated strata. This section consists of four sedimentary units deposited in a fan-delta system that developed on a marine platform in the northeastern part of the island. The system was flooded during the late Miocene to early Pliocene, a non-eruptive phase on Gran Canaria Island. Stabilization of the fan delta due to a relative rise in sea level enabled colonization by burrowing organisms and the development of rhodoliths, which were redeposited by storms from the lower shoreface–offshore to the foreshore–middle shoreface environment.