
High-Resolution Lithofacies and Biofacies of the Recent Northern Israeli Shelf: Establishing a Baseline for Paleo-Environmental Reconstruction
Mironovich, A. (1), Kanari, M. (1,2), Katz. T. (2), Anagnostoudi, Th. (1), Goodman-Tchernov, B.N. (1)
(1) The Dr. Moses Strauss Department of Marine Geosciences, Leon H.Charney School of marine sciences. University of Haifa, Mt. Carmel, Haifa 3498838
(2) Israel Oceanographic & Limnological Research Ltd., Tel-Shikmona, P.O.Box 8030, Haifa 31080, Israel
Datasets produced from multi-proxy analysis of modern seafloor sediments can provide useful reference values for interpreting current and past environmental conditions. For the Israeli Mediterranean marine shelf, most studies and sedimentary models have generalized depositional environments into broad, uniform facies belts with only depth and sediment grain size associations. This study expands upon this approach by presenting a high-resolution combined analysis of recent lithofacies (grain size, TOC, XRF) and biofacies (foraminifera) from the Northern Israeli shelf (28–85 m). The area selected, north and south of the Carmel structure, is often cited as a natural divide for offshore sediment character. We demonstrate that while sedimentary texture may appear homogeneous across large areas, biotic assemblages reveal a highly complex, site-specific environmental mosaic.Our dataset identifies a sharp decoupling between substrate type and micro-habitat conditions, even within lithologically similar units, such as the outer-shelf muds. In addition, biofacies analysis similarly distinguishes different environments. For instance, stations at comparable depths (66–85 m) North and South of Carmel Structure exhibited divergent foram signatures, separating the organic-enriched, stress-tolerant assemblages of the Haifa Bay depocenter from the specialized deep-water assemblages found in the "shadow" of the Carmel Structure. Furthermore, sample locations with similar sand content values revealed different foraminifera groupings that could be associated with hydrodynamic conditions. We conclude that our method can highlight localized subtleties that are otherwise masked when relying solely on basic lithology. Consequently, a higher resolution bio-litho facies approach is essential for accurately reconstructing the complexity of the paleoenvironment, taking into account localized unique conditions (hydrodynamic regime and depositional settings) across the Levantine shelf.



