EUNAseis: A seismic model for Moho and crustal structure in Europe, Greenland, and the North Atlantic region

摘要: Abstract We present a new digital crustal model for Moho depth and structure in Europe, Greenland, Iceland, Svalbard, European Arctic shelf, the North Atlantic Ocean (72W–62E, 30N–84N). Our compilation is based on digitization of original seismic profiles Receiver Functions from ca. 650 publications which provides dense regional data coverage. Exclusion non-seismic allows application database to potential field modeling. EUNAseis includes Vp velocity thickness five layers, including sedimentary cover, Pn velocity. For each parameter we discuss uncertainties associated with theoretical limitations, quality, interpolation. By analyzing trends links tectonic evolution illustrated by map, conclude that: (1) Each setting shows significant variation structure, essentially controlled age latest tectono-thermal processes; (2) Published global averages parameters are outside observed ranges any Europe; (3) Variation cover does not follow commonly accepted trends; (4) The ratio between upper-middle (Vp   6.8 km/s) crystalline crust indicative origin: oceanic, transitional, platform, or extended crust; (5) Continental rifting generally thins significantly without changing Vp. Lower experiences less thinning, also Vp, suggesting complex interplay magmatic underplating, gabbro-eclogite phase transition delamination; (6) Crustal Barents Sea shelf differs rifted continental (7) Most north 55°N has anomalously shallow bathymetry thick oceanic crust. A belt exceptionally (ca. 30 km) probable origin both sides southern Greenland Greenland–Iceland–Faeroe Ridge east similar “Baffin Ridge” feature west.