New gravity maps of the Eastern Alps and significance for the crustal structures

Zanolla, C.; Braitenberg, Carla; Ebbing, Jörg; Bernabini, M.; Bram, K.; Gabriel, Gerald; Götze, Hans‐Jürgen; Giammetti, S.; Meurers, Bruno; Nicolich, R.; Palmieri, F.

doi:10.1016/j.tecto.2005.10.012

Cited by 20 publications

(16 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, GEISSLER et al (2007) report on the noritic xenolith of lower crustal origin from one of the Quaternary volcanoes in the Eger Graben. Some tendency to attribution of the lower value of the crustal density gradient in the Palaeozoic part of this area can be noticed in detailed gravity modelling of this area ZANOLLA et al, 2006). Another petrophysical dilemma is the modelled low density of the uppermost mantle.…”

Section: Figurementioning

confidence: 87%

Searching for Regional Crustal Velocity-Density Relations with the Use of 2-D Gravity Modelling – Central Europe Case

Krysiński

Grad

Wybraniec

2009

Pure Appl. Geophys.

View full text Add to dashboard Cite

In this paper we search for a reference relation between seismic P-wave velocity V and density q ref for the continental crust. Based on the results of modern seismic experiments, we compiled 2-D seismic models into a network of four, each about 1100-1400 km long, continental-scale seismic transects cutting all main tectonic units in Central Europe. The Moho depth (about 52 km beneath the TESZ in SE Poland, to about 25 km beneath the Pannonian Basin) and the crustal structure of this area are characterised by a large variation. This structural variation provides an interesting basis for gravity studies and especially for analysing the difference of the density structure between two major tectonic provinces of distinctive age difference: Precambrian and Phanerozoic. The 2-D gravity modelling applied for crustal cross-sections representing the regional structure, based on a unified gravity anomaly map of the area, allows for a stable determination of some general features of the regional reference velocity-density relation for the continental crust. In general three major seismo-petrological types of rocks can be distinguished: sediments, crystalline crust and mantle. In compacted sediments the reference velocity-density relation is well described by the Gardner or Nafe-Drake model. Calculated gravity anomalies, using unified velocity-density relation for the whole crystalline crust, well describe observed anomalies, with an average difference of 14 mGal. However, calculated gravity anomalies, using separated velocity-density relations for the crystalline crust of Precambrian and Phanerozoic Europe, describe observed anomalies better than for the entire crust, with an average difference 12 mGal. The most important feature of these relations is the large differentiation of the derivative dq ref /dV in the crystalline crust, being about 0.3 g s/m 4 for Precambrian, and about 0.1 g s/m 4 for the Phanerozoic crystalline crust. The modelling suggests a very small density value in the uppermost mantle q = 3.11 g/cm 3 below the younger area, while for the older area it is q = 3.3 g/cm 3 .

show abstract

Section: Figurementioning

confidence: 87%

Searching for Regional Crustal Velocity-Density Relations with the Use of 2-D Gravity Modelling – Central Europe Case

Krysiński

Grad

Wybraniec

2009

Pure Appl. Geophys.

View full text Add to dashboard Cite

show abstract

“…Wide angle reflection and refraction tomography (Bleibinhaus et al, 2006), receiver functions (Kummerov et al, 2004), and teleseismic tomography (Lippitsch et al, 2003) were integrated into the transect. Gravimetric studies supplemented the seismic transect (Ebbing et al, 2006;Zanolla et al, 2006). In 2000 and 2002 the large WAR/R experiments CELEBRATION 2000 and ALP 2002 covered an area from the European Craton in the north-east to the Adriatic foreland in the south-west (Guterch et al, 2003a(Guterch et al, , 2003bBrückl et al, 2003).…”

Section: Seismic Profiles Through the Crustmentioning

confidence: 99%

“…Gravity studies have a long history within the scope of exploration of the deep crustal structure of the Eastern Alps (e.g., Meurers et al, 1987, Lillie et al, 1994. The seismologic explorations during the TRANSALP project were also accompanied by the compilation of latest gravity data in that region (Zanolla et al, 2006), gravimetric modelling and studies about isostasy (e.g., Ebbing et al, 2006). Studies on the integration of gravity data and the seismic models derived from the CELEBRATION 2000 and ALP 2002 data were carried out by Brückl et al (2006) and Simeoni and Brückl (2009).…”

mentioning

confidence: 99%

Lithospheric Structure and Tectonics of the Eastern Alps – Evidence from New Seismic Data

Brückl¹

2011

Tectonics

View full text Add to dashboard Cite

“…The reflection seismic exploration of the chain has reached the peak with the TRAN-SALP transect in the Eastern Alps (Lueschen et al 2006), acquired with updated instruments and completed with multidisciplinary approaches: acquisition of explosive reflections and wide-angle profiles with a 3D control of the deep structures; gravity measurements and compilation of Bouguer anomalies map from Bavaria to the Adriatic sea (Zanolla et al 2006); recording of seismological data with a permanent network of stations.…”

Section: Geophysical Investigations Of the Crust In The Adria Domainmentioning

confidence: 99%

Geophysical investigation of the crust of the Upper Adriatic and neighbouring chains

Nicolich

2010

Rend. Fis. Acc. Lincei

Self Cite

View full text Add to dashboard Cite

The Adria domain and the neighbouring chains (Alps, Apennines, Dinarides) are presented with images and interpretative models indicating their main crustal characteristics as revealed by the geophysical prospecting (gravity, receiver functions, wideangle seismic and near vertical reflections). The collision with the adjacent blocks has implied deformations of the lower crust and of the crust-mantle boundary with accretionary wedging of slabs of lithosphere, entire crust or upper crust, respectively. The position of the main decoupling levels within the subducting lithosphere like the Sub Tauern Ramp in the Eastern Alps is the key parameter for the post-collision evolution. Decoupling levels at the top of the lower crust or at the base of the upper crust also might have played a dominant role in the orogenic movements controlling the present-day crustal architecture. According to the recent acquisitions a triple junction among Adria, Pannonian and European crusts is proposed near Katschberg, at the eastern edge of the Tauern Window, with Pannonian acting as upper plate in the collision with Europe and with Adria: Europe underthrusts Adria and Pannonian and Adria underthrusts Pannonian fragments. Finally, Adria underthrusts the Apennines along the western side of the Adriatic Sea. The paper revisits the geophysical data (mainly reflection and refraction seismic) to evidence resolution and penetration limits in the exploration of crustal structures.

show abstract

New gravity maps of the Eastern Alps and significance for the crustal structures

Cited by 20 publications

References 26 publications

Searching for Regional Crustal Velocity-Density Relations with the Use of 2-D Gravity Modelling – Central Europe Case

Searching for Regional Crustal Velocity-Density Relations with the Use of 2-D Gravity Modelling – Central Europe Case

Lithospheric Structure and Tectonics of the Eastern Alps – Evidence from New Seismic Data

Geophysical investigation of the crust of the Upper Adriatic and neighbouring chains

Contact Info

Product

Resources

About