Replication data for "Caledonian reactivation and reworking of Timanian thrust systems and implications for latest Mesoproterozoic to mid-Paleozoic tectonics and magmatism in northern Baltica"

Replication data for "Caledonian reactivation and reworking of Timanian thrust systems and implications for latest Mesoproterozoic to mid-Paleozoic tectonics and magmatism in northern Baltica". The dataset includes the following: -Figure 1a: Figure 1. ( a) Elevation map of the Barents Sea, northern Norway and northwestern Russia showing major structural elements from the Norwegian Offshore Directorate (thin white lines) and major fault trends in the Barents Sea (Timanian; yellow lines). The location of ( a) is shown as a red rectangle in the upper inset map and the location of ( b) as a black rectangle. The basemap and the upper inset are from Jakobsson et al. (2012). A Polar Stereographic projection was used (datum: WGS84). Abbreviations: AFC: Asterias Fault Complex; AKTW: Alta–Kvænangen tectonic window; BaFZ: Baidaratsky Fault Zone; BB: Bjørnøya Basin; BFC: Bjørnøyrenna Fault Complex; BP: Bjarmeland Platform; CTF: Central Timan Fault; ETF: East Timan Fault; FG: Forlandsundet Graben; FP: Finnmark Platform; FSB: Fingerdjupet Sub-Basin; FTB: Fold-and-Thrust Belt; HB: Harstad Basin; HfB: Hammerfest Basin; HFC: Hoop Fault Complex; JFC: Jason Fault Complex; KCFZ: Kongsfjorden–Cowanodden fault zone; KDFZ: Kinnhøgda–Daudbjørnpynten fault zone; LH: Loppa High; MB: Maud Basin; MFC: Måsøy Fault Complex; MFZ: Molloy Fracture Zone; MH: Mercurius High; NB: Nordkapp Basin; ND: Norsel Dome; NH: Norsel High; OB: NP: Nordkinn Peninsula; Olga Basin; PSP: Polhem Sub-Platform; RFC: Ringvassøya Fault Complex; RP: Rybachi Peninsula; SaD: Samson Dome; SeFZ: Senja Fracture Zone; SD: Sredni Peninsula; SFZ: Spitsbergen Fracture Zone; SH: Stappen High; SIP: Seiland Igneous Province; SISZ: Sørøya–Ingøya shear zone; SkB: Sørkapp Basin; SR: Senja Ridge; SRFZ: Sredni–Rybachi Fault Zone; SvB: Sørvestnaget Basin; SvD: Svalis Dome; TFFC: Troms–Finnmark Fault Complex; TKFZ: Trollfjorden–Komagelva Fault Zone; TyB: Tiddlybanken Basin; TøB: Tromsø Basin; VH: Veslemøy High; VKSZ: Vimsodden–Kosibapasset Shear Zone; VP: Varanger Peninsula; WTF: West Timan Fault. -Figure 1b: ( b) Geological map of northern Norway and the southern Barents Sea showing the main onshore and offshore structures and tectonostratigraphic units. The map is after Koehl et al. (2019) with updates after Siedlecka and Siedlecki (1967), Siedlecki (1980), Townsend et al. (1986), Rice (1994), Kirkland et al. ( 2005; 2006a; 2007a; 2007b; 2008a; 2008b), Indrevær et al. (2013), Corfu et al. (2014), Koehl et al. (2018a), Faber ( 2018, manuscript 3), and Roberts and Siedlecka (2022). Abbreviations: AFC – Asterias Fault Complex; AsW: Altenes tectonic window; AW: Alta–Kvænangen tectonic window; Bf: Båtsfjorden; BFC: Bjørnøyrenna Fault Complex; Bj: Bjørnøya; Bn: Båsnæringsfjellet; Bv: Berlevåg; DP: Digermulen Peninsula; GL: Gjesvær Low; Hj: Hjelmsøya; Ig: Ingøya;Kf: Kongsfjorden; Kv: Kvaløya; LG: Lillefjord Granite; Lk: Laksefjorden; Ln: Langfjorden; LVF: Langfjorden–Vargsundet fault; Ma: Magerøya; MFC: Måsøy Fault Complex; NFC: Nysleppen Fault Complex; NP: Nordkinn Peninsula; Pf: Porsangerfjorden; PP: Porsanger Peninsula; RA: Ragnarokk Anticline; Rf: Rolvsøya fault; Rk: Reinøykalven; RG: Revsneshamn Granite; RLFC: Ringvassøya–Loppa Fault Complex; Rv: Rolvsøya; RW: Repparfjord–Komagfjord tectonic window; Sf: Syltefjorden; Sff: Syltefjordfjellet; SFZ: Senja Fracture Zone; SISZ: Sørøya–Ingøya shear zone; Sk: Stikonjargga Peninsula; sNB – southwesternmost Nordkapp basin; SP: Sværholt Peninsula; Sø: Sørøya; TFFC: Troms–Finnmark Fault Complex; TKFZ: Trollfjorden–Komagelva Fault Zone; Tn: Tanafjorden; TyB: Tiddlybanken Basin; VP: Varanger Peninsula; VVFC: Vestfjorden–Vanna Fault Complex. -Figure 2: Figure 2: Tectonostratigraphic chart and regional correlations in the study area. Abbreviations: E: Eidvågeid migmatite; L: Lillefjord Granite; R: Revsneshamn Granite; Ø: Øksfjord Gabbro. -Figure 3a-b: Figure 3. Overview of the (a) 2D and (b) 3D seismic reflection database uses in the present study. The maps also display the depth surfaces (in milliseconds TWT) of the main two Timanian thrusts mapped on the Finnmark Platform. -Figure 4a: Interpreted (up) and uninterpreted (down) seismic reflection data on the western Finnmark Platform. The location of the data is shown in Figure 7. ( a– c) NE–SW-trending seismic lines illustrating the moderately NNE-dipping geometry of the Sørøya–Ingøya shear zone. -Figure 4b: Interpreted (up) and uninterpreted (down) seismic reflection data on the western Finnmark Platform. The location of the data is shown in Figure 7. ( a– c) NE–SW-trending seismic lines illustrating the moderately NNE-dipping geometry of the Sørøya–Ingøya shear zone. -Figure 4c: Interpreted (up) and uninterpreted (down) seismic reflection data on the western Finnmark Platform. The location of the data is shown in Figure 7. ( a– c) NE–SW-trending seismic lines illustrating the moderately NNE-dipping geometry of the Sørøya–Ingøya shear zone. -Figure 4d: Interpreted (up) and uninterpreted (down) seismic reflection data on the western Finnmark Platform. ( d) NW–SE-trending seismic line showing major thickness variations of the Sørøya–Ingøya shear zone related to Devonian–Carboniferous core complex exhumation ( Koehl et al., 2018a) and to Caledonian reworking into NE–SW-striking folds. -Figure 5a: Zoom in interpreted (up) and uninterpreted (down) seismic data on the western Finnmark Platform. The location of the data is shown in Figure 6. ( a) Zoom in a NE–SW-trending seismic line showing numerous SSW-verging folds and associated brittle thrusts with top-SSW offsets within the western portion of the Sørøya–Ingøya shear zone. Triangular-shaped packages in the upper left corner are interpreted as deformed foreland basin deposits. -Figure 5b: Zoom in interpreted (up) and uninterpreted (down) seismic data on the western Finnmark Platform. ( b) Zoom in a NE–SW-trending seismic line showing sigmoidal packages of Z-shaped reflections respectively interpreted as antiformal thrust stacks and duplexes within the Sørøya–Ingøya shear zone. -Figure 5c: Zoom in interpreted (up) and uninterpreted (down) seismic data on the western Finnmark Platform. ( c) Zoom in a NE–SW-trending seismic line showing the eastern portion of the Sørøya–Ingøya shear zone, which bends back into a NNE-dipping orientation. Most folds within the shear zone display a vergence to the south-southwest indicating top-SSW movements. -Figure 5d: Zoom in interpreted (up) and uninterpreted (down) seismic data on the western Finnmark Platform. ( d) Zoom in a NW–SE-trending seismic line showing symmetric folds in shallow basement rocks in a major NE–SW-striking syncline possibly consisting of rocks equivalent to the Magerøy Nappe (MN; upper right corner), northwest-verging folds in the northwestern limb of the major syncline (left hand-side), and southeast-verging fold structures in the southeastern limb of the major syncline (lower right corner). -Figure 6a: Interpreted seismic reflection data on the eastern Finnmark Platform. The location of the data is shown in Figure 7. ( a) Intra-basement N–S- to NE–SW-striking Caledonian folds. The data show dominantly symmetric folds. Note that the URU reflection coincides with the Top-basement reflection here. -Figure 6b: Interpreted seismic reflection data on the eastern Finnmark Platform. ( b) NNE-dipping ductile shear zone consisting of planar mylonitic surfaces and SSW-verging folds indicating transport direction towards the south-southwest. Notice the mild reactivation of the shallow portion of the thrust by a late Paleozoic listric normal fault. A different color scheme was used to enhance the contrast and better highlight the structures described. -Figure 7: Map showing the depth surfaces (in milliseconds TWT) of the main two Timanian thrusts on the Finnmark Platform. Notice the correlation of major synforms and antiforms observed in the field onshore and on onshore–offshore magnetic data (plain and dashed pink lines) with folding of the Timanian thrusts on the Finnmark Platform in map view identified via seismic mapping (depth surfaces). The map includes major faults from Figure 1. For abbreviations, see Figure 1b. -Figure 8: Bathymetric and topographic data onshore Finnmark and nearshore fjords. The map shows major brittle faults, mafic dykes and sills, ductile fabrics (notably folded bedding surfaces), and glacial features. The location of seismic line BSS01-205 ( Figure 4c) is shown as a thick black line. The location of Figure9a and c–e is shown as black frames. -Figure 9a-c: Zoom in bathymetric data in (a) the Nordkinn Peninsula, (b) west of the Nordkinn Peninsula in 3D with view towards the northeast, (c) the Repparfjord–Komagfjord tectonic window. -Figure 9d-e: Zoom in bathymetric data in (d) southeast of Rolvsøya, and (e) Sørøya. -Figure 10a-b: ( a) Interpreted and ( b) uninterpreted magnetic data onshore–nearshore northern Norway. The location of Figure 11a–d is shown as black frames in ( b). -Figure 11a-d: Zoom in interpreted and uninterpreted tilt derivative data from Nasuti et al. (2015) in (a) Magerøya, (b) Porsangerfjorden and the Sværholt Peninsula, (c) the Sværholt Peninsula and Nordkinn Peninsula, and (d) in Syltefjorden and Syltefjordfjellet. -Figure 12a-b: ( a) Interpreted and ( b) uninterpreted tilt-derivative data onshore–nearshore northern Norway. The location of Figure 13a–c is shown as black frames in ( b). -Figure 13a-b: Zoom in interpreted and uninterpreted tilt derivative data from Nasuti et al. (2015) in (a) Sørøya, (b) Porsangerfjorden, the Sværholt Peninsula, and the Nordkinn Peninsula. -Figure 13c: Zoom in interpreted and uninterpreted tilt derivative data from Nasuti et al. (2015) in (c) the Digermulen Peninsula and the Varanger Peninsula. -Figure 14a-b: ( a) Interpreted and ( b) uninterpreted tilt-derivative data from Gernigon et al. (2014). The data show a correlation between fold structures in the field and on seismic data with magnetic anomalies both onshore northern Norway and on the Finnmark Platform offshore. -Figure 15: Interpreted (upper inset) and uninterpreted (lower inset) magnetic data from Gernigon et al. (2014) showing tens of kilometers wide anomalies interpreted as major folds. -Figure 16a-d: Summary model detailing the tectonic evolution of northern Norway and the southern Barents Sea from the latest Mesoproterozoic to the mid-Paleozoic. ( a) Deposition of sedimentary rocks of the Kalak Nappe Complex, possibly in a foreland basin associated with the Grenvillian–Sveconorwegian Orogeny at 1050–910 Ma and their partial migmatization and intrusion by tonalites at ca. 980 Ma. ( b) Normal faulting at 825–735 Ma and felsic magmatism at 840–828 Ma (granite and pegmatite, e.g., Lillefjord and Revsneshamn granites) in the Kalak Nappe Complex during the breakup of Rodinia. ( c) Top-SSW contraction during the Timanian Orogeny at 650–550 Ma and intrusion of the Seiland Igneous Province in a back-arc basin at 580–520 Ma. ( d) Top-southeast thrusting and reworking (folding) and partial reactivation of NNE-dipping Timanian thrusts during the Caledonian Orogeny in the early–mid Paleozoic. (2023-12-19)