Reconsidering paleozoic differences between the Jadar block and the Drina-Ivanjica unit

Abstract

The peculiar Jadar block has an intervening position separating the main Neotethyan West Vardar Zone (including ophiolites of late Jurassic age) and a passive margin lithospheric segment of the Apulia-Adria microplate referred to as the Drina-Ivanjica block. The review aimed to reassess the peri-Neotethyan paleogeography affecting the evolution of the Neotethyan oceanic crust ('single' v/5. 'multiple oceans' or single-v/5. two ophiolite belts) by juxtaposing the key differences of the late Variscan temporal evolution (controlling early Alpine paleogeography) between the Jadar block and Drina-Ivanjica crystalline segment. The study goal is the questionable paleogeographic affinity of the Jadar block. Contrary to the recent inferences attributing the Jadar block as a segment of the Apulia/Adria microplate, the study examine whether and how the Jadar late Paleozoic succession may allow for an alternative paleogeographic solution of the Neotethyan relevance. According to this comparison survey of these late Paleozoic successions, it appears that the Jadar block may carry a (tentative) evidence of the proximity of the western Paleotethys. The comparison yields a putative paleogeographic position associating the Jadar block with the post-Variscan European margin (not Apulia/Adria microplate). The proposed shift of the Permian-Triassic paleogeographic position of the Jadar block inevitably affects the obduction length i.e. questions a favourable protracted along strike-width of the overriding Neotethyan West Vardar ophiolites ('single ocean model'). AncTpaKT. JaflapcKH6 ; i o k ce Ha;ia3H H3Mehy raaBHor fle^a HeKaflauiHjer HeoTeTHca h ; i h 3anaflHe Bap^apcKe 30He h /],pHHCKO-HBaH>HHKe nacHBHe MaprHHe Koja npnnafla Any/bCK0-jaflpaHCK0j MHKpon^OHH. LJn/b 0 B 0r p a#a je KpaTKa peeBajiyau;Hja paHe <})a3e o 6 o ,o ,h h x fle^OBa HeoTeTHCKe n a^e o re o -rpa<j)CKe CHTyau,Hje Kpo3 ynopeflHy aHa;iH3y KacHona;ieo3ojcKe Tj. BapncijHjcKe eBO^yu;Hje noMeHyTa flBa 6;ioKa. KacHona;ieo3ojcKa <j)a3a je HMa;ia KAyHHH yrau;aj Ha paHO a;m cKy eBO^yu;Hjy HeKaflaiiiH>er HeoTeTHca. y HOBHjHM pa-flOBHMa Ja^apcKH 6 ; i o k je necTO npeflCTaB^eH Kao fleo AnyACKO-jaflpaHCKe MHKpon^one, a o k ce y 0B0j CTy^Hjn yKa3yje Ha M0ryhH0CT /ja OBaj 6 ; i o k Ha / Jp u H C K O -u e a tb U H K u 6sio k, nepMO-mpujacKa na/ieoseozpacpuja, nasieomemuc, Heomemuc. 0CH0By c b o j h x KapKaTepncTHKa MO>Ke 6 h t h (pe)HHTepnpeTHpaH Kao ce r-MeHT n0CT-BapHCu,H]CKe jy>KHoeBponcKe MaprHHe, Koja je 6HJia nofl yTHu,ajeM 3aTBapaHja najieoTeTH ca. HoBoyTBpl)eHa no3Hii,Hja JaflapcKor 6jioKa yTHne Ha r0pH>0jypcK0-fl0Hj0KpeflHy TeKTOHCKy HHTepnpeTau,Hjy 3anaflHOBapflapc k h x 0(J)H0^HTa Kao h npefl^o>KeHy fly>KHHy caMor 06,qyK0BaH>a npeKO aH3JIH3HpaHHX flOMHHaHTHO Iia./ie030jCKHX 6jIOKOBa. This research did not receive any specific grant from funding agencies in the public, com m ercial or not-forprofit sectors. Authors would like to thank anonym ous review ers for the suggested im provem ents o f the m anuscript content. We are also grateful to Dr T e a K o l a r -J u r k...

The role of the pre-Alpine polycrystalline basement in the paleogeographic configuration of multiple Neotethyan oceanic basins

“…Đoković, 1985), it appears that the Drina-Ivanjica block amalgamated with the southwestern Euroasia during the protracted Variscan shortening (Pamić & Jurković, 2002). The late Paleozoic Apulia/Adria occupied westernmost corner of Pangea (see discussion Maffione & van Hinsbergen, 2018;Avigad et al, 2016 and references therein;Spahić & Gaudenyi, 2020a;Fig. 4).…”

“…1b) or a Paleozoic entity drifted into the Vardar Zone during the Late Cretaceous (Karamata et al, 1994). Recently, a Paleotethyan involvement for the Jadar Block is suggested (Spahić & Gaudenyi, 2020a). The nearby Tisza Unit is the plate/ block is separated by the Vardar Zone s.s. from the Jadar (Fig.…”

“…The opening pattern of these landlocked oceans indicates the complex Permian-Triassic architecture of the intervening exotic Variscan peri-Gondwana terranes (including Adria as a Paleozoic continuation of the Austrian Alps; Pamić & Jurković, 2002). These poorly understood continental lithosphere fragments (e.g., Vavvasis et al, 2000;Spahić & Gaudenyi, 2020a, 2020b represent a segment of the remobilized basement of the Alpine orogen.…”

Looking for natural hydrogen in Albania and Kosova

“…The ophiolite in the north of Kosova is named Ibar. It was thrusted on the Jadar-Kopaonik block between Drina-Ivanjica and Serbo-Macedonian blocks (Toljić et al, 2019;Schmid et al, 2020;Spahic and Gaudenyi, 2020). It is mainly harzburgite and derived from an SSZ.…”