Emplacement of the Jurassic Mirdita ophiolites (southern Albania): evidence from associated clastic and carbonate sediments

Robertson, Alastair H. F.; Ionescu, Corina; Hoeck, Volker; Koller, Friedrich; Onuzi, Kujtim; Bucur, Ioan I.; Ghega, D.

doi:10.1007/s00531-010-0603-5

Cited by 13 publications

(5 citation statements)

References 36 publications

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“…3, Filipović et al, 2003;Robertson et al, 2010). This basement is covered by a Permian-Triassic mostly carbonatic succession (Krstić et al, 2005;Robertson et al, 2010).…”

Section: The Cer Mountainsmentioning

confidence: 99%

“…3, Filipović et al, 2003;Robertson et al, 2010). This basement is covered by a Permian-Triassic mostly carbonatic succession (Krstić et al, 2005;Robertson et al, 2010). This sequence is correlated along the strike of the Dinarides and along the Mid-Hungarian Shear Zone with the NW Sana-Una Unit and parauthochthonous unit of the Bukk Mountains of the NE Hungary (Karamata, 2000;Dimitrijević et al, 2003;Csontos and Vörös, 2004).…”

Section: The Cer Mountainsmentioning

confidence: 99%

See 1 more Smart Citation

The balance between orogenic building and subsequent extension during the Tertiary evolution of the NE Dinarides: Constraints from low-temperature thermochronology

Stojadinović

Maţenco

Andriessen

et al. 2013

Global and Planetary Change

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“…3, Filipović et al, 2003;Robertson et al, 2010). This basement is covered by a Permian-Triassic mostly carbonatic succession (Krstić et al, 2005;Robertson et al, 2010).…”

Section: The Cer Mountainsmentioning

confidence: 99%

Section: The Cer Mountainsmentioning

confidence: 99%

The balance between orogenic building and subsequent extension during the Tertiary evolution of the NE Dinarides: Constraints from low-temperature thermochronology

Stojadinović

Maţenco

Andriessen

et al. 2013

Global and Planetary Change

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“…For the latter, quantitative data on mineralized zones are generally confirmed from drill cores and mining production; no distinction is made between production and reserve data though. Mineralizations in association with slow-spreading ridge-derived ophiolites (i.e., Troodos and Mirdita; Moores and Vine, 1971;Hurst et al, 1987Hurst et al, , 1994Dilek and Eddy, 1992;Varga et al, 1999;Nicolas et al, 1999;Tremblay et al, 2009;Robertson et al, 2012) were preferred for the tonnage model. The full data sets are provided as a digital supplement to this paper in Supplementary Tables 1, 2 and 3.…”

Section: Datamentioning

confidence: 99%

Resource assessment of undiscovered seafloor massive sulfide deposits on an Arctic mid-ocean ridge: Application of grade and tonnage models

Juliani

Ellefmo

2018

Ore Geology Reviews

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Norway has started ongoing initiatives related to deep sea mining. These include the evaluation of mineral resources within its sovereign territorial waters on the deep ocean floor of the Arctic region, i.e. the Mohns Ridge (71-73°N).Among the variety of possible seabed resources, seafloor massive sulfides (SMS) attract particular interest. Owing to the significant development potential and the general lack of knowledge of the SMS deposits, the present study aims at assessing mineral resources (i.e., Cu, Zn, Au and Ag) from a number of undiscovered sulfide deposits with the help of a revised model for mafic-hosted volcanogenic massive sulfide (VMS) deposits that adequately corresponds to geological settings of slow-spreading ridges. Application of the model requires a priori knowledge of the seafloor terrain to depict favorable geologic environments for the occurrence of SMS deposits. In such context, estimates are conducted for the easily accessible volcanically active parts of the ridge where 11 undiscovered deposits are expected. In these areas, total metal endowments are calculated to be on average 447,000 tonnes using a Monte Carlo simulation that combines the probabilistic estimates of number of undiscovered deposits with the grade and tonnage models.

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“…This stratigraphic position and upwards gradation to the overlying El Mamey Group, is not compatible with a genesis for the Imbert Fm as sediments deposited in a trench or inner trench-slope basin, and then incorporated to a subduction complex (Bourgois et al, 1982;Pindell, 1985;Hernáiz Huerta et al, 2012). In this sense, the relationships between the Imbert Fm and the underlying SSZ ophiolite and overlying flysch deposits are similar to those of the La Picota Fm of eastern Cuba, the basal Great Valley Supergroup of the coastal California, the Saint-Daniel mélange in southern Quebec, the Ordovician South Mayo Trough of western Ireland and the olistostromes, mélanges and terrigenous sediments in Albania, overlying the corresponding Caribbean, Franciscan, Taconian/Grampian and Tethyan (Mirdita) ophiolites (Cobiella-Reguera, 2009;Dewey and Mange, 1999;Hitz and Wakabayashi, 2012;Robertson, 2002;Robertson et al, 2012;Ryan and Dewey, 2011;Schroetter et al, 2006). Therefore, there have been similar upper crustal processes during arc-continent collision in the past to the present.…”

Section: Tectono-sedimentary Evolutionmentioning

confidence: 89%

The Imbert Formation of northern Hispaniola: a tectono-sedimentary record of arc-continent collision and ophiolite emplacement in the northern Caribbean subduction-accretionary prism

Viruete¹,

Suárez-Rodríguez²,

Gabites³

et al. 2015

Preprint

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Abstract. In northern Hispaniola, the Imbert Formation (Fm) has been interpreted as an orogenic "mélange" originally deposited as trench-fill sediments, an accretionary (subduction) complex formed above a SW-dipping subduction zone, or the sedimentary result of the early oblique collision of the Caribbean plate with the Bahama Platform in the middle Eocene. However, new stratigraphical, structural, geochemical and geochronological data from northern Hispaniola indicate that the Imbert Fm constitutes a coarsening-upward stratigraphic sequence that records the transition of the sedimentation from a pre-collisional forearc to a syn-collisional piggy-back basin. This piggy-back basin was transported on top of the Puerto Plata ophiolitic complex slab and structurally underlying accreted units of the Rio San Juan complex, as it was emplaced onto the North America continental margin units. The Imbert Fm unconformably overlies different structural levels of the Caribbean subduction-accretionary prism, including a supra-subduction zone ophiolite, and consists of three laterally discontinuous units that record the exhumation of the underlying basement. The distal turbiditic lower unit includes the latest volcanic activity of the Caribbean island arc; the more proximal turbiditic intermediate unit is moderately affected by syn-sedimentary faulting; and the upper unit is a (caotic) olistostromic unit, composed of serpentinite-rich polymictic breccias, conglomerates and sandstones, strongly deformed by syn-sedimentary faulting, slumping and sliding processes. The Imbert Fm is followed by subsidence and turbiditic deposition of the overlying El Mamey Group. The 40Ar / 39Ar plagioclase plateau ages obtained in gabbroic rocks from the Puerto Plata ophiolitic complex indicate its exhumation at ∼ 45–40 Ma (lower-to-middle Eocene), contemporaneously to the sedimentation of the overlying Imbert Fm. These cooling ages imply the uplift to the surface and submarine erosion of the complex to be the source of the ophiolitic fragments in the Imbert Fm, during of shortly after the emplacement of the intra-oceanic Caribbean island-arc onto the continental margin.

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Emplacement of the Jurassic Mirdita ophiolites (southern Albania): evidence from associated clastic and carbonate sediments

Cited by 13 publications

References 36 publications

The balance between orogenic building and subsequent extension during the Tertiary evolution of the NE Dinarides: Constraints from low-temperature thermochronology

The balance between orogenic building and subsequent extension during the Tertiary evolution of the NE Dinarides: Constraints from low-temperature thermochronology

Resource assessment of undiscovered seafloor massive sulfide deposits on an Arctic mid-ocean ridge: Application of grade and tonnage models

The Imbert Formation of northern Hispaniola: a tectono-sedimentary record of arc-continent collision and ophiolite emplacement in the northern Caribbean subduction-accretionary prism

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